When talking roofing materials.
15 lb roofing felt coverage.
For many years roofers used asphalt saturated felt under roofing shingles and it was historically available in two standard weights.
The difference between 15 lb and 30 lb roofing felt paper.
Organic dry felt is made from 100 post consumer recycled material.
A square is considered a 10 x10 area or a 100 square feet.
Roofing felt is rated based on the weight of a 100 square foot section with 15 and 30 pound felt being the most common.
Roofing calculator before laying down the roof pitch the space it will cover otherwise known as the roofing square needs to be measured.
One roofing square and 30 lb felt paper weighed 30 pounds per square.
Historically roofing felt paper was named for weight.
Felt roofing underlayment is typically available in two types.
36 in x 144 ft 432 sq ft felt roof underlayment item 10306 model fgur35 lays flatter heavy duty design minimizes the wrinkling that can occur with cheaper felts.
Organic dry felt is made from 100 post consumer recycled material.
Ft at menards send cancel mail in rebate is in the form of merchandise credit check valid in store only.
15lb felt covers 4.
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.
15 asphalt felt 3 x 144 roofing underlayment 432 sq.
15lb and 30lb felt.
You can see that only the first two courses of felt above the peel and stick ice water guard membrane seem to display a roughly half width exposure.
Felt paper is commonly produced with a certain number of recycled products and coated with asphalt.
The 15 pound was for lighter weight projects while the 30 offered more heavy duty protection.
Above that is an incomplete double coverage layer of 15 pound roofing felt.
The main advantage of using felt roofing underlayment is cost.
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.
So you have 1 900 square feet.
I ve marked in red the lower edge of each course of roofing felt.
There are two basic types of felt.
No 15 felt and no.