This roofing glossary explains the most important technical terms related to roofing in a clear and practical way. It is ideal for apprentices, trade professionals, and master craftsmen seeking in-depth knowledge, wanting to understand the connections, and looking to confidently classify technical terms.

cover flashing

The cover flashing reliably protects exposed component edges such as parapets, verges, wall tops, or dormers from rain, snow, and wind. Through the targeted drainage of water the cover flashing prevents moisture from penetrating the roof structure and makes a significant contribution to the roof's resistance to rain and durability.

A cover flashing is usually made of titanium zinc, aluminum, copper, or stainless steel. These materials are weather-resistant, durable and ideally suited for use on roofs throughout Europe. Depending on the roof shape, the sheet metal is individually bent and professionally installed. Particularly important are adequate overhangs, clean seaming techniques and sufficient provision for thermal expansion to prevent damage caused by temperature differences.

Whether for a new build or renovation, a properly installed cover flashing combines technical protection with high-quality appearance and is an integral part of professional roofing work.

timber framing

In carpentry, timber framing refers to the precise prefabrication of timber structures for roof structures and timber buildings . Components such as rafters, purlins, collar ties, or braces are cut to millimeter precision and fitted with traditional or modern timber joints. The aim of timber framing is to ensure a precise fit during assembly on the construction site, saving time and minimizing errors.

In Europe, timber framing is now often carried out mechanically in timber framing centers or carpentry businesses using CNC technology. This enables the highest dimensional accuracy, consistent quality, and efficient processing made of structural solid timber or glulam (BSH). At the same time, traditional manual timber framing remains important, for example in renovations or listed buildings.

Properly executed timber framing is crucial for the structural stability, durability, and load-bearing capacity of a roof structure . Especially for new builds, extensions or roof renovations professional timber framing forms the basis for the economical and proper implementation of modern timber structures.

flashing

The flashing ensures watertight transitions between roof surfaces and adjacent components. It is used wherever the roof meets walls, chimneys, dormers, roof windows or parapets is encountered. The purpose of the flashing is to to safely drain rainwater and the to prevent moisture from penetrating the roof structure.

A flashing is usually made of titanium zinc, aluminum, copper, or stainless steel. These materials are durable, corrosion-resistant and ideally suited to Europe's climatic conditions. Depending on the roof shape, the sheet metal is used as wall flashing, chimney flashing, or roof window flashing . Professional installation with correct overlap and clean seaming and with sufficient allowance for expansion is crucial.

A professionally executed flashing increases weather resistance, service life, and value retentionof pitched and flat roofs sustainably.

Parapet

The parapet is a horizontal edge termination of flat roofs and plays a central role in modern roofing and sheet metal work. It projects beyond the roof surface and serves both the visual design and the structural protection of the roof construction. Parapets are particularly widespread on flat roofs of residential, commercial, and industrial buildings in Europe.

A professionally constructed parapet protects the roof waterproofing from UV radiation, wind, and mechanical loads. Correct waterproofing in the parapet area is crucial, usually combined with a parapet capping made of titanium zinc, aluminum, or stainless steel. This safely drains rainwater and prevents moisture damage to the masonry and insulation. Whether for new construction or renovation: The parapet makes a major contribution to the weather resistance, service life, and value of a flat roof and requires precise workmanship by experienced roofers and sheet metal workers.

Professional tools for parapet flashing

As parapet cappings are fully visible, the seams must be closed completely free of scratches and dents.

• Scratch-free seaming: For clean final closing of wall and parapet cappings, sheet metal workers rely on the adjustable FALZSID Attika Falzschließer Vario 3.0.

• Sheet metal cutting: Long, straight cuts in the capping sheets can be made directly at the flat roof edge with the WUKO 1010 roller sheet metal shear or the WUKO Cutter 1070, without chips or distortion.

• Fastener installation: To install the fastening brackets in confined installation situations on the parapet masonry, professionals rely on the compact KIRSCHEN short cold chisel with leather holster.

Video: Correctly installed parapet capping - DDH Roofing Knowledge | dach-holz.tv

Roof-over-rafter insulation

Roof-over-rafter insulation is a particularly efficient form of thermal insulation for pitched roofs and is regarded as high-quality solution in modern roofing. The insulation material is installed above the rafters, so that a continuous layer of insulation without thermal bridges This construction method provides excellent energy efficiency and a pleasant indoor climate - ideal for new buildings and roof renovations.

The materials typically used are pressure-resistant insulation boards made of wood fiber, PUR, PIR, or mineral wool. Roof insulation above the rafters not only improves thermal and heat protection but also it also preserves the visible wood look indoors. Combined with a professionally installed underlay membrane and airtight layer, it meets the current energy requirements of the German Building Energy Act (GEG).

Due to its high insulation performance roof insulation improves living comfort, property value, and the sustainability of a roof and is a future-proof insulation solution.

Concrete roof tile

The concrete roof tile is a widely used roofing material in modern roofing and particularly popular for pitched roofs in Germany. It is made from a a mixture of cement, sand, water, and color pigments manufactured and impresses with high stability, dimensional accuracy, and cost-effectiveness.Thanks to modern coating technologies, concrete roof tiles are durable and colorfast and resistant to frost, UV radiation, and weathering.

Concrete roof tiles are suitable for various roof pitches and are available in numerous shapes, colors, and surface finishes. They offer high rain protection and can be installed efficiently, which makes them attractive for both new buildings and roof renovations. Due to their higher dead weight, they also contribute to good wind protection at.

A professionally installed concrete roof tile provides a robust, low-maintenance, and durable roof, the functionality and modern design combines optimally.

Plain tile

The plain tile is a classic clay roof tile and is one of the roofing methods with the longest traditions in the roofing trade. Especially for historic buildings, older buildings, and listed roofs in Germany, plain tiles are frequently used. Their characteristic flat shape with a rounded or segmented edge creates a particularly elegant and uniform roof appearance creates.

Plain tiles are installed in double-lap or crown covering are installed and are suitable especially for steeper roof pitches. The multi-layer installation creates an high resistance to driving rain, even during heavy rainfall. Made from fired clay , plain tiles are durable, colorfast, and vapor-permeable.

Despite modern roofing materials, the plain tile remains a popular solution, when craftsmanship, tradition, and high-quality architecture take center stage - ideal for stylish roof renovations with regional character.

Bitumen membrane

The bitumen membrane is a proven waterproofing material in roofing and is mainly used for flat roofs, garages, balconies and terraces used. It serves as reliable waterproofing against rain, snow and standing water and have been the standard in structural waterproofing in Europe for decades.

Bitumen membranes consist of a carrier layer made of polyester or glass fleece , which is coated with modified bitumen. Depending on the design, they are welded, bonded or mechanically fastened. Modern polymer-bitumen membranes are characterized by high tensile strength, flexibility and durability and remain dimensionally stable even with significant temperature fluctuations.

Especially in multi-layer waterproofing systems, bitumen membranes offer high resistance to rain and loads. When professionally installed, they comply with current technical rules and provide durable, economical and reliable waterproofing of flat roof structures in new construction and renovation projects.

glulam (glued laminated timber)

Glulam (BSH) is a high-quality engineered wood product and plays a central role in modern carpentry and timber construction. It consists of several dried wood lamellas, the glued parallel to the grain are achieved. Through this construction, glulam achieves very high load-bearing capacity, dimensional stability and dimensional accuracy, significantly higher than that of solid wood. In Germany, glulam is mainly for purlins, beams, rafters and long-span roof structures used.

A major advantage of glulam is its low cracking as well as high resistance against warping and shrinkage. This makes it ideal for exposed structures in the roof structure. Glulam is also sustainable, as it is made from the renewable raw material wood and meets current building standards and requirements.

Whether for new construction, extensions or roof renovations, glulam enables economical, durable and demanding solutions in modern timber and roofing construction.

Roof build-up

The roof build-up describes the Layer sequence of a roof and is is crucial for the function, energy efficiency and longevity of a roof structure. A professionally planned roof build-up reliably protects the building against weather, moisture, heat loss and noise. In Germany, roof construction is governed by the applicable standards and the Building Energy Act (GEG).

Typical components of a roof build-up are the roof covering, battens and counter-battens, an underlay or sarking membrane, the Thermal insulation as well as Vapour control layer or vapour barrier on the inside. Depending on the roof shape - pitched or flat - the exact construction differs. An airtight layer is particularly important, to prevent moisture damage and thermal bridges.

A professionally constructed roof build-up improves living comfort, lowers energy costs, and increases the property's value. Whether for a new build or renovation: The right roof structure is the foundation of a permanently safe and efficient roofing system.

roof area

The roof area refers to the entire sloped or flat area of a roof and is a key measurement in the roofing trade. It forms the basis for planning the roof covering, insulation, waterproofing, and drainage. Anyone wishing to calculate the roof area needs accurate measurements, the roof shape, and the roof pitch. In Germany, correct calculation particularly important for material estimation, cost calculation, and structural planning.

The roof area calculation varies considerably depending on the roof shape - such as a gable roof, hip roof, or flat roof. For pitched roofs, the actual area including the slope is used, not the building's footprint. Precisely determining the roof area prevents material shortages, overordering, and planning errors.

Whether for a new build, renovation, or energy consultation: The exact roof area is crucial for cost-effectiveness, resistance to rain, and energy efficiency of a roof and is part of professional roof planning.

Video: Simple calculation of roof areas

roof covering

The roof covering is the outer protective layer of a roof and has a central function in the roofing trade. It reliably protects the building from rain, snow, wind, and UV radiation and also shapes the appearance of the house. In Germany, different materials are used depending on the roof shape and regional requirements, including roof tiles, concrete roof tiles, slate, metal, or roof panels.

The choice of suitable roof covering depends on the roof pitch, structural requirements, weather conditions, and design specifications. Professional installation ensures high resistance to rain, wind uplift protection, and a long roof service life. Additional components such as battens, underlay membranes, and junctions are essential for overall functionality.

Whether for a new build or renovation: A professionally installed roof covering increases living comfort, preserves the building's value, and improves its energy efficiency and is a key quality factor in modern roof constructions.

roof skin

The roof skin refers to the outermost, weather-exposed layer of a roof and is a central element of the roofing trade. It reliably protects the building from precipitation, wind, snow, and UV radiationand plays a major role in ensuring the roof's resistance to rain. In Germany, the roof skin consists, depending on the roof shape, roof tiles, concrete roof tiles, slate, metal sheets, or waterproofing systems.

For pitched roofs, the roof skin generally comprises roof covering including accessories such as ridges, verges, and junctions. For flat roofs, they consist of single- or multi-layer waterproofing membranes. A professionally installed roof covering is essential for preventing moisture damage, heat loss, and structural damage.

New build or roof renovation - A durable roof covering improves weather protection, energy efficiency, and the value retention of a building and is the basis for a permanently reliable roof system.

