Coverage Of A Roll Of Roofing Felt

A typical roof has three layers a felt layer and two layers of overlapping shingles.

Coverage of a roll of roofing felt.

Rows are overlapped 2 inches not 6 inches. For instance a typical 2700 square foot home might require three rolls of synthetic underlayment compared to 14 rolls of no 30 felt to cover the same area. Safe synthetic underlayment is also advantageous for worker safety the surface of many synthetic roofing underlayments including those offered by owens corning features a variety. Roofing felt is sold by the roll.

There are two basic types of felt. Tri ply app granular cap sheet 39 625 in. Divide the area of your roof by the area of the felt rolls you plan to use and allow an approximate 10 extra for waste. Roll roofing is different.

When talking roofing materials. It has just one layer so it goes on fast and can be installed by a homeowner. A square is considered a 10 x10 area or a 100 square feet. So you have 1 900 square feet.

Net membrane roll for low slope roofing in white gaf tri ply app granule is a strong resilient gaf tri ply app granule is a strong resilient membrane that is suitable for new or reroofing projects as well as for use as flashing. 15lb and 30lb felt. 15lb felt covers 4. Roofing felt commonly called tar paper is an important component of any roofing system.

This membrane contains a core of nonwoven polyester mat that resists splits and tears. How many rolls of felt will you need. Using a roll of felt coverage or several rolls provides the roof with additional waterproofing and protects the wood sheathing of a roof until the installation of shingles is finished. One half the area of a roll of 15 felt which covers 432 square feet.

Rolls of felt are 36 wide x 144 long for 15 and 72 long for 30. A standard roll of 30 felt covers 216 square feet. Visit your local hardware store and ask for enough rolled roofing to fit the area of your roof.