How To Torch Felt A Roof

This is done to ensure a flat surface for the roof felt.

How to torch felt a roof. The top membrane sheet to a torch down roofing system is a smooth cap sheet. In a two layer torch down roof the system is complete at this point. Move the nozzle across the flashing to coat them in an even opaque layer of primer. Taking the time to properly prepare the sheathing will make all the difference in how quickly and easily the felt paper is installed.

Torch on felt bitumen system technology includes sbs and app modified torch applied roofing systems. Make sure you choose something compatible with torch down roofing. You will also find liquid primers. To apply the primer hold the spray nozzle about 6 in 15 cm above the flashing.

This will tell you how much roofing felt you need to lay. Once you have aligned it measure and trim to the correct size with a sharp knife. Once it is cut to the correct size start at the centre of the sheet and work towards one of the edges placing nails at random intervals. What is torch on roofing felt torch on roofing or torch down roofing as it is also known is a flat roof covering solution that involves three layers of modified bitumen felt melt welded onto the roof surface and each other with the use of a blowtorch to create an impenetrable waterproof seal.

The felts are sold as a roll and applied using a blow torch which melts the back of the felt onto the surface. Also you will need to remove any old felt on the roof as well as any nails or roof staples. As it is rolled out the roofing professional will use a torch to heat the bottom of the cap to the top of the base sheet. At the gutter edge should be what s known as a welted drip edge.

These thick layers of roofing felt are installed by heating the back of the felt with a butane torch and then carefully applying it to the roof. Sps is generally easier to install as it requires less heat. Systems are available in a wide choice of colours to best suit a project. Installing the roofing felt does take care but can go very quickly.

When the two layers are pressed together they form a seal.