Roof pitch

The roof pitch describes the angle of inclination of a roof surface and is a decisive factor in roofing and planning. It is specified i in degrees or percent specified primarily and influences the choice of materials, protection against rain, and drainage of a roof. In Germany, manufacturers specify a minimum roof pitch for every roofing system, which must be strictly observed.

The lower the roof pitch, the greater the requirements for underlay, sealing, and additional measures . Steep roofs drain rain and snow particularly effectively, while roofs with a low pitch must be carefully planned. The roof pitch also affects the structural integrity, appearance, and use of the attic.

Whether for a new build or roof renovation: A correctly planned roof pitch for that ensures lasting protection against rain, a long service life a central element of professional roof planning.

Gutter

The gutter is a central component of roof drainage and ensures that rainwater is drained from the roof in a controlled manner. It protects the facade, masonry, and foundation from moisture damage and is therefore indispensable for a building's longevity. In Germany, gutters are made of titanium zinc, copper, aluminum, or plastic are used.

Depending on the roof shape, a distinction is made between semicircular gutters, box gutters, and special shapes.The correct gutter size, sufficient slope, and professional fastening with gutter brackets are crucial for proper functioning. Downpipes safely channel the water into the sewer system or for infiltration.

A correctly installed gutter increases protection against rain, safeguards the building structure, and reduces maintenance requirements. Whether for a new build or renovation: Professional planning and installation of the gutter is an important part of modern roofing and sheet-metal work.

Concrete roof tile

Concrete roof tiles are a proven roofing material in the roofing trade and are used primarily on steep-pitched roofs in Germany. Unlike clay tiles, the concrete roof tile consists of concrete and impresses with high dimensional stability, load-bearing capacity, and cost-effectiveness. Modern concrete roof tiles feature durable coatings that protect them from frost, UV radiation, and weathering.

Concrete roof tiles come in wide range of shapes, colors, and surfaces available and can be installed efficiently. They offer a high rain protection and are suitable for different roof pitches. Due to their greater dead weight, roof tiles also provide improved wind protection which makes them particularly attractive for exposed locations.

Regardless of the roofing project, a professionally laid roof tile provides a long-lasting, low-maintenance, and visually appealing roof, that combines functionality and modern design.

Roof structure

The roof structure forms the load-bearing framework of a roof and is a central element in carpentry. It consists of components such as rafters, purlins, collar beams and braces and safely transfers the loads from the roof covering, snow, and wind into the building structure. In Germany, roof structures are predominantly made from structural solid timber (KVH) or glued laminated timber (BSH).

Depending on the shape of the building, different types of roof structures are used, such as rafter roof, purlin roof, or collar-beam roof are used. Precise planning and a properly integrated connection are crucial for structural stability, durability, and dimensional accuracy. The roof structure also influences how the roof space is used, for example for living purposes or technical equipment.

A professionally constructed roof structure is the foundation for a permanently stable, safe, and energy-efficient roofing system.

Vapor barrier

The vapor barrier is an essential component of a modern roof assembly and protects the roof structure from moisture from inside the building. It is installed on the interior side of the thermal insulation and prevents water vapor from penetrating the insulation or roof structure . In Germany, the proper use of a vapor barrier is particularly important to prevent structural damage, mold growth, and heat loss.

Vapor barriers usually consist of plastic membranes or aluminum composite membranes with very high diffusion resistance. Airtight installation, including of properly sealed joints, connections, and penetrations . Even the smallest leaks can significantly impair its effectiveness.

Whether pitched or flat: A correctly installed vapor barrier increases the energy efficiency, living comfort, and service life of the entire roof structure and is a key component of professional roofing and renovation work.

Expansion compensation

Expansion compensation is an essential part of roofing and sheet metal work, especially for metalwork on roofs. Metals such as titanium zinc, aluminum, or copper change their length due to temperature differences. Without properly executed expansion compensation, this can lead to material stresses, deformation, or leaks are used.

Expansion compensation is achieved through sliding and fixed points, expansion joints, and special fastening systems. Especially with gutters, flashing connections, parapet caps, or standing seam roofs this measure is essential. In Germany, the requirements for expansion compensation are clearly defined in the technical rules of the roofing and sheet metalworking trades.

A correctly planned expansion compensation system ensures lasting functionality, weather resistance and durability of the metal components. It prevents damage caused by temperature fluctuations and makes a significant contribution to the quality and safety of modern roof structures.

Double-lock standing seam

The double-lock standing seam is a high-quality seaming technique used in sheet metalworking and roofing, primarily for metal roofing made of titanium zinc, aluminum or copper. In this process, two metal sheets are raised vertically and folded together twice, creating an especially watertight and durable connection. This technique is suitable for low-pitched roofs and demanding architecture throughout Germany.

Whether for a residential building, commercial construction or renovation: The double-lock standing seam represents craftsmanship, lasting quality and modern metal roof design.

Structure and manual fabrication

The professional fabrication of a double-lock standing seam is carried out in practice in two coordinated phases:

1. The angle seam (phase 1): The vertically raised sheet edges of the panels are bent over at a right angle and folded once. This so-called angle seam is used primarily on steep walls and facade cladding.

2. The double-lock standing seam (phase 2): To ensure maximum watertightness across the roof surface, the angle seam is folded down another 90°. Only this double folding completely closes the connection and gives it its capillary-breaking properties.

Important in practice: The double-lock standing seam allows for controlled expansion compensation because the metal sheets are fastened to allow movement. Since metals expand and contract with temperature changes, this sliding fastening (e.g., with the MASC fixed-point clip set) is essential. This sustainably prevents stress and material damage caused by temperature changes.

The key advantages on the construction site

• Very high weather resistance: The system offers excellent protection against rain, even in heavy rain and wind, as no water can overcome the double seam edges.

• Low minimum roof pitch: While conventional roof tiles often require steeper pitches, a double standing seam can already be made weatherproof from a roof pitch of 3° (with additional measures such as seam sealing tapes) or 7°.

• Timeless aesthetics: In addition to its uncompromising technical functionality, the double standing seam impresses with its clear, modern appearance, which fits perfectly into contemporary architecture.

Which tool do you need for the double standing seam?

To work efficiently by the meter on the roof and deliver flawless results, modern roofing relies on specialized profiling and seaming tools. Today, the traditional, laborious manual seaming with a seaming iron is replaced by highly efficient systems on long runs.

• For manual and mobile use: When flexibility and speed directly on-site are essential, tool sets such as the BUSCHMANN TOOLS Falz Bender Set (for the precise production of upper and lower seams) or the coordinated WUKO Bender Sets (e.g. 2204|4040) are the absolute benchmark for every sheet-metal worker.

• For material-friendly seaming: On color-coated sheets or sensitive visible surfaces, seaming tools with PVC jaws (such as the FALZSID Winkeldoppelfalzer PVC or the FREUND Eaves Seamer with PVC Jaws) prevent unsightly scratches and pressure marks.

• For maximum time savings on large surfaces: Anyone looking to save muscle power in the tough day-to-day work on construction sites can use semiautomatic or electric seaming tools (such as the WUKO Sprinter or the BUSCHMANN TOOLS Double Falz Seamer), which completely close the double standing seam in a single operation.

A tip from Roofify: Don't compromise on your projects. You can find the right professional roofing and plumbing tools for perfect standing seam projects directly in our shop. Quality. Reliability. Craftsmanship.

Seaming technology

Seaming technology is a central process in the plumbing and roofing trades and is used for a secure connection between metal sheets on the roof. The sheet metal edges are the sheet metal edges are mechanically folded over and seamed together, to create weatherproof, durable, and flexible connections. In Europe, seaming technology is used primarily for metal roofs, standing seam roofing, gutters and flashing pieces.

Depending on the requirements, a distinction is made between single lock seam, double standing seam, or angle seam. These techniques not only enable a watertight connection but also controlled expansion compensation during temperature changes . This is particularly important for metals such as titanium zinc, aluminum, or copper.

Professionally executed seaming technology increases the weather resistance, resistance to driving rain, and the service life of roof and façade components. It combines traditional craftsmanship with modern technology and is a mark of quality in professional metalwork on roofs.

👉🏻 At Roofify, you will also find the right Seam closers for your seaming technique!

Interlocking tiles

Interlocking tiles are one of the most popular types of roof tiles in modern roof construction in Germany – especially in North Rhine-Westphalia. Through their side and top interlocks the tiles interlock precisely and provide high resistance to driving rain, even in strong winds or with a low roof pitch.

Compared with traditional plain tiles, interlocking tiles allow for faster installation and lower material consumption, which makes them particularly economical. They are usually made of clay or concrete and impress with their durability and high frost resistance and a modern appearance.

Interlocking tiles are ideal for roof renovations and new builds because they compensate for dimensional tolerances and create a create a clean roof surface. Thanks to numerous colors, shapes, and surfaces they can be ideally adapted to regional architectural styles. Roofing companies therefore specifically use interlocking tiles for energy-efficient, durable, and visually appealing roofs one.

Downpipe

A downpipe is a central element of roof drainage and ensure that rainwater is safely drained from the gutter to the sewer system or cistern. High-quality downpipes protect façades, masonry, and foundations reliably against moisture damage. In roofing Depending on the requirements, downpipes made of zinc, copper, aluminum, or plastic are used. Especially in the European climate with frequent heavy rainfall events, a professionally dimensioned and installed downpipe solution is crucial.

Modern downpipe systems impress with their high durability, corrosion resistance, and clean visual integration into the building envelope. In Germany, downpipes are often combined with leaf guards, inspection openings, or rainwater harvesting. For roofers and builders, the following applies: The correct downpipe size, standardized installation, and regular maintenance are essential for a permanently functioning roof drainage system. This keeps the building protected over the long term - technically efficient and visually appealing.

Moisture protection

Moisture protection is a decisive factor in the longevity of buildings and plays a central role in modern construction and roofing. It protects roof structures, façades, and masonry reliably against penetrating moisture, mold growth, and heat loss . Especially in Europe and particularly in Germany, frequent rainfall and changing weather conditions create high requirements for professional moisture protection solutions.

These include, among other things, vapor barriers, underlay membranes, waterproofing films, and bitumen membranes,that must be coordinated with one another professionally. Effective moisture protection not only improves the building fabric but also increases energy efficiency and living comfort. For roofers and builders: Only standards-compliant planning and clean execution ensure lasting protection against moisture damage. Modern moisture protection systems now combine technical safety with sustainable materials - for buildings that remain dry and retain their value over the long term.

ridge purlin

The ridge purlin is a load-bearing component in the traditional roof structure and forms the central support line at the roof ridge. It transfers the loads from the rafters and ensures the stability, dimensional accuracy, and safety of the entire roof structure. Especially in timber construction and for pitched roofs, a correctly dimensioned ridge purlin is indispensable. In Germany, high structural and building-physics requirements, that must be taken into account during planning and construction.

