Purpose Of Felt On Roof

In addition to this it has been proven that roofing felt can actually prolong the life of your roof and help it endure the brutality of mother nature.

Purpose of felt on roof.

Well the original purpose for using roofing felt was to be a temporary waterproof roof whilst homeowners would have to build their own roofs. A layer of gravel or small stones is applied on top of the final coating of asphalt to protect the roof from the elements including ultraviolet uv rays and hail. Roofing felt protects the roof which means it ultimately protects your home. Shingles or shake can be nailed directly on top of the felt.

Sometimes called roofing felt underlayment roofing tar paper or roll roofing this is a layer of protection installed between the roof deck and the roofing shingles. There are many reasons to use roofing felt. That s when synthetic products started gaining in popularity. Here alternating layers of roofing felt usually fiberglass and hot applied asphalt are combined to create a long lasting roof system.

Roof felt products are sold in rolls. Roofing felt is a layer of tar paper installed beneath the shingles to provide a backup waterproof membrane in case of leakage. Asphalt saturated felt was the go to roofing underlayment until about 15 years ago. Commonly referred to as felt paper or tar paper common roofing felt is made of varying blends of cellulose natural plant fibers polyester bitumen or asphalt.

When homeowners would remove the shingles off their roof on a weekend the roofing felt would serve as a waterproof cover. Gaf shingle mate 36 in x 144 ft 400 sq ft felt roof underlayment. An adhesive side sticks to the roof deck or a waterproof membrane on top of the deck. It provides a barrier between the wood sheathing on the roof and the final roofing material.

Should water or snow be driven between shingles by high winds this under layer will provide valuable protection. Conversely felt underlayment is appropriate in conjunction with ice dam protection at eaves and other critical transitions in cold climates. The outer surface of the roof felt is like a sandpaper or carpet like surface. This method has been used for over one hundred years.

Architectural metal roofs with felt underlayment are best suited for buildings with proper slope and low moisture loads in dry or arid climates.