• leister triac st pro heat gun with carry case and angled nozzle on a white background
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The Flat Roofing Shop

Leister TRIAC ST Heat Gun - 120V & 240V

Leister TRIAC ST Heat Gun - 120V & 240V

£600.00 GBP
£600.00 GBP
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Professional Hot Air Tool for Heat-Weldable Roofing Membranes

The Leister TRIAC ST is a professional-grade hot air tool designed for welding heat-activated roofing membranes, including self-adhesive heat-weldable systems such as Resitrix.

Manufactured in Switzerland, the TRIAC ST is lightweight, balanced and built for long-term site use. Supplied with a Pro Angled Welding Nozzle and adaptor, it is ready for lap welding straight out of the case.

Available in 120V and 240V options.

Designed for Membrane Welding ▸

Resitrix and similar systems require:

  • Stable heat output
  • Controlled airflow
  • Consistent lap fusion
  • Reliable performance on site

The TRIAC ST delivers:

  • Temperature range up to approx. 700°C
  • Electronic temperature control
  • Optimised airflow for welding
  • Lightweight body (under 1kg)
  • Balanced ergonomic grip

It provides consistent weld quality across laps, upstands and detailing work.

120V vs 240V ▸

Both versions provide identical welding performance.

  • 120V – Suitable for site transformer supply (commonly used on regulated construction sites).
  • 240V – Standard domestic and workshop supply.

Select voltage based on site requirements.

Built for Professional Use ▸
  • Swiss-engineered construction
  • Durable heating element
  • Replaceable carbon brushes
  • Integrated heating element protection
  • Compatible with a wide range of Leister nozzles

The TRIAC ST is designed for long service life under regular roofing use.

Specification ▸
  • Model: Leister TRIAC ST
  • Voltage: 120V or 240V
  • Temperature Range: Up to approx. 700°C
  • Weight: Under 1kg
  • Supplied: Heat gun, Pro angled welding nozzle, adaptor, case
  • Origin: Swiss made
Summary ▸

The Leister TRIAC ST is a professional hot air welding tool for heat-activated roofing membranes such as Resitrix. Lightweight, durable and precise, it provides consistent lap welding performance for installers who require premium site equipment.

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