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Automatic welders, hot air hand tools, tensiometers

Efficiency, quality, and reliability of the highest standard

Plastic Welding Flat Roof
VARIMAT V2

Leister automatic welders and hot air hand tools are the first choice when roofs need sealing. Efficiency, quality, and reliability of the highest standard and a global reputation!

Economical and safe lap welding of plastic single ply membranes.
Leister offers economical and ergonomic hot air welders for lap welding of thermoplastic single ply membranes. The tried-and-tested VARIMAT V2 automatic welder delivers a safe and quick joint thanks to its patented spherical roller, nozzle with high preheating capability, and powerful hot air blower. Flat roofs are made leaktight quickly and safely thanks to welding parameters which can be monitored and modified – even in adverse weather conditions. The easy-to-handle UNIROOF AT/ST really proves its worth in locations which are difficult to access, in the immediate vicinity of walls, for smaller roofs, and for narrow radii. The small, semi-automatic TRIAC DRIVE AT welding machine is suitable for boarding and channels. Before the base seam is actually welded, the connection quality can be checked using the EXAMO tensiometer and accessories. Leister offers tried-and-tested hand welding tools for all precision work, above all the TRIAC ST/AT, which impresses users with its robustness and reliability.

Reliability:
Roofers dream of a welding machine for which failures on the construction site are kept as low as possible. There is nothing more frustrating than a machine which fails during welding. Failures mean a lot of work and additional costs for roofers. They need to be able to rely on their welding equipment. Even with a generator, the welding machines must function reliably.

Leister has a full range of products to solve the problem!

The benefits of Leister at a glance:

Robust appliance components, outstanding performance and service

Robust device components

  • Low service costs with maintenance-free brushless drive and blower motors
  • Durable heating elements
  • Corrosion-resistant weights


Performance

  • High welding speeds and top performance
  • Automatic welders with maximum flexibility cuts out steps in the process
  • Low failure rates at the construction site (even with a generator)


Service

  • Support and device demonstration by our field service representatives
  • Everything available from a single source thanks to a wide product range
  • Tight distribution network with short delivery times 
  • Welding window service
  • Long spare parts guarantee when discontinued after 7 years
  • Quick repair and service
  • We offer the option to rental welding equipment
Why Leister

Core competencies which set us apart from our competitors!

Leister has core competencies which set it apart from its competitors! This ensures the quality that you need:

 

  • Heating elements with double the lifespan compared to those of our competitors
  • In-house software development creates added value such as the ability to save welding parameters and the LQS app for generating automatic reports
  • Chromium steel nozzles with high preheating capability and safe welding process
  • Maintenance-free, brushless fan motors with long lifespan

 

You can rely on Leister to make sure that you don't experience any costly equipment failures while up on the roof.

Hot-air Welder

VARIMAT V2

With up to 12 m/min welding speed polymer roofing membranes can be welded more rapidly.

VARIMAT V2 Hot-air welder

UNIROOF AT

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.

Saldatrice automatica ad aria calda - UNIROOF AT

UNIROOF ST

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. Without converting.

Saldatrice automatica ad aria calda - UNIROOF ST

Semiautomatic hot-air tools

TRIAC DRIVE AT

The TRIAC DRIVE AT are up to three times faster than manual welding. The unique, semiautomatic welding tool.

hot-air welder TRIAC DRIVE AT

TRIAC DRIVE AT with guiding help

The TRIAC DRIVE AT with welding guide, inside nozzle or outside nozzle, the unit is suitable for all roofing and tunneling applications and other areas of use

Hot-air welder TRIAC DRIVE AT with guide help

Automatic Welders

TRIAC DRIVE ST

More consistent and up to three times faster than manual welding with the TRIAC DRIVE ST.

TRIAC Drive ST

Hot-air hand tools

TRIAC AT

The TRIAC AT is an intelligent hot-air hand tool for welding and shrinking plastics that is suitable for on-site use.

Leister TRIAC AT Heissluft Handgerät

TRIAC ST

Handiness, reliability and versatility are the key arguments in favor of the TRIAC ST

Leister Hot-air Handtool TRIAC ST

HOT JET S

As the most compact hot-air hand tool from Leister, the HOT JET S’ low weight of 600 grams (1.3 lbs.)--including cord and slim handle--ensures high-powered, fatigue-free welding.

Leister Hot-air Handtool HOT JET S

Testing instruments

EXAMO USB

EXAMO USB performs tests at the construction site – quick, reliable and uncomplicated.

EXAMO Testing instrument

VACUUM BELL

Testing bell for proving the tightness of double overlap welding seams in civil engineering

VACUUM BELL

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