Ridge purlins generally consist of structural solid timber (KVH), glued laminated timber (GLT), or steel and are calculated according to current DIN standards. Professional installation is crucial to prevent settlement, cracking, or deflection. For roofers, carpenters, and builders, one thing is clear: A professionally constructed ridge purlin forms the basis for a durable, safe, and cost-effective roof structure.

flat roof

The flat roof is a modern and versatile roof shape, both in widespread in both residential and commercial construction is. Characteristic is the low roof pitch, which makes a professional waterproofing and drainage particularly important. In Europe and especially in Germany, professional heavy rain, temperature fluctuations, and snow loads place high demands on the flat-roof structure.

Proven waterproofing systems made from bitumen membranes, plastic or elastomer membranes , often combined with thermal insulation and a vapor barrier . A professionally constructed flat roof offers numerous advantages: It enables green roofs, photovoltaic systems, or additional usable areas. For roofers and builders, the rule is: Only standards-compliant planning, high-quality materials and regular maintenance provide lasting protection against moisture damage. Modern flat roofs now combine functionality, energy efficiency, and contemporary architecture.

👉🏻 Roofify offers a wide range of tools for proper flat-roof waterproofing !

Video: Waterproofing a flat roof: Installing tapered insulation, laying a torch-on membrane, welding the cap sheet with a torch

wall plate

The wall plate is a load-bearing component of the roof structure and is part of the purlin roof system in carpentry. It is located at the lower end of the roof structure and has the task of transferring the loads from rafters, roof covering, and snow and wind safely into the to the walls or supports below. In Europe, the wall plate is a key component of modern roof structures.

The wall plate is usually made of Construction-grade solid wood (KVH) or glulam (glued laminated timber) . Precise alignment and professional fastening are crucial for the stability and durability of the roof structure. The wall plate is often supported on a ring beam or sill and rigidly connected.

Whether for a new build, an extension, or roof renovation, a correctly planned and installed wall plate ensures stable load transfer, high level of safety and a durable roof structure.

dormer

The dormer is a roof structure that projects from the sloping roof surface and creates additional living space, light, and headroom in the attic. It is an important design element in roofing and carpentry and is frequently used in residential buildings throughout Europe. Typical dormer types include shed dormer, gable dormer, hip dormer, and eyebrow dormer.

In addition to enhancing the appearance, a dormer improves the usability of the attic considerably. Its professional installation requires precise planning of the roof structure, waterproofing , roof covering, and connections.Especially important are watertight transitions to the roof surface to prevent moisture damage.

A professionally planned dormer increases living comfort, daylight yield, and property value . It combines functionality with architectural appeal and is a key element of modern roof design.

green roof

The green roof is a sustainable roofing solution and is becoming increasingly important in modern German roofing. It is a a roof covered with vegetation and on both on flat and low-pitched roofs can be used. A distinction is made between extensive and intensive green roofs , depending on the design, maintenance requirements, and usability.

A professionally installed green roof improves thermal and sound insulation, protects the roof waterproofing from UV radiation and extends their service life significantly. It also contributes to rainwater retention , improving the microclimate, and promoting biodiversity The roof structure consists of several layers, including waterproofing, root protection, drainage, substrate, and vegetation.

Whether new construction or renovation: A green roof increases a building's energy efficiency, sustainability, and value and is supported in many places supported by municipal funding programs.

Semicircular gutter

The semicircular gutter is the most commonly used form of Gutter in the roofing and sheet metal trades. Due to its semicircular cross-section, it enables even water drainage and ensures reliable roof drainage. It is widely used for both single-family homes and multi-family and commercial buildings.

Semicircular gutters are made of titanium zinc, copper, aluminum, or plastic manufactured and available in various nominal widths. Crucial to their function are correct sizing, numerous slopes, and secure fastening with gutter brackets. Thanks to its shape, the semicircular gutter is less susceptible to dirt and is easy to clean.

A professionally installed semicircular gutter reliably protects façades, masonry, and foundations protects against moisture damage and is a proven, durable system for modern roof drainage.

👉🏻 Gutter iron bending pliers you can also find in the Roofing shop

Wood protection

Wood protection is a key factor in preserving the value of wooden structures indoors and outdoors . Whether roof framing, façade, terrace, or carport: Professional wood protection reliably protects against moisture, UV radiation, fungal infestation, and wood pests. In Europe - especially in regions exposed to severe weather - professional wood protection is essential to prevent damage and costly renovations.

A distinction is made between structural, chemical, and physical wood protection. While structural measures such as adequate ventilation and distance from the ground which form the basis, modern wood preservatives provide additional long-term protection . Environmentally friendly, low-solvent products today offer high effectiveness with maximum sustainability.

For roofing and timber construction projects, the rule is: Only properly protected wood remains permanently stable, safe, and visually appealing  - for long-lasting quality and maximum safety.

Collar beam

Collar beams are a central component in traditional roof framing and ensure Stability and load distributionin the sloping roof. They connect opposing pairs of rafters horizontally and reduce its deflection. Especially with larger roof spans, collar ties are essential to to permanently ensure the load-bearing capacity and dimensional stability of the roof structure.

In modern timber construction, collar ties are often made from solid structural timber or glulam manufactured and precisely dimensioned according to structural specifications. In Europe, they are a proven element in residential buildings, halls, and renovation projects in the roof area.

Properly planned and professionally installed collar ties also enable better use of space in the attic and extend the service life of the entire roof frame. For roofers and carpenters, the principle is: collar ties provide safety, efficiency, and sustainable construction quality.

valley

The valley is a particularly important area in roof construction and forms there, where two sloping roof surfaces meet on the inside. As a collection point for rainwater and meltwater the roof valley must be completely watertight and professionally constructed to reliably prevent moisture damage. Especially during heavy rainfall, which is common in Europe, the quality of the valley construction plays a decisive role.

In high-quality valley seals, metal valleys made of zinc or aluminum, and precisely cut roof tiles are used in practice . Adequate overlap and correct water drainage are essential. Particularly during renovations, it becomes clear that:  Leaking valleys are among the most common causes of damage to roofs.

Professionally constructed valleys extend the service life of the entire roof structure, improve drainage and ensure lasting safety. For roofers the valley is a genuine hallmark of professional craftsmanship.

Construction-grade solid wood (KVH)

Construction-grade solid wood (KVH) is industrially manufactured, technically dried solid wood and is one of the most important building materials in modern timber construction. It is predominantly made from spruce, fir, or pine and is characterized by its high dimensional accuracy and dimensional stability and load-bearing capacity out. Due to its defined moisture content of approximately 15%, KVH is particularly resistant to cracking and minimizing the risk of warping.

KVH is used primarily in roof framing, timber-frame construction, in ceiling and wall structures as well as in engineered timber construction used. Thanks to large spans can be achieved without difficulty thanks to finger-jointed length connections.In addition, construction-grade solid wood is available in visible (KVH Si) and non-visible quality (KVH NSi).

Another advantage: KVH is manufactured according to strict standards (e.g. DIN EN 15497) and is sustainable and environmentally friendly option. For construction projects in the German roofing trade, KVH offers a cost-effective, durable, and structurally safe solution.

counter-batten

The counter-battens are a an essential component of a modern pitched-roof construction and plays a central role in the the roof's functionality and longevity . It is strictly in line with the roof pitch mounted on the rafters and, together with the supporting battens, forms the basis for the roof covering. The main function of the counter-battening is the formation of the ventilation layer, through which moisture is reliably removed.

The counter-battening creates a defined ventilation cross-section, of the reduces condensation and the service life of the roof covering, underlay membrane, and timber components to be significantly increased. It also enables secure fastening of the roof battens and improves water drainage beneath the roof covering.

In German roofing, counter-battens are usually made of impregnated softwood manufactured and processed in accordance with DIN standards. When properly executed, the counter-battening makes a decisive contribution to thermal protection and moisture protection,and lasting roof quality at.

Synthetic roofing membrane

The synthetic roofing membrane is a modern, high-performance solution for roof waterproofing and is primarily flat roofs, industrial and commercial roofs, as well as on balconies and terraces used. Made from high-quality plastics such as PVC, FPO, or TPO, it impresses with high weather resistance and UV stability, and a long service life.

Thanks to their low weight the synthetic roofing membrane can be installed quickly and economically. The membranes are mechanically fastened and loose-laid, or fully adhered and hot-air welded , creating permanently watertight seams. This ensures maximum protection against moisture and penetrating water.

Another advantage is the synthetic roofing membrane's high flexibility, even during major temperature fluctuations - ideal for roofing work throughout Europe. In addition, many systems are root-resistant, recyclable and comply with current DIN standards and flat-roof guidelines. This makes the synthetic roofing membrane a a future-proof waterproofing solution. for professional roofing projects.

Battening

The battening is a fundamental element in pitched-roof construction and forms the a load-bearing substructure for roof tiles, concrete roof tiles, or slate. It consists of horizontally installed roof battens, which are fastened to the counter-battens and safely transfer the loads of the roof covering to the rafters. Correct sizing and the exact batten spacing is crucial for the roof's stability and longevity.

In professional roofing, standard-compliant roof battens made of dried softwood are used,usually graded according to DIN EN 14081. Properly executed battening ensures secure fastening of the roof covering and ensure even load distribution even load distribution

In German roofing in particular, the roof battens are a key quality factor. Precisely installed, they support the Ventilation, improves moisture protection and forms the basis for a a permanently reliable and energy-efficient roofing system.

Airtightness

Airtightness is a central quality feature in modern home and roof construction and is crucial for energy efficiency, living comfort, and freedom from building damage. An airtight building envelope prevents uncontrolled airflows, heat loss and the moisture penetration in the structure. Proper execution plays a key role, especially in pitched roofs, renovations, and timber construction.

The materials used include special vapor barriers, airtightness membranes, adhesive tapes and sealing compounds, reliably seal connections and penetrations. A Poor airtightness can lead to condensation, mold, and higher heating costs. The Blower Door Test serves as a recognized method for checking workmanship quality.

In German roofing, airtightness is firmly established in standards such as German Building Energy Act (GEG) and the DIN 4108 When implemented professionally, it ensures durable structures, sustainable energy savingsand a a healthy indoor climate.

Soldering

Soldering is a a key joining technique , particularly in sheet metal work and plumbing. Soft and hard soldering are used to create metals such as zinc, copper, or titanium zinc to be permanently and watertight connected – ideal for gutters, downpipes, flashings, and connections. Especially on pitched roofs, professionally executed soldering ensures lasting watertight seal, high load-bearing capacity and a a clean appearance.

