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Welding of sub-roof membranes for pitched roofs
Reliable and economical

Leister offers an ergonomic and reliable solution for welding all plastic geomembranes on pitched roofs. The small and flexible hot-air welding machines from Leister make the processing of sheets more economical. The lightweight UNIDRIVE 500 proves its worth even on the steepest of pitched roofs. The larger UNIROOF AT and UNIROOF ST manage pitches of up to 30° with no problem at all. The COMET hot-wedge welding machine for sub-roof membranes has been specially developed for prefabrication purposes – using it makes subsequent work on the roof easier to do. Leister's ergonomically balanced hand welding tools ensure that work carried out in locations that are difficult to access and around awkward details remains a pleasure and does not become tiring.
  • Welding of lap seams on roofs with different pitches
  • Prefabrication of sub-roof membranes
  • Processing of connections and details
Leister has the solution
Simple and economical welding of sub-roof membranes with Leister's lightweight hot-air welding machines. A wide range of hand welding tools and matching accessories are available for working on details and in inaccessible locations.
  • Compact, small hot-air welding machines make the process more economical
  • Reliable, lightweight hand welding tools
  • Prefabrication makes subsequent laying on the roof easier
  • All Leister tools have a long service life and require little maintenance

Hot-air hand tools
The TRIAC AT is an intelligent hot-air hand tool for welding and shrinking plastics that is suitable for on-site use.
Handiness, reliability and versatility are the key arguments in favor of the TRIAC ST. Its two-component handle gives users a perfect grip, while the low weight of less than 1 kg ensures an optimum weight balance. The innovative motor and turbine design, combined with the heating element familiar from the TRIAC AT, enhance the value even more. More than 80 nozzles fit onto the TRIAC ST; these are also compatible with the TRIAC AT.

Hot-air Welder
The new UNIROOF AT automatic roof welder solves every problem. Close to the edge and service-friendly. Reliable and no modifications necessary: Close edge welding right out of the box.
The new UNIROOF ST roof welder combines closed-loop and open-loop and solves every problem close to the edge in a service-friendly way.

Semiautomatic hot-air tools
The UNIDRIVE 500 combines manual and automatic welding in a 4.5 kg lightweight and easy-to-handle automatic welder. Thanks to its overlap technology, it is ideal for welding all thermoplastic single ply membranes such as PVC and TPO.