Old Roof Felt

Roofing felt isn t always necessary when using shingles.

Old roof felt. It is also a requirement under many building codes. Residential and commercial roofing shingles slate roof ventilation roof underlayments asphaltic and tpo roof membranes. Item 656632 model 0903000. Gaf shingle mate 36 in x 144 ft 400 sq ft felt roof underlayment.

Including removal of old felt and failed decking installation of 100 mm celotext between ceiling rafters new deck in 22mm osb3 and the glass fibre covering. In the good old days it was often doubled up to help resist ice dams now delt with by ice and water shield. Remove old felt from the roof with your hands and a putty knife. For pieces that aren t coming loose press a putty knife underneath it.

Actually i attended a roof seminar 10 yrs ago or so and they stressed removing the old felt their theory was the old felt acts like a dry sponge and removes the good properties from the new application. As mentioned if you are replacing a roof the felt is likely to come off as part of the strip off. Apply pressure and chisel away at it until it comes loose. For more than 25 years organizations such as the national roofing contractors association nrca and the canadian asphalt shingle manufacturer s association casma have included roofing felt in their roofing and waterproofing recommendations.

I m building an addition to an early 1930s one story home with a hip roof. It s created by saturating paper or fiberglass mat with asphalt. What does this old house do in a situation like this. Grab loose pieces of felt and pull them off the roof with your hands.

Felt roofing underlayment is one of the oldest types of roofing underlayment. In the industry go overs. Im not sure i buy into this thinking the whole way. The home we re buying has two layers of composition shingles and the seller assures us that the new layer is only 1 year old.

The existing house has a metal tile roof with a stamped pattern. No 15 felt and no. Sources for old roofing products photo by courtesy of anr roofing. Metre felt roof with fibre glass.

4 or 5 years ago it cost us 6k ish for a 13 x 4 m 52 sq m flat roof in fibre glass. Felt is often used on wood shingle shake roofs and there is quite a bit of overlap.