In modern roof construction in Europe, especially in urban areas, precise soldering is essential to to reliably withstand weather conditions such as rain, frost, and heat. The key factors are correct soldering temperature, clean surfaces and the suitable fluxes to prevent corrosion. Professional soldering saves time, reduced maintenance costs and increases service life of the roof structure. For roofing companies, soldering therefore stands for quality, safety, and the highest level of craftsmanship.

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Video: SOLDERING A GUTTER

Metal roof

A metal roof represents durability, low weight, and high weather resistance in modern roofing. Materials such as titanium zinc, aluminum, copper, or steel are ideal for residential buildings, commercial buildings, and renovation projects. Especially in the German climate, a metal roof provides optimal protection against rain, snow, storms, and UV radiation. Systems such as standing seam, double standing seam, or trapezoidal profiles allow metal roofs to be installed precisely and with virtually no maintenance.

Metal roofs are in demand in urban areas because they adapt perfectly to modern architecture while also being sustainable. Metal roofs are 100% recyclable, energy-efficient, and ideal for photovoltaic systems. Thanks to short installation times and long service life, metal roofing appeals to both property owners and roofing companies. It combines technical precision, cost-effectiveness, and contemporary design into a future-proof roofing solution.

Intermediate purlin

The intermediate purlin is a central component of the traditional purlin roof and performs a load-bearing function in the roof frame. It runs horizontally along the length of the roof and lies between the ridge purlin and wall plate. Its main purpose is to support the rafters and distribute the roof loads evenly to the underlying supports, posts, or load-bearing walls.

Especially in residential construction, industrial construction, and roof renovations in Europe, the intermediate purlin is frequently used because it enables larger spans and reduces the structural load on the roof frame. It is usually made of structural solid timber (KVH), glued laminated timber (GLT), or steel, depending on structural calculations and building specifications.

A properly dimensioned and installed purlin ensures stability, longevity, and efficient load transfer for the entire roof - a decisive factor for every durable and safe roofing system.

Nailing technology

Nailing technology is a fundamental fastening method in roofing for timber and roof components. It is used primarily in roof frames, battens, sheathing, and timber joints. The correct type of nail, the proper driving depth, and the appropriate angle are crucial to a roof's stability. Professional roofing uses galvanized or stainless steel nails to prevent corrosion and material fatigue.

Especially in the European climate, nailing technology must withstand high demands from wind loads, snow, and moisture. Modern roofing companies rely on pneumatic or battery-powered nailing systems, which enable precise and time-saving work. Properly executed nailing technology increases the load-bearing capacity, safety, and service life of the entire roof structure. It represents efficient work, high-quality craftsmanship, and standards-compliant execution in modern roofing.

Verge

In roofing, the verge refers to the side finish of the roof along the gable edges of a building. It reliably protects the roof structure from wind, driving rain, and moisture, making it a crucial detail for the roof's longevity. Depending on the roof type, verge tiles, verge flashings made of aluminum or titanium zinc, and custom-made sheet metal solutions are used.

In the European climate, particularly in storm-prone regions, the verge must be professionally secured and made wind-tight. Precise installation prevents water ingress and helps prevent damage to insulation and the substructure. Modern verge solutions combine technical functionality with a clean appearance and adapt to various roof shapes. For roofing companies, the verge represents craftsmanship, safety, and lasting weather protection – a small component with a major impact on every roof.

Tools for verge work

When installing verge flashings or preparing the verge sheathing, millimeter-precise cuts and clean bends are essential.

• Safety on pitched roofs: To work safely in the fall-hazard area of the gable, collective fall protection such as the ABS SAFETY - Mobile Guard Pro for pitched roofs | verge is indispensable.

• Sheathing and fastening: When installing the sheathing, modern devices such as the HiKOKI 18V cordless strip nailer or the PREBENA hybrid nailer keep the workflow moving at the necessary pace.

• On-site sheet metal bending: To close the standing seams between the flashing and the edge strip at the roof edge, the FALZSID Vario verge closer is the perfect time-saving solution.

Verge flashing

An verge flashing is an important finish at the side edge of the roof (verge) and reliably protects the roof structure and façade from wind, driving rain, and suction forces. It is usually made of aluminum, titanium zinc, or galvanized steel and neatly adapted to roof tiles, roofing panels, or trapezoidal sheet metal. When properly installed, the verge flashing prevents moisture from getting under the roofing and reduces damage to battens, sheathing, and the underlay membrane.

For a durable finish, correct overlaps, suitable folds and allowances for thermal expansion, together with proper fastening using suitable screws or rivets, are essential. Appearance also plays a role in practice: powder-coated variants are available in many RAL colors and provide a modern, clean roof edge finish.

Patina

In roofing, patina is not “dirt”, but a natural protective layer that forms on metals such as copper and titanium zinc. On standing-seam and sheet-metal roofs, the surface reacts with oxygen, moisture and components of the air - a dense oxide or carbonate layer forms. This patina slows corrosion, extends service life and causes the color to change from glossy to matte: copper first turns brown and later green; zinc develops an elegant blue-gray finish.

Important for installation: do not sand or use acids or strongly alkaline cleaners, so that patina formation begins evenly. For repairs and connections, plan compatible materials, separation layers and proper drainage to prevent galvanic corrosion and staining. This keeps the roof covering watertight, gutters and flashings functioning properly, and the patina becomes a mark of quality. For building owners, this provides noticeable benefits in terms of value retention and sustainability.

Purlin

In roofing, a purlin is a load-bearing, horizontal component of the roof structure that transfers the loads from the rafters and roof surface to walls or supports. Purlins are generally classified as ridge purlins, intermediate purlins and wall purlins: The ridge purlin supports the rafter heads at the roof ridge, intermediate purlins carry loads in the middle of the roof, and wall purlins are positioned in the eaves area. Typical materials include structural solid timber (KVH), glulam (BSH) or steel - depending on the span, roof pitch and snow load zone.

For a durable construction, precise supports and secure connections (e.g. purlin anchors, bolts, beam hangers) and clean wood protection are essential, especially at penetrations and support points. In Europe, carpenters and roofers design purlins according to structural calculations so that the roof structure remains rigid and deflection is minimized, while the roof covering remains permanently watertight and crack-free. This creates a stable, economical roof structure for new builds and renovations.

Mono-pitch roof

A mono-pitch roof is a modern roof form with just one sloping roof surface - clear, efficient, and ideal for both new construction and renovation. Its single slope allows rainwater to be directed in a controlled manner to the eaves, which simplifies drainage, gutter routing, and maintenance. In roofing, the mono-pitch roof scores with efficient use of space: photovoltaic and solar thermal systems can be installed in an optimal orientation, and more usable interior space often results, along with more daylight through high wall areas.

Typical constructions are rafter roofs or purlin roofs, insulated in accordance with the GEG, supplemented by an airtight layer, underlay roof, and suitable roof covering - e.g. roof tiles, metal, or bitumen. Proper connections to parapets, verges, and penetrations are important to prevent moisture damage. This makes the mono-pitch roof durable, energy-efficient, and visually contemporary. Perfect for carports, extensions, and residential buildings.

Weather resistance

Weather resistance describes a roof structure’s ability to reliably prevent precipitation from penetrating under the specified conditions. It is largely determined by the choice of roof covering, the roof pitch, and the proper execution of additional measures, such as underlay roofs or seam sealing tapes for the double standing seam. In Germany, the technical rules of the roofing trade set the minimum requirements for each material.

• Pro tip for metalworkers: On extremely low-pitch standing-seam roofs from a 3° slope, weather resistance can only be guaranteed by using permanently elastic sealing tapes in the seam. Tools such as the BUSCHMANN TOOLS Seam Bender Set or the WUKO Sprinter are indispensable for quickly rolling and closing the seams on site.

Gutter bracket

The gutter bracket (also called a gutter iron) is the load-bearing fastening element of the gutter. It ensures secure anchoring to the eaves board or rafters and provides the gutter with the necessary slope so that rainwater can drain in a controlled manner to the downpipe. Gutter brackets must withstand extreme mechanical loads such as snow loads and meltwater.

• Tool benchmark: Accurately aligning and bending the ironwork to the exact angle without errors is one of the core tasks on the construction site. With a professional gutter bracket bender (e.g. from Freund or Stubai) with a bearing-mounted slide, the pitch can be set in no time without damaging the material.

Gable roof

The gable roof is the classic and most widespread roof form throughout Central Europe. It consists of two oppositely pitched roof surfaces that meet at the highest point - the ridge. It stands out for its economical construction, excellent weatherproofing, and ideal suitability for conversion into living space.

• Work safely: Since gable roofs are often steeply pitched, collective fall protection is the top priority. Systems such as the ABS SAFETY - Mobile Guard Pro for steep-pitched roofs reliably protect the team from falls at the gable verge and the eaves.

Snow load

Snow load is a climate-related variable action on structures. It describes the weight of snow on roof surfaces and is a key factor in the structural calculation of the roof structure, rafters, and purlins. In Germany, the country is divided into various snow load zones - the Alpine region and the Central Uplands are subject to extremely high requirements.

• Protection in the eaves area: To prevent snow masses from sliding down uncontrollably (roof avalanches), snow guard systems must be installed in accordance with standards. Today, the structurally secure fastening of the brackets to the substructure is carried out efficiently using powerful cordless impact drivers or collated nailers.

Bolted connection

The bolted connection is one of the most important mechanical fastening methods in modern timber and roofing construction. Unlike traditional timber connections (such as the mortise and tenon), it enables extremely high load transfers, can be calculated precisely, and saves a great deal of time on the construction site. Outdoors, only corrosion-resistant stainless steel screws (V2A/V4A) or specially coated washer-head screws are used.

• Tool tip: For fatigue-free driving of long wood construction screws into glulam (BSH), carpenters rely on high-torque cordless impact drivers with brushless motors that deliver maximum power without kickback to the wrist.

Wall plate

The wall plate (also called the sole plate) is the lowest horizontally running wooden component in timber frame construction and traditional roof construction. It rests directly on the concrete foundation or floor slab and serves as the base for the vertical studs or braces. The wall plate must be protected against rising construction moisture by a damp-proof barrier.

• Precision in timber framing: Since the wall plate determines the alignment of the entire component, absolute dimensional accuracy is essential. For precise notches and mortise-and-tenon joints, carpenters use the sharply ground KIRSCHEN chisel in a leather holster directly at the marking line.

Slate roofing

Slate roofing is considered the pinnacle of roofing craftsmanship. Slate is a pure natural product distinguished by its extreme durability (often more than 100 years), absolute UV resistance, and unmistakable, elegant appearance. Typical roofing methods in Germany include Old German slate roofing, scaled slate roofing, and modern rectangular slate roofing.

• The master craftsman’s tool: Even today, slate tiles are traditionally shaped by hand on the construction site. Working with the slate hammer and slate cutting anvil requires the utmost craftsmanship and precision to punch and shape the tiles perfectly.

