How Much Felt Paper For Roof

Installing a roof is much more than just nailing shingles onto some boards.

How much felt paper for roof.

It starts with installing solid decking usually plywood or oriented. The 15 pound was for lighter weight projects while the 30 offered more heavy duty protection. Roll saturated felt underlayment 15 astm 4869 type i is an authentic asphalt 15 astm 4869 type i is an authentic asphalt saturated organic felt underlayment is used as a breathable secondary weather resistant barrier when applied over the roof deck prior to the installation of the primary roofing product. Always double check with the roofing calculator to make sure that you have enough felt to cover the entire area of the roof.

15 pounds per hundred square feet and 30 pounds per hundred square feet. Estimating felt underlayment tar paper 1 find the square footage of the roof. One roofing square equals to 100 square feet. Rolls of felt coverage for roofs is sold in rolls that are one square each.

Therefore use a 2 inch overlap for roof felt. One square is equal to 100 square feet. Although overlapping felt more than 2 inches may provide extra protection the 2 inch overlap is adequate for most applications and will provide an excellent roof. Chalk lines should be snapped 33 5 8 above the eave line.

Measure the length and width of each portion of the roof multiply length by width for each plane and add the planes together for the total square footage. Before laying roof felt all rotten decking must be replaced. Drip edges on the eaves any valley liners and all flashing should be installed before the tar paper is laid. Organic dry felt is made from 100 post consumer recycled material.

Roofing felt paper material prices. United roofing gator skin synthetic roof underlayment 42 in x 285 8 ft 1 000 sq ft synthetic roof underlayment. 15 astm 4869 type i is an authentic 15 astm 4869 type i is an authentic asphalt saturated organic felt underlayment is used as a breathable secondary weather resistant barrier when applied over the roof deck prior to the installation of the primary roofing product. For many years roofers used asphalt saturated felt under roofing shingles and it was historically available in two standard weights.

How to install felt underlayment for a new roof.