SIEVERT - Thermoweld 40 400V | Automatic welding machine
SIEVERT - Thermoweld 40 400V | Automatic welding machine
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SKU: SKU:299401
Frequently Asked Questions
Für welche Arbeiten ist der Thermoweld 40 geeignet?
Wofür ist die konstante Temperatur bis 620 °C im Alltag nützlich?
Ist der Schweißautomat auch für unterschiedliche Materialstärken geeignet?
Ist das Gerät für den Baustelleneinsatz ausgelegt?
Ist der Thermoweld 40 eher für professionelle Anwender gedacht?
✔ 40 mm professional welding machine for PVC & TPO: perfect for precise overlap seams on flat roofs
✔ Constant temperature up to 620 °C: precise control for safe, repeatable seams
✔ Continuously adjustable speed: 0.5–14 m/min for maximum control depending on the material
✔ Robust & jobsite-ready: 42 kg weight plus additional weights for optimal welding pressure
✔ Designed & made in Europe: Developed in Sweden 🇸🇪, manufactured in Switzerland 🇨🇭: uncompromising quality for professional roof waterproofing
Your welding expert for reliable PVC and TPO seams
With the SIEVERT Thermoweld 40 400V automatic welding machine, you get a genuine professional tool for welding roofing membranes cleanly, watertightly and durably – no guesswork, just maximum process reliability. Consistent seam quality is essential, especially on large flat roof areas: constant temperature, steady movement and controlled pressure. That’s exactly what the Thermoweld 40 is designed for.
The automatic welding machine has a 40 mm welding width and is ideal for PVC and TPO membranes. You can precisely adjust the temperature, airflow and speed to suit the material, substrate and weather conditions. This gives you repeatable results from the first membrane to the last. Compared with a hand torch or manual hot-air welding, you save time, reduce sources of error and significantly improve seam reliability.
Use in everyday roofing work
Position the Thermoweld automatic welding machine along the overlap, align it carefully with the seam and select the settings according to the membrane and outdoor temperature. The welding process then proceeds under control along the seam: hot air activates the surface, while the defined pressure reliably bonds the layers.
For details, connections or tight areas, pair the machine with hand tools as needed – for example, a suitable torch/hot-air tool, a pressure roller and a seam probe. This makes the Thermoweld a key part of modern roofing supplies and a true efficiency booster on the jobsite.
Important technical details
- Voltage: 400 V
- Power: 5.500 W
- Welding width: 40 mm
- Temperature range: 20–620 °C
- Airflow: 250–500 l/min
- Speed: 0.5–14 m/min
- Weight: 42 kg
- Cable length: 5 m (CEE 16A)
- Application: PVC and TPO roofing membranes
Order now from the roofing shop
If you’re looking for a robust roofing tool for precise seams, find the Thermoweld 40 400V at the roofing shop from your Roof specialist Roofify – for professional waterproofing that matters on the roof.
Video: Sievert Thermoweld - Next Generation Welding. Simplified.
Can't find the product you're looking for? Contact us - we'll make it happen. 📧 sales@roofify.de
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