Rafters

Rafters are the load-bearing wooden beams of a roof structure, running from the eaves to the ridge. They form the direct substructure for the counter-battens and the roof covering, transferring the loads involved (wind, snow, self-weight) to the purlins.

• Speed on the roof: When erecting the roof structure, the rafters must be connected to the purlins quickly and with a force-fitting connection. Where laborious nailing was once used, highly efficient installation systems such as the HiKOKI 18V Cordless Strip Nailer are now used to secure sheets and battens at record speed.

Standing seam

The standing seam roof is a modern, architecturally sophisticated metal roof covering. Thin sheet metal panels (strips) are laid side by side, and their raised edges are joined together. The main types are the double standing seam for roof surfaces and the angled seam for façades. The system is completely screw-free and hole-free in visible areas, guaranteeing extremely low maintenance.

• Machine power for roofers: To close long sheets with minimal effort, modern businesses rely on semi-automatic seaming systems such as the WUKO Sprinter or the BUSCHMANN TOOLS Double Falz Seamer. The universal UNIBIEGER is used for detail work in the entry area.

Brace

A brace is a diagonally installed timber component in the roof structure that serves to stiffen the construction. It absorbs horizontal forces (e.g. wind pressure on the gable) and prevents the roof structure from "tilting" or shifting. Braces mainly work in compression.

• Tradition meets modernity: In traditional timber framing, braces are fitted using complex timber joints such as the tenon or the shear blade. A sturdy carpenter's chisel is the tool of choice for precisely reworking the timber faces on site.

Eaves

The eaves are the lower edge of a roof surface, where rainwater is collected and directed into the gutter. They are the lowest point of the roof and particularly demanding geometrically, as this is where roof ventilation (air intake through the eaves grille) meets the transition to drainage.

• Scratch protection in visible areas: Since the eaves flashing is fully in view, roofers use special tools such as the Falzsid PVC Eaves Seamer when closing the seams. The plastic jaws reliably prevent unsightly dents on coated sheet metal.

Substructure

The substructure comprises all components located beneath and supporting the actual roof covering. On pitched roofs, it usually consists of rafters, roofing underlay, counter battens, and supporting battens; on flat roofs, it consists of the concrete deck or trapezoidal metal sheets, including the vapor barrier and insulation. It must be dimensioned to meet all structural requirements.

• Efficient batten installation: Quickly measuring and fixing the supporting battens is crucial for construction progress. With modern cordless nailers, the substructure can be nailed down in no time, providing complete wind resistance and compliance with standards.

Roofing underlay

The roofing underlay is a vapor-permeable but completely watertight membrane installed directly beneath the roof covering on the rafters. It serves as a “second water-bearing layer” and protects the underlying thermal insulation from wind-driven snow, wind-driven rain, and condensation, while allowing moisture from the interior to escape outward.

• Safe, airtight bonding: To meet airtightness requirements, the overlaps of the membranes must be bonded in accordance with the system specifications. Stapling the membranes to the rafters is quick and easy with professional manual or hammer tackers.

Below-rafter insulation

The between-rafter insulation is a supplementary thermal insulation layer installed on the room side (i.e., beneath the rafters). It is often used during roof renovations to improve the energy performance of the existing between-rafter insulation without having to completely strip the roof. It also minimizes the wooden rafters as thermal bridges.

• Interior finishing precision: Since this layer lies directly beneath the subsequent plasterboard covering, the supporting battens must be aligned perfectly. The wood and insulation materials must be cut cleanly using specialized insulation knives or cordless chop saws.

Thermal insulation

Roof insulation is the key to high energy efficiency, winter cold protection and summer heat protection. It drastically reduces heating costs and is strictly regulated by the German Building Energy Act (GEG). In pitched roofs, a distinction is made between over-rafter insulation, between-rafter insulation and under-rafter insulation.

• Professional installation: Whether mineral wool, wood fibre or PIR rigid foam, insulation materials must be installed continuously and without compression. Clean cuts without fraying are only possible with perfectly sharpened cutting tools.

Hipped roof

The hipped roof is an especially robust and visually distinctive roof design. Unlike a gable roof, it has no vertical gable walls (verges), but sloping roof surfaces on all four sides. The triangular roof surfaces at the gable ends are called hips. This design offers the wind little surface to attack and is ideal for exposed weather conditions.

• Demanding timber framing: Constructing a hipped roof requires highly precise carpentry preparation because the hip rafters meet. Every birdsmouth and splayed cut must be positioned with millimetre precision.

Wind uplift protection

Wind uplift protection prevents the roof covering from being torn off the roof during severe storms or hurricane-force gusts. Air flowing over the roof creates enormous negative pressure (suction forces), especially at the edges (verge and ridge). Protection is provided by securing the roof tiles against storms with storm clips or by screwing down the sheet-metal strips.

• Standard-compliant fast installation: Calculating and installing storm clips is mandatory in Germany. Modern clip-in storm clips can be fixed directly to the battens using the appropriate tool or special installation devices, without much effort.

Tenon

The mortise-and-tenon joint is probably the best-known and most traditional wood joint in carpentry. The end of a wooden beam (the tenon) is tapered so that it fits exactly into a corresponding recess (the mortise) in the counterpart. The joint is traditionally secured with a wooden peg.

• Masterful craftsmanship: Even in the age of CNC joinery centers, manually finishing a mortise remains part of basic training. A first-class, high-alloy KIRSCHEN chisel produces mirror-smooth wood surfaces and a perfect form fit.

Clamp

In roof framework construction, a clamp is a pair of horizontally arranged timber components that encloses two opposing rafters, gripping them like a pair of tongs. It provides horizontal bracing and load distribution in collar-beam or purlin roofs and is usually connected to the rafters with bolts or dowels to create a load-bearing joint.

• Drilling through the assembly: To drill bolt holes precisely aligned through all three timber layers, consisting of a clamp, rafter, and clamp, carpenters use powerful, high-torque drills with long auger bits.

Zinc

Zinc, used almost exclusively as high-quality titanium zinc in roofing, is one of the most durable and important materials in the sheet-metal trade. Over time, exposure to the elements forms a matte, blue-gray patina that permanently protects the material from corrosion. It is used for gutters, downpipes, eaves flashingsand complete standing-seam roofs.

• The perfect connection: Titanium zinc can be soft-soldered exceptionally well. For permanently durable and watertight gutter joints, professionals rely on highly efficient propane soldering kits, such as those from Sievert, which guarantee a consistent working temperature on the roof even in windy conditions.

Carpenter

The carpenter is the skilled professional responsible for all timber construction on a house. In roofing, their main tasks are building the roof framework, installing dormers, preparing timber structures, and installing timber sheathing. The profession combines centuries-old traditions, such as the journeyman years, with state-of-the-art CAD and CNC technology.

• Always at hand: In addition to traditional workwear, every carpenter's basic equipment on the construction site includes a first-class striking and chiseling tool for reworking joints directly on the scaffolding.

Between-rafter insulation

Between-rafter insulation is the most commonly installed form of thermal insulation in pitched roofs. The insulation material, usually flexible mineral wool or natural-fiber insulation batts, is fitted tightly and continuously into the space between the rafters. It is economical and highly efficient, but must be protected on the room side with an airtight vapor barrier.

• Clean cutting: To prevent thermal bridges caused by cavities, the insulation material is cut slightly oversized. A long, double-sided insulation knife is the most important tool here for achieving a perfect result.

Timber joint

Timber joinery encompasses all techniques for connecting individual timber beams in the roof frame so that they are stable and load-bearing. A distinction is made between traditional carpentry joints, such as mortise-and-tenon joints, scarf joints, or birdsmouths, and modern engineered connections using steel components, dowels, and screw connections.

• Precision is crucial: Every weakening of the timber caused by a notch must be planned with structural precision. Cleanly chiseling out the remaining wood requires sharp, high-quality tools to prevent cracks from forming in the timber.

Roof tile

The roof tile is the oldest traditional covering material for pitched roofs and is made of fired clay. It differs fundamentally from the concrete roof tile and is available in countless shapes, such as interlocking tiles or plain tiles, and finishes, including natural red, engobed, or glazed. Roof tiles are extremely durable, colourfast, and vapor-permeable.

• Cutting on the scaffolding: At valleys, hips, and the verge, the tiles must be precisely cut with mitred joints. Roofers use portable cut-off grinders with durable diamond cutting discs for clean edges without breakouts.

Box gutter

The box gutter has a square cross-sectional shape and is a type of roof gutter used particularly often in modern, cubic building architecture and industrial construction. With the same space requirements, it often offers greater water capacity than the half-round gutter, but its design makes cleaning and seam work somewhat more demanding.

• Sheet-metal work at the highest level: Folding the end pieces (gutter bottoms) of box gutters requires precise marking and accurate bends. With coordinated sheet-metal tools and closing plates, the box gutter is brought into perfect shape before soldering.
  
  

Turning up edges / Bending

Turning up edges, also known as bending or folding, refers to the plastic forming of sheet-metal strips (seams) or sheet-metal blanks to a defined angle. It is the fundamental process in the sheet-metal trade for producing connections, flashings, seams, or coverings with a precise fit. Since modern metal roofs often need to be adapted directly on the construction site, mobile edge forming has become established as an extremely time-efficient method.

• The benchmark on the construction site: Instead of walking to a stationary workshop machine for every bend, professionals use portable roll-forming benders (known as benders). The manual roller benders from WUKO (e.g., the Uni Bender 2204 or 6200) and the DRÄCO Eco-Bender enable precise bends from 90° to 100° directly along the chalk line - gentle on the material and without pressure marks.

Asbestos disposal

Asbestos disposal is one of the most strictly regulated tasks involved in renovating old buildings' roofs. Because asbestos fibers are extremely hazardous to health and carcinogenic, Germany has very strict occupational safety regulations (TRGS 519). Any removal, transportation, and packaging of asbestos-containing materials (such as old corrugated sheets or slate roofing) requires certified protective equipment and clearly labeled disposal containers.

• Comply with safety regulations: Complete PPE is mandatory for professional renovation. This includes FFP3 class particulate-filtering respirators (such as the 3M Aura 9332+), antistatic disposable coveralls (Cat. III Type 5/6), and fiber-tight asbestos big bags or container bags with the legally required warning label. Residual fibers on the construction site must also be fixed with a special residual fiber binding agent.

Close the seam

Closing a seam describes the final mechanical operation in which two interlocking sheet-metal profiles (e.g. the upper and lower seams in a double standing seam) are pressed together securely and watertightly. Only when the seam flanges have been fully compressed is the roofing completely stormproof and watertight. The process requires absolute uniformity to prevent stresses in the metal roof.

