Roofing Cement Before Applying Felt Paper

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

Roofing cement before applying felt paper.

A special underlayment may be recommended by the manufacturers of specific roofing product and hybrid products. Installing the roofing felt does take care but can go very quickly. Many builders use standard 15 pound roofing felt. Apply another layer of adhesive to the top for maximum waterproofing.

If this felt is more than a temporary waterproofing measure apply roofing mastic using a caulking gun. Hold the gun at a 45 degree angle with the nozzle pointed downwards. Some roofers prefer to attach felt underlayment with 1 inch roofing nails or special nails with plastic washers but most codes allow staples which are easier to drive. The roofing should overhang the eaves by inch except where you install drip edge flashing on top of the roofing along the rake edge.

Our opinion is that on new asphalt shingle tile fiber cement slate and many wood roofs most roofing contractors apply an underlayment membrane of roofing felt tar paper or fiber reinforced roofing felt. Felt labeled astm 15 meets specific standards and is the norm in many areas. 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. You can cover the surface of the felt with gravel for added strength.

Place the second row of roofing so the top edge aligns with the chalk line and the bottom edge covers the. Cover all nail heads with roofing mastic for long term roofing. Having a layer of roof felt will block the resin preventing it from staining or compromising your roof shingles. When you use certain types of wood to construct your deck there is sometimes a risk the wood will leach small amounts of resin over time as it ages.

You will need 1 10 gallon of lap not mastic cement for every roll and 2 pounds of roofing nails for every square. When patching a roof blister open the. Felt or building paper must be applied to walls properly to be effective. Cover the edges of the roof with strips of felt before laying out the final layer.

It s important that use the building paper that is recommended for your area. If additional coats are needed wait 12 hours before applying another coat. An underlayment of felt roofing is optional. Pull the trigger of the gun and move the nozzle around the circumference of each nail.

You will follow the same process as in step 2 for the last layer.