How To Torch Felt A Roof

Taking the time to properly prepare the sheathing will make all the difference in how quickly and easily the felt paper is installed.

How to torch felt a roof.

The felts are sold as a roll and applied using a blow torch which melts the back of the felt onto the surface. 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. 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.

You must remove any rotted pieces of wood on the roof and replace them with your plywood planks. 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. The correct process for a built up torch on felt system should comprise of 3 layers one base layer manually fixed to the roof usually nailed followed by one torch on underlay with the top finished with a torch on mineral cap layer. In a two layer torch down roof the system is complete at this point.

You will also find liquid primers. Also you will need to remove any old felt on the roof as well as any nails or roof staples. This is done to ensure a flat surface for the roof felt. When the two layers are pressed together they form a seal.

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. Start at the lowest edge of the roof and roll out the felt at right angles to the direction of the full. Sps is generally easier to install as it requires less heat. Move the nozzle across the flashing to coat them in an even opaque layer of primer.

Installing the roofing felt does take care but can go very quickly. Systems are available in a wide choice of colours to best suit a project. Make sure you choose something compatible with torch down roofing. The top membrane sheet to a torch down roofing system is a smooth cap sheet.

Torch on felt bitumen system technology includes sbs and app modified torch applied roofing systems.