How To Torch Felt A Roof

Move the nozzle across the flashing to coat them in an even opaque layer of primer.

How to torch felt a roof.

At the gutter edge should be what s known as a welted drip edge. When the two layers are pressed together they form a seal. Start at the lowest edge of the roof and roll out the felt at right angles to the direction of the full. In a two layer torch down roof the system is complete at this point.

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

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. Once you have aligned it measure and trim to the correct size with a sharp knife. Sps is generally easier to install as it requires less heat. You will also find liquid primers.

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. Systems are available in a wide choice of colours to best suit a project. 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. You must remove any rotted pieces of wood on the roof and replace them with your plywood planks.

To apply the primer hold the spray nozzle about 6 in 15 cm above the flashing. This is done to ensure a flat surface for the roof felt. This will tell you how much roofing felt you need to lay. Torch on felt bitumen system technology includes sbs and app modified torch applied roofing systems.

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.