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Roofing Tips: How to Heat Weld Membrane Seams

Legacy Flat Roofing & Sheet Metal How To Video: Heat Welding Seams

On a residential home it’s always best to avoid using torches or hot asphalt. So our main practice is to use a technique of using intense heat to weld seams together. To do this you need a leister gun, which blows hot air, and a 3 inch roller. And we use the heat and the roller to adhere to capsheet layers together.

If you are doing this right you will see some of the asphalt ‘bleed’ out the side of the capsheet which means you are getting a watertight seal. If you don’t have that bleeding you will get water coming back in underneath.

Legacy Flat Roofing & Sheet MetalServing all of SouthWestern Ontario: Windsor, Chatham, Sarnia, London, Woodstock, Kitchener, Cambridge, Waterloo, Hamilton, Burlington, Brampton, Toronto, Mississauga, Guelph, St. Thomas