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.
Coverage of a roll of roofing felt.
A standard roll of 30 felt covers 216 square feet.
To apply rolled roofing you ll need your roof measurements a broom chalk to mark lines a razor blade to cut the material roofing cement nails and a hammer to hold down the material.
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.
15lb felt covers 4.
How many rolls of felt will you need.
There are two basic types of felt.
Visit your local hardware store and ask for enough rolled roofing to fit the area of your roof.
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.
Tri ply app granular cap sheet 39 625 in.
It has just one layer so it goes on fast and can be installed by a homeowner.
This membrane contains a core of nonwoven polyester mat that resists splits and tears.
One half the area of a roll of 15 felt which covers 432 square feet.
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.
When talking roofing materials.
Roll roofing is different.
15lb and 30lb felt.
Roofing felt is sold by the roll.
Roofing felt is sold in rolls and the product label will give information on the area contained.
A typical roof has three layers a felt layer and two layers of overlapping shingles.
Rolls of felt are 36 wide x 144 long for 15 and 72 long for 30.
Roofing felt commonly called tar paper is an important component of any roofing system.
The average roll of 15 pound roofing felt covers about 400 ft 2 or 4 squares while the average roll of 30 pound roofing felt covers about 200 ft 2 or 2 squares.
So you have 1 900 square feet.