• From hand tool to automatic machine: For short sections, connections, or corners, sheet-metal workers use manual seam closers, angle seaming irons, or compression seam pliers (e.g. from Stubai or Masc). However, those who have to close long standing seams on large roofs continuously can save significant muscle power and valuable working time on site with motorized systems such as the WUKO Sprinter or the BUSCHMANN TOOLS Double Seam Seamer.

Protective jaws / plastic jaws

Protective jaws (usually made of high-strength PVC or special plastic) are replaceable inserts for seam pliers, angle seamers, or eaves closers. They are used wherever coated sheet metal, painted visible surfaces, or highly sensitive metals are processed. Since conventional steel jaws can scratch the coating, plastic jaws form a protective barrier between the tool and the material.

• Scratch-free installation: An unprotected tool damages the zinc or paint coating, inevitably leading to corrosion later on. Tools with integrated PVC jaws (such as the Falzsid PVC Eaves Closer or the FALZSID Angle Double Seamer) guarantee flawless results in visible areas at the eaves, verge, or parapet. Matching replaceable plastic inserts are also available for retrofitting existing Buschmann or Stubai tools.

Beading / Beading machine

Beading refers to rolling groove- or line-shaped depressions (beads) into sheet-metal pipes or metal sheets. In roofing and sheet-metal work, beading primarily serves two purposes: significantly increasing the rigidity of thin sheets (stiffening bead) and creating precise push-fit and socket connections for rainwater downpipes.

• Flexibility on site: While seaming machines used to be heavy, stationary workshop equipment in the past, modern tinsmiths now work on the move. With cordless seaming machines such as the BUSCHMANN TOOLS AccuBeader, seams for pipes and sheets can be rolled directly on the construction site using a cordless drill driver, eliminating the trip to the workshop and greatly speeding up on-site adjustments.
  

 

Asbestos corrugated sheets

Asbestos corrugated sheets, often known as "Eternit sheets", were installed by the ton on roofs throughout Germany until the 1990s because of their exceptional weather resistance and fire resistance. Today, they pose one of the greatest challenges during renovation of existing buildings, as microscopic, carcinogenic asbestos fibers are released when the sheets break. Their removal is subject to the strictest legal requirements (TRGS 519).

• Proper disposal: When dismantling asbestos corrugated sheets, dust-tight packaging is the most important occupational safety measure. Specially sized large containers such as the Big Bags 320 x 125 x 30 cm – Asbestos are used for this purpose; they are precisely matched to the dimensions of corrugated sheets, coated, and UV-stabilized. Businesses use Eskorte Barrier Tape “Asbestos Fibers” and corresponding warning stickers to mark hazardous areas and containers.

Sheet metal cutter / roller cutter

A sheet metal cutter, often also referred to as a roll shear or mobile roller cutter, is a mobile tinsmith's tool for quickly cutting sheet metal without producing chips. Unlike the classic hand-operated sheet metal shears, the sheet metal cutter runs over the sheet on rollers or a guide rail. This makes it possible to perform extremely long longitudinal and cross cuts directly from the coil or on prefabricated sheets, perfectly straight and without any material distortion.

• High-speed cutting on the roof: When sheets need to be shortened or eaves flashings cut to size, mobile systems save a great deal of time. Leading devices such as the WUKO Cutter 1070 or the lever-driven WUKO Clipper 1022 C2A cut titanium zinc, copper, and aluminum without distortion or sharp burrs. For maximum automation, the BUSCHMANN TOOLS Roll Cutter with Laser serves as an innovative attachment for cordless drill drivers.

Bitumen welding machine / roof welding machine

A bitumen welding machine (or roof welding machine) is a high-performance construction-site machine used for fully automatic welding of membranes on flat and low-pitched roofs. The machine travels along the weld seams at a continuously adjustable speed, temperature, and air volume. This eliminates human error during the welding process and ensures uncompromising, documentable seam quality on large industrial and commercial surfaces.

• The flameless future: While conventional welding with a gas torch always carries the risk of fire, modern automatic machines work completely flamelessly with hot air. The absolute top class in the flat-roof segment includes devices such as the LEISTER VARIMAT 500 or the compact LEISTER UNIROOF 700, which features integrated digital quality control for seamless documentation of the welding parameters. For bituminous top layers, the LEISTER BITUMAT B2 is the safest and fastest option on the market.

Sheet-metal coils / small coils

Sheet-metal coils (or strip metal) are rolled metal strips made of titanium zinc, copper, aluminum, or stainless steel that serve as raw material in the metalworking trade. In workshops or directly on the construction site, they are fed into profiling or cutting machines to produce custom roof panels, verge flashings, or eaves flashings in exactly the required length. Working from a coil drastically minimizes material waste compared with fixed sheet-metal panels.

• Controlled handling without material stress: Since large coils can weigh several tons and even small coils can weigh up to 200 kg, handling them in the warehouse and on the construction site is a safety factor. Mobile transport and decoiling devices such as the MASC Unicoiler or the MASC Kuli & Materialrollenhalter mit Führungsrollen guarantee completely controlled, twist-free decoiling of the metal, without deformation or dangerous springback of the strip end.

Leakage test / vacuum test

Leak testing is the final quality assurance step when accepting flat-roof and structural waterproofing systems. Since even the smallest hairline cracks in the weld seams of plastic membranes can cause devastating water damage to the roof structure, critical seam areas and detailed connections must be checked precisely. In addition to manually running a seam tester along the seam, vacuum testing is considered the safest method.

• Make leaks visible immediately: During vacuum testing, a transparent test bell is pressed onto the soap-water-coated weld seam using a vacuum pump. If there is a leak, air bubbles become immediately visible beneath the bell. High-end testing systems such as the LEISTER VACUUM BOX combined with the LEISTER VACUUM PUMP enable fast, non-destructive, and completely reliable leak testing directly on site.

Continuous-cut shears / Pelican shears

Continuous-cut shears (often referred to as pelican shears in the trade because of their distinctive head shape) are specialized hand shears for long, straight cuts in the sheet metal trade. Their key design advantage is that the tool head is angled so that the cut sheet metal passes beneath the hand during cutting. This prevents the hand from moving into the sharp cut edge, and the sheet metal does not bend upward.

• Smooth material flow: Anyone who needs to manually cut sheet metal panels to length or cut strips needs shears with a long service life. The STUBAI continuous-cut shears 350 mm (PVC-insulated) or the MASC | Stubai right-handed pelican shears are forged from high-strength tool steel, guarantee extremely clean cut edges, and noticeably reduce the force required - ideal for long cuts when installing façade cladding.

Forming / Swaging

Forming (often referred to as swaging in the sheet metal trade) describes the plastic stretching or compressing of sheet metal edges to create curved, wavy, or circular sheet metal profiles. This technique is required whenever demanding architectural details such as round dormers, curved roof edges, tower cladding, or radii need to be covered with sheet metal. Without specialized tools, bending curves inevitably causes waviness and distortion in the material.

• Perfect curves without wrinkles: To force sheet metal neatly into a curve, tradespeople use specialized tools such as the MASC eaves wedge for sweeping or the MASC wedge and radius hammer. When prefabricated standing-seam profiles need to be closed around rounded dormers, professionals use the MASC rounded dormer closer or the FREUND short rounded dormer closer to adapt the angular seam evenly and with minimal material stress to the radius.

Gas torch / torch-on roofing torch

The gas torch (primarily referred to as a torch-on roofing torch in flat-roof construction) is the traditional standard tool for laying and welding bitumen membranes. Powered by liquid propane gas, the torch produces a highly efficient, extremely hot flame that superficially liquefies the bituminous top layer of the membranes, allowing them to bond permanently and watertightly to the substrate. Working with an open flame requires the utmost caution and equipment that complies with applicable standards.

• Performance and weight reduction: Since roofers often spend hours welding large areas, tool weight determines fatigue and back pain. High-end titanium torches such as the SIEVERT PRO 88 Titanium torch-on roofing torch set drastically reduce weight compared with steel torches while delivering uncompromising heating power of up to 114 kW. For detailed areas and seams, professionals use specialized edge welding torches to guarantee precise, safe work.

Pry bar / crowbar

The pry bar (universally known in the trade as a crowbar or wrecking bar) is the most important tool for dismantling, disassembly, and renovation work in roofing. Its leverage makes it possible to generate enormous force for prying up old decking, pulling stubborn nails from the roof structure, or loosening damaged components while minimizing material damage.

• The smart demolition routine: Classic demolition with a sledgehammer takes an enormous amount of effort and often damages sound wooden structures. With specialized levering tools such as the FREUND BOZZ demolition tool or the MASC - HAVE universal pry bar set, dismantling can be carried out in a controlled manner and with forward momentum. This conserves the team's energy and massively accelerates progress on roof renovation sites.

Gutter Seam / Gutter Connection

The gutter seam is the joint between two individual segments of a gutter or at the gutter corners. Since gutters are subject to extreme changes in length due to temperature fluctuations, the gutter seam is one of the most critical areas of roof drainage. Traditionally, these joints are connected by soft soldering, for example with Sievert soldering kits. However, modern workflows or difficult weather conditions increasingly call for solder-free, mechanical connection systems.

• The solder-free alternative in wind and cold: When strong winds, extreme cold, or wet weather make soldering on the roof impossible, the MASC Gutter Seam Set (RNS), combined with the MASC Gutter Seam Clamp (RNZ33/RNZ28), offers the perfect solution. With the help of the permanently flexible, self-bonding Nanofil Seam Insert and high-strength stainless steel sealing rivets, an absolutely watertight, flexible, and extremely durable gutter connection is created directly on site - entirely without an open flame.

Decorative Hammer

The decorative hammer, often also made as a slate or sheet metal worker’s ceremonial hammer, is a highly refined, handcrafted traditional tool in the skilled trades. Following a centuries-old tradition, it is forged from high-quality specialty steel and then elaborately electroplated - typically in 24-karat solid gold, chrome, or antique copper vintage finishes. In the skilled trades, it serves as a symbol of pride, tradition, and outstanding achievement.

• The perfect gift for tradespeople: The decorative hammer is purely a keepsake and display piece for the workshop or office. In the roofing and carpentry trades, it is considered the absolute standard gift for passing the journeyman's or master craftsman’s examination, company anniversaries, moving into a new home, or retirement. At Roofify, the hammer can optionally be personalized with an Individual Engraving and ordered in an elegant Wooden Presentation Box.

Drip flashing / gutter stone flashing

The drip flashing (often also called eaves flashing or gutter stone flashing) forms the proper transition from the roof surface to the gutter. It ensures that flowing rainwater or melting windblown snow is directed safely into the gutter and does not get behind the gutter into the substructure or masonry. It also mechanically secures the lower edge of the underlay membrane.

• Precision folding at the eaves: Drip flashings must be precisely matched to the roof pitch and gutter spacing. To process the flashings directly on site on the scaffolding without distortion or scratches, sheet metal workers use mobile rolling folders such as the WUKO Uni Bender 2204 or cut the blanks distortion-free directly from the coil using the WUKO Cutter 1070.

