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Leister TRIAC AT Hot Air ToolVendor:LeisterThe Leister TRIAC AT is a digitally controlled heat gun for thermoplastic welding and forming. Set the temperature anywhere from 40 to 620 degrees and the digital control holds it there, even on site generators that would make a basic gun wander.Eco-Mode and a...
- $1,493.75
- $1,493.75
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Leister TRIAC ST Hot Air ToolVendor:LeisterThe Leister TRIAC ST is the analogue workhorse of membrane welding: 1600W, stepless heat from 40 to 700 degrees, and 0.99kg in the hand, which is why roofers pick it for a full day of overlap welding.No digital screen to fail: the Swiss analog...
- $1,121.69
- $1,121.69
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Leister UNIDRIVE 500 Semi-Automatic Welding MachineVendor:LeisterThe Leister UNIDRIVE 500 welds roof seams by machine at up to 4.5 metres a minute, around three times faster than doing it by hand, at a pressure your wrist cannot hold for an hour. At 4.5kg it still goes where the big machines...
- $6,362.25
- $6,362.25
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Frequently Asked Questions
What tools do I need to install a welded sheet membrane?
A hot-air heat gun for manual welding at corners, penetrations and detail work, and a semi-automatic welder for long straight seams. The Leister Triac AT and ST and the BAK RiOn and RiOn Digital are the heat guns. The Leister Unidrive 500 is the welder.
Which nozzle do I need?
Both BAK wide slot nozzles push-fit onto the 32 mm outlet of a trade hand welder. The 40 mm nozzle gives a wide band for overlap seams in sheet membrane. The 20 mm nozzle gives a narrow band for flashings, corners and repairs.
Can I use a heat gun for other waterproofing work?
No. A hot-air heat gun is for thermoplastic and PVC sheet-membrane systems only. It is not for liquid-applied membranes, cementitious coatings or self-adhesive bitumen sheets. Match the tool to the membrane.
What is the difference between a heat gun and a semi-automatic welder?
A heat gun is hand-held. The operator controls the speed and pressure. A semi-automatic welder like the Leister Unidrive 500 self-propels along the seam at a set speed for consistent welds on long runs. Most jobs use both.
Are these tools required for liquid membranes?
No. Liquid membranes are rolled or brushed on. Welding tools only apply to sheet membranes where seams must be heat-welded. You do not need a heat gun or welder for liquid-applied systems.
Can I hire these tools or do I need to buy them?
These are trade-grade tools for contractors who install welded sheet membranes regularly. Check with your supplier about hire if you are doing a one-off job.