2 Ply Roofing Felt

Built up roof membrane 3 ply gravel surfaced.

2 ply roofing felt. 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. Ft sbs self adhering cap sheet roll for low slope roofing in slate. The standard approach for two ply roofing underlayment is to lap a 36 inch roll by 19 inches. This provides two plies across the entire roof with three plies at the headlap.

The first course starts with an extra 1 2 wide run. 30 felt type construction helps provide an extra layer of protection between your shingles and your roof deck not included heavy duty design lays flat to help minimize wrinkling asphalt saturation to help improve waterproofing ability to help prevent wind driven rain and water from other sources from infiltrating under your shingles and. Owens corning roofing and asphalt. Zinc roofing 1 6 lb m ft 2 7 8 kg m 2 copper asphalt composite shingle 4 2 lb m ft 2 20 5 kg m 2 asphalt roll roofing 1 1 lb m ft 2 5 4 kg m 2 felt tar and gravel roofing 3 ply 4 8 lb m ft 2 23 4 kg m 2 felt tar and gravel roofing 4 ply 5 3 lb m ft 2 25 9 kg m 2 felt tar and gravel roofing 5 ply 6 1 lb m ft 2 29.

Gaf shingle mate 36 in x 144 ft 400 sq ft felt roof underlayment. Owens corning roofing and asphalt. Owens corning roofing and asphalt. The lap is half the width of the roll plus one extra inch for headlap.

By gaf 4 101 02 piece. So anywhere along the gable end that you can see the felt you ll see two layers. Ft sbs self adhering cap sheet roll for low slope roofing in shakewood. The resisto two ply roofing system is guaranteed for 20 years against any manufacturing defect in the products.

Built up roof membrane 3 ply smooth surfaced. On 4 12 or greater slopes the balance of the roof shall be one layer of 15 felt. This warranty applies to low slope or near flat residential roofs up to 1 8 2 or 1 slope that use the outer perimeter instead of a drain to evacuate water. On roof slopes of 2 12 to 4 12 the remainder of the roof shall be two layers of 15 felt applied in shingle fashion or 1 layer of ice dam protection.

Built up roof membrane 4 ply gravel surfaced.