Once the shingles are on the weight of the felt matters very little.
15 vs 30 pound roofing felt.
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.
No 15 felt and no.
In the old days common felt was 15 lb felt and 30 lb felt and a roll of the first held 4 squares and weighed 60 lbs while a roll of the second held 2 squares and weighed 60 lbs.
Felt has a 36 in.
30 is better for protecting your home during the re roofing process.
A high quality fiberglass 15 or a standard 30 will do this very well.
On steep roofs the 15 rips easily under foot.
15 lb felt paper weighed 15 pounds per 100 sq.
Of coverage for residential and commercial roofing projects.
30 felt is typically thicker stronger and may be less prone to tearing or ripping off during installation or weather events.
The difference between 15 lb and 30 lb roofing felt paper historically roofing felt paper was named for weight.
Width and a 144 ft.
Unrolled length that combine to provide over 430 sq.
30 was used as a base sheet for built up roofing and underlayment under slate tile and shingles.
Felt paper is commonly produced with a certain number of recycled products and coated with asphalt.
If 100 the typical upgrade cost to go from 15 to 30 is going to blow a sale for you you are doing something wrong.
No doubt about it.
Because it s thicker and stronger.
Roofing felt comes in large rolls and installs in horizontal rows starting at the lower edge of the roof with each subsequent row overlapping the previous one.
This gardner asphalt 15 432 sq.
If you experience high winds and some shingles get blown off the felt will protect your home until repairs can be made.
15 came perforated for use as a ply sheet for built up