How Much Roofing Paper Do I Need For 3 Square

The average bundle of shingles covers 33 3 ft 2 so three bundles of shingles are needed per square.

How much roofing paper do i need for 3 square.

It provides extra waterproofing to protect the wood until shingles are installed. For many years roofers used asphalt saturated felt under roofing shingles and it was historically available in two standard weights. To estimate roofing materials start by finding the total square footage of the roof and divide the number by 100 to determine the number of squares in the roof. The result is 240 and this means you would need 240 squares of shingles to cover that roof.

1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square. In order to know the appropriate amount of roofing felt to use the roof pitch will need to be calculated first. Roofing felt also known as tar paper is a roll of felt coverage is often used when constructing a roof. Since it takes 3 bundles of shingles to cover a square plan to purchase 3 bundles for each square.

15 pounds per hundred square feet and 30 pounds per hundred square feet. Then add 10 to the number to account for waste. Get the square footage of roof and divide it by 100 and it will give the number of squares you need and for every decimal number over 3 buy a bundle to achieve the amount of material. The 15 pound was for lighter weight projects while the 30 offered more heavy duty protection.