Ridge / roof ridge

The ridge is the uppermost, usually horizontal intersection line of two roof surfaces sloping in opposite directions (e.g. on a gable roof). It forms the roof’s architectural and functional crown. Its main task is to seal the upper edge completely against rain, while special ventilation elements (ridge roll/dry ridge) simultaneously direct moist air from the ventilated cavity to the outside in a controlled manner.

• Storm-resistant ridge tile installation: Ridge tiles (ridge caps) are located in the zone with the highest wind uplift protection requirements. For quickly and correctly screwing the ridge clips onto the ridge purlin, roofers use highly efficient fastening technology such as the THE NEW HIKOKI 18V cordless drill/driver to guarantee maximum pull-out lengths in the wood.

Hip flashing / hip tile flashing

The hip is the external, sloping line formed where two roof surfaces meet - typical of a hipped roof. In sheet-metal work, this line on metal roofs is covered with a custom-made hip seam panel or hip flashing. Since water runs off on both sides here, the seam connection must be executed completely free of distortion to absorb thermal stresses.

• Perfectly closed transitions: Manually adapting the standing seam panels to the sloping course of the hip requires exceptional craftsmanship. To close the angle seams in the visible hip area without scratching, professionals use specialized sheet-metal tools such as the FALZSID PVC angle double seamer, whose protective jaws prevent damage to coated metals.

Rear ventilation / ventilation layer

The rear ventilation is the energy-related centerpiece of the modern, ventilated roof assembly (cold roof). Installing the counter-battens creates a defined cavity between the underlay membrane and the roof covering. Due to thermal convection, cold air enters at the eaves, absorbs moisture that has diffused from the interior, and transports it away at the ridge. This effectively prevents mold growth and provides protection from summer heat.

• Exact alignment of the battens: To ensure unobstructed airflow, the battens must be installed in perfect alignment. Carpenters detect and correct irregularities in the wood using precision measuring equipment such as the STABILA TECH 196 DL electronic spirit level before fixing the counter-battens with the PREBENA Kraftpaket stapling hammer.

Cover strip / wall connection clamping strip

The cover strip is a mechanical metal finishing profile used for the permanent fixing and sealing of flashing connections to vertical building elements (e.g., masonry, chimneys, or dormer walls). It presses the flashing or waterproofing membrane against the wall and prevents water running down from above from getting behind the construction. The top edge is additionally sealed with an elastic sealant joint.

• Fast installation in hard substrates: Installing a flashing bar requires numerous drill holes in concrete or clinker brick. To work efficiently in the often confined area behind a dormer, tradespeople rely on compact, extremely powerful machines such as the HIKOKI 36V Cordless Drill Driver DS36DC, which effortlessly generates the pressure required for anchor installation.

Leaf guard / Gutter strainer

A leaf guard is a functional protective element that is inserted into the gutter or mounted directly above the outlet of the downpipe (as a gutter strainer). It prevents leaves, twigs, or moss from being washed into and clogging the downpipe. Clogged drainage systems inevitably cause water to back up during heavy rain, flooding the roof or damaging the façade.

• Maintenance and installation under control: Since leaf guards need to be cleaned regularly, simple mechanical installation is essential. Sheet-metal workers use hand-operated shears such as the forged MASC | Stubai Pelican Shears to cut gutter openings precisely and fit accessories, producing clean, injury-free edges.

Mansard roof

The mansard roof is a Baroque, architecturally sophisticated roof form in which the roof surfaces are steeply angled in the lower section and taper out more gently in the upper section. This creates almost the full amount of living space of a full storey in the attic without disruptive sloping ceilings. The transition line between the two roof pitches (the mansard transition) places high structural demands on weatherproofing and moisture protection.

• Complex timber framing in the transition area: The traditional timber construction of the roof structure requires millimeter-precise connections between the rafters and the purlins at the mansard transition. For precise reworking of the timber connections on the scaffolding, carpenters use the sharply forged Elite: The KIRSCHEN Carpenter's Chisel Set with Leather Pouch guarantees clean flanks for maximum load transfer.

Emergency drainage / Spouts

Emergency drainage is a legally required safety feature for flat roofs with internal drainage. If the main outlets fail (e.g. due to once-in-a-century heavy rainfall or blockage), the emergency drainage - usually designed as a parapet scupper (a pipe passing through the parapet) - discharges the water without restriction directly onto a courtyard area where flooding is permitted. It prevents the roof from suffering structural failure due to overloading.

• Precise seam inspection at drainage outlets: The connections between plastic membranes or bitumen membranes and emergency outlets are critical points. To inspect the weld seams around the scupper 100% nondestructively, flat-roof professionals use the LEISTER VACUUM BOX in combination with the LEISTER VACUUM PUMP to make leaks immediately visible through negative pressure.

Gutter corner

The gutter corner is a prefabricated or handmade component of a roof drainage system that enables a gutter to change direction around corners (external or internal corners). Since extreme turbulence and large volumes of water meet at building corners, the gutter seam at the corner must be made absolutely stable and permanently watertight.

• The perfect corner without heat: When soldering is impossible due to strong winds or sensitive surfaces, sheet-metal workers use the innovative MASC Gutter Seam Set (RNS). In combination with the MASC Gutter Seam Clamp and the self-welding Nanofil Insert, the gutter corner is riveted to the gutter cold, extremely quickly, and with an absolutely permanently watertight seal.

Roof panel / sheet-metal roof panel

The term roof panel (or sheet-metal roof panel) refers to the individual, long metal strips that form the actual roof covering of a metal roof (e.g. in a standing seam system). The panels are generally cut from small coils to the exact length of the roof using a profiling machine, then folded up along the long sides so they can later be seamed together.

• Covering ground at speed: Manually closing the standing seams on large industrial surfaces requires an enormous amount of effort. Modern sheet-metalworking businesses therefore rely on semiautomatic or electric seam closers such as the WUKO Sprinter or the BUSCHMANN TOOLS Double Falz Seamer, which move independently along the seam and close it in a single operation.

Eaves flashing / gutter inlet flashing

(Note: Often used synonymously with eaves inlet flashing, but here it focuses on the mechanical protection of the eaves timber.)The eaves flashing protects the structural timber of the eaves (the eaves board) from splash water and moisture that can be forced beneath the first row of tiles by the wind. It directs the water from the underlay membrane directly into the gutter, keeping the timber structure permanently dry.

• Chip-free cutting directly on site: Since eaves flashing must be individually adapted to the gutter brackets, fast cuts are necessary. With the mobile roller cutter WUKO Clipper 1022 C2A or the WUKO Cutter 1070, tradespeople cut the metal straight as an arrow directly at the installation site, without burrs or distortion of the sheet-metal edges.

Canopy

A canopy is a small, self-supporting or supported roof structure over house entrances, shopfront areas, or loading ramps. It serves both architectural purposes and the practical purpose of protecting people and doors from rain and snow. In the trade, canopies are often built as miniature versions of large roofs - including a mini gutter, downpipe, and timber framing.

• Compact power in timber construction: Since canopies are usually anchored directly to existing façades, the timber connections must be extremely lightweight and precisely fitted. For quickly installing high-strength screw connections in the supporting structure, carpenters use high-torque cordless impact drivers from HiKOKI to work in the wood without fatigue or splintering.
  

Bending machine / segment bending machine

A bending machine is a mechanical or hydraulic sheet-metal machine used for bending and forming large sheet-metal panels. In modern sheet-metal workshops and directly on construction sites, segment bending machines are increasingly being used. Thanks to individually removable segments (gooseneck segments) on the cheeks, sheet metal can be bent up on all four sides to create complex shapes such as cassettes, boxes, or custom-made roof-edge profiles.

• Mobile profiling on site: To save long journeys between the construction site and workshop, modern trades rely on transportable solutions. Site-ready machines such as the DRÄCO K1-AGNU-4 segment bending machine can be set up flexibly and used directly on site. The perfect accessory is the DRÄCO 1000 mm roller shear with linear guide, which allows sheet metal to be cut to length directly at the bending machine without chips and with precision.

Marking template / marker

The marking template (often also called a “marking fir” in trade jargon) is an indispensable measuring and marking tool in roofing and sheet-metal work. It is used to mark standard dimensions (e.g. seam heights, overlaps, or hole spacings) quickly, precisely, and repeatedly directly onto sheet metal or wood. Without such a tool, tradespeople would have to laboriously measure every millimeter with a folding ruler, drastically increasing the error rate.

• Precision series work on the roof: When it comes to marking consistent distances for clip fasteners or standing-seam closures, tools such as the MASC Big marking template (5–200 mm) or the flexible MASC marking template are indispensable everyday aids. For curved lines and radii, sheet-metal workers use the FREUND curved marking template to apply precise markings at a glance.

FFP3 respirator

The FFP3 respirator is a particle-filtering half mask and provides the highest level of protection among disposable fine-dust masks. In roofing supplies, it is the legally required PPE (personal protective equipment) for extremely hazardous work. It filters at least 99% of airborne particles and reliably protects the team from carcinogenic substances such as respirable asbestos dust, quartz dust (when cutting roof tiles), or old mineral-fiber insulation materials.

• Safety when disposing of asbestos: No compromises may be made when dismantling hazardous materials on the roof. Masks with an integrated exhalation valve, such as the 3M Aura 9332+BV FFP3 respirator mask, drastically reduce breathing resistance and heat buildup under the mask. This is particularly noticeable during demanding, dust-intensive renovation work in combination with the Coverstar 500 disposable coverall and provides a significant comfort and safety benefit.

Sheet-metal nibbler

A sheet-metal nibbler, also called a nibbler, is a chipless cutting tool for sheet-metal processing. Unlike conventional tin snips, the nibbler separates the material through a continuous punching motion (the up-and-down movement of a punch). This allows sheets to be cut completely distortion-free and without any deformation of the edges - ideal for clean cutouts, notches, or tight curved cuts directly in the sheet.

• Two functions in one tool: To minimize tool changes during demanding work on construction sites, sheet-metal workers use smart combination tools. The MASC BK1/II sheet-metal nibbler (also available in a set with an edge deburring tool) combines highly precise cuts with the ability to deburr sheet-metal edges cleanly and directly, without damaging the material or colored coatings.

Rotary hammer / cordless drill/driver

The rotary hammer and cordless drill/driver are versatile electric powerhouses on every construction site. While the drill/driver is used in timber construction for quickly creating high-torque screw connections (e.g. in purlins or formwork), the rotary hammer's pneumatic hammer mechanism is used on hard substrates such as concrete ring beams or clinker masonry.

