Roofing Felt Layers

There needs to be an overlap in the felt to help increase the water tight quality.

Roofing felt layers.

So anywhere along the gable end that you can see the felt you ll see two layers. Installing the roofing felt does take care but can go very quickly. Assuming your roofing contractor is using standard 36 wide 15 roofing felt double coverage means that each layer of felt put down across the roof laps 19 over the upper half of the previous course. The actual process of putting down the underlayment will be one of the fastest parts of the entire roofing process.

Roofing felt as usually made consists of two or more usually three layers of felt paper which have been separately saturated with with coal tar pitch and pressed together. Paint a thin layer of adhesive over the first felt layer. In northern climates ice or snow dams are another common. For decades roofers have fitted a layer of felt over a roof s sheathing or roof deck before installing shingles.

Recycled paper is processed into a roll. The first course starts with an extra 1 2 wide run. The layers are thus coated by passing them in extended webs through a tank of hot pitch. Anderson tecnatorch sbs torch on mineral felt capsheet is used as the final layer of the felt roofing process.

Wind driven rain or snow can trap water under your shingles putting your roof deck and inner residence at risk of moisture. Cut it to size with your utility knife and place it over the second layer. Align this layer with the. You will be placing the second layer of felt over this.

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. Taking the time to properly prepare the sheathing will make all the difference in how quickly and easily the felt paper is installed. Be sure that there are 2 inches of overlap with the previous layer and that some felt covers the edge of the roof. It provides backup protection in the event of ice or water damage.

Roofing felt offers an additional layer of protection against the elements. Manufacturing organic asphalt saturated felt underlayment is a pretty straight forward process. It s available in rolls that are 8m long and 1m wide with a thickness of 4 2mm mineral or 3 8mm sand. Asphalt felt is still the product of choice for roofers who are drying in and installing a finished roofing with only short exposure to the elements in between.

Now you are ready to roll out the third layer of felt. Of course how many rolls you need will depend on the size of the roof so ensure you measure correctly. Leave the top portion of the paper loose. A third layer of felt needs to be placed.

Why use roofing felt paper.