• Uncompromising power for demanding daily work: On the roof, battery life determines construction progress. Carpenters and roofers rely on brushless high-performance tools such as the HIKOKI cordless drill/driver DS36DCW2Z (36V). Paired with the HIKOKI Multi Volt cordless starter set, the machine delivers the power needed to drive even thick auger bits or hole saws through wood during prolonged heavy-duty use without any drop in speed.

Coil wagon

A coil cart (also called a mobile uncoiling station) is a heavy-duty transport system used in the sheet metal workshop and directly on the construction site for safely handling sheet metal coils. Since metal roofing sheets are often required in extremely long lengths, large or small coils are stored on the coil cart's ball-bearing rollers. This enables completely twist-free, controlled, and surface-protective unrolling of the strip material directly into the profiling or cutting machine.

• The mobile cutting station: To not only unroll coil material but also cut it precisely to length, professionals use multifunctional systems. High-end solutions such as the DRÄCO Mobile Coil Carts from the K1-CW series (available with an integrated cross-cutting or longitudinal cutting unit) allow millimeter-precise cutting directly from the coil - without having to transport additional, heavy sheet shears to the construction site.

Roof bevel / wooden bevel

The roof bevel (or wooden bevel) is a traditional, adjustable measuring tool used in carpentry and timber construction. It consists of a stock and a movable blade that can be locked at any desired angle with a locking screw. It is used to capture existing angles (e.g. the roof pitch when renovating an old building or the slope of rafters and braces) directly on the structure and transfer them accurately to the new structural timber.

• Traditional craftsmanship meets digital precision: For classic manual timber framing, the 300 mm wooden bevel from Freund is the absolute standard tool for quickly marking out on the construction site. In modern engineered timber construction, however, when it comes to digital documentation, tradespeople combine this routine with tools such as the STABILA TECH 700 DA electronic angle finder, which combines an angle finder, spirit level, and bevel in a single high-end instrument.

Downspout hole saw

The downspout hole saw (often designed as a bi-metal hole saw) is a specialized drilling tool for sheet metal workers. It is needed to cut clean, circular openings in gutters when a new outlet connector for the downspout is to be installed. Compared with traditional tin snips, cutting with a hole saw prevents the gutter base from warping or tearing and guarantees a perfectly flow-optimized opening.

• Wear-resistant with titanium zinc and copper: Anyone who regularly installs roof drainage systems needs a durable set. The MASC downpipe hole saw set (60–120 mm) is made of high-strength HSS bi-metal and offers all the standard diameters for downpipe sizes, delivering perfectly round, burr-free cuts in seconds.

Hot-air tool / hand welding gun

The hot-air tool (usually referred to as a hand welding gun in the roofing trade) is the essential tool for welding plastic membranes (PVC, TPO, FPO) on flat roofs, as well as for detail work on connections, dormers, and parapets. Precisely adjustable hot air plastically melts the overlap area of the roofing membranes, which is then homogeneously joined using a pressure roller. The process is completely flame-free and offers maximum protection against fire hazards.

• Digital temperature control: Since plastic membranes require an extremely narrow temperature range for welding depending on weather conditions and material, precise control is essential. Industry standards such as the digital LEISTER TRIAC AT allow parameters to be set via a display and offer an intelligent ECO mode. For maximum cordless freedom on scaffolding, the innovative cordless hot-air tool LEISTER NEXHEAT 300 A-LP (18V) provides the solution.

Slotted-hole punch pliers

The slotted-hole punch pliers are a specialized hole punch for sheet metal and facade construction. Their main purpose is punching elongated holes (slotted holes) in sheet-metal panels, hem strips, or facade panels. These slotted holes are crucial in metal construction because they provide mechanical support for screws or rivets while also giving the sheet metal room to expand horizontally with temperature fluctuations (controlled thermal expansion compensation).

• Punching instead of drilling: Enlarging holes afterward with a drill takes a lot of time and produces dangerous drill shavings that can damage the patina. With the robust FREUND slotted-hole punch pliers, tradespeople punch precise elongated holes in a single, clean step - protecting the material, saving time, and delivering absolute precision.

Ladder safety device

The ladder safety device is a mechanical safety device used for occupational safety on construction sites. It is designed to securely anchor portable leaning ladders to the building in the upper area (e.g. at the eaves or the parapet). Since ladders slipping or tipping sideways is one of the most common causes of accidents in roofing, compliant securing during recurring inspections is an essential factor in occupational safety.

• Safe access to the roof: The MASC ladder safety device is a smart, universally applicable solution. It can be quickly secured to almost any gutter without tools and ensures that the ladder stays absolutely firm when the team transports materials onto the roof or installs fall protection systems such as the ABS SAFETY roof access set for safe transition.

Pipe expander set

The pipe expander set is a coordinated selection of various expanding tools for roof drainage. It combines the most common diameters to expand rainwater downpipes of different sizes precisely and create perfectly fitting socket connections. Such a set is an essential part of the basic equipment in every sheet metal worker's vehicle, as it guarantees maximum flexibility when renovating and adapting existing systems.

• The all-in-one pipe expander: Instead of carrying around many individual tool heads, modern businesses rely on ingenious combination solutions. As an all-in-one device, the FREUND 6D pipe expander covers six common downpipe diameters at once. Those who prefer the complete system in a protective transport case can choose the FREUND pipe expander set (Ø 76 to 120 mm) for straightforward operation with the SDS chuck of a rotary hammer.

Shell iron / seaming iron

The shell iron (often also referred to as a seaming iron or prism shell iron) is the classic forged hand tool used by sheet metal workers for manual straightening and shaping work on sheet metal. It serves as a stable counterform (anvil) when folding over sheet metal edges, aligning irregular seams, or neatly working connections into tight valleys and cornices.

• Precise guidance for seaming techniques: For demanding detail work on metal roofs, tradespeople use forged quality forms. The FREUND seaming iron with prism (25x25mm) and the compact FREUND seaming iron with prism (20x20mm) provide perfect guidance and repeatability when manually turning up edges - an absolute must-have for every plumber using traditional hand seaming of sheet metal profiles.

Slate roofer’s cutting bridge

The slate roofer’s cutting bridge is the fundamental support and counterform for manually shaping and working slate tiles. It is driven directly into the wooden roof structure or a wooden work trestle. The roofer places the slate on the cutting bridge’s ground edge and strikes the material from above with the slate hammer to break the slate precisely and cleanly into the desired shape (e.g. scale or rectangle).

• Straight or curved for every corner: Depending on the roofing type and detail, different designs are used. For classic, straight cuts, the STUBAI slate roofer’s straight cutting bridge is the proven standard tool. For tricky valleys, ornaments, or concealed valley areas, however, roofers use the STUBAI slate roofer’s curved cutting bridge (325 mm) to work precisely even at difficult angles.

Beading machine / cordless beading machine

A beading machine is a profiling machine that feeds sheets or pipes between two rotating rollers (beading rolls) to press linear indentations (beads) into the material. This significantly increases the structural rigidity of thin sheets or produces exact slip sockets for roof drainage components. While these machines used to be stationary and weighed a ton, today’s modern metalworker works completely on the move.

• Workshop precision directly on the job site: To adapt pipe segments or sheet metal panels directly at the installation site, businesses use innovative cordless systems. The BUSCHMANN TOOLS ACCUBEADER is a mobile beading machine powered simply by a standard cordless drill/driver. This allows reinforcing and joining beads to be rolled directly on the roof in a flash, with high precision and little effort.

Ice bead Additional reinforcement of the gutter bead (the front edge of the gutter) using an inserted round bar. This makes the gutter extremely stable against heavy snow pressure and ice loads in winter.

Sliding bevel An adjustable tool for transferring irregular angles onto sheet metal. Indispensable when fitting dormers, chimneys, or sloping wall connections.

Straight-cut snips / pelican snips Straight-cut snips (often referred to in technical jargon as pelican snips because of their characteristic head shape) are specialized hand shears for long, straight cuts in sheet metal work. Their key design advantage is that the tool head is angled so that the cut sheet metal is guided underneath the hand during cutting. This keeps the hand away from the sharp cut edge, and the sheet metal does not curl upward.

• Sample link: The STUBAI straight-cut snips 350 mm or the MASC | Stubai right-cut pelican snipsguarantee extremely clean cut edges and noticeably reduce the effort required.

Hip scissors / hip flashing The hip is the external, sloping line created where two roof surfaces meet - typical of a hipped roof. In sheet metal roofing, this line is covered with custom-made hip scissors or hip flashing. Since water runs off on both sides here, the seam connection must be made completely distortion-free to absorb thermal stresses.

Grooving iron / seam iron The grooving iron (often also referred to as a seam iron or prism grooving iron) is the classic forged hand tool used by sheet metal workers for manual straightening and forming work on sheet metal. It serves as a stable counterform (anvil) when folding over sheet metal edges, aligning irregular seams, or neatly working connections into tight valleys and cornices.

• Sample link: The FREUND grooving iron with prism (25x25mm) provides perfect guidance and repeatability during manual flanging thanks to its geometry.

Additions for timber construction / carpenters

Timber protection Timber protection is a key factor in preserving the value of timber structures indoors and outdoors. Whether for roof structures, façades, terraces, or carports, professional timber protection reliably safeguards against moisture, UV radiation, fungal attack, and wood pests. A distinction is made between constructive, chemical, and physical timber protection.

Nailing technology Nailing technology is a fundamental fastening method for timber and roofing components. It is used primarily for roof structures, battens, cladding, and timber joints. The correct nail type, driving depth, and angle are crucial to the stability of a roof.

• Example link: Modern roofing companies rely on pneumatic or battery-powered nail systems such as the HiKOKI 18V cordless collated nailer or the PREBENA hybrid nailer, which enable precise and time-saving work.

Bolted connection Bolted connections are one of the most important mechanical fastening methods in modern timber and roof construction. Unlike traditional timber joints (such as mortise-and-tenon joints), they enable extremely high load transfer, can be calculated precisely, and save substantial time on the construction site. Outdoors, only corrosion-resistant stainless steel screws or specially coated washer-head screws are used.

Roof bevel gauge / timber bevel gauge The roof bevel gauge (or timber bevel gauge) is a traditional, adjustable measuring tool used in carpentry and timber construction. It consists of a stock and a movable blade that can be fixed at any angle using a locking screw. It is used to measure existing angles (e.g. the roof pitch during the renovation of an older building) directly on the structure and transfer them accurately to the new structural timber.

• Example link: For traditional manual timber framing, the 300 mm Freund bevel gauge is the absolute standard tool for quickly marking out on the construction site.

Carpenter The carpenter (or timber framer) is the skilled tradesperson responsible for all timber construction work on a house. In roofing, their main tasks include building the roof structure, installing dormers, preparing timber structures, and installing timber cladding. The profession combines centuries-old traditions (such as travelling journeymanship) with state-of-the-art CAD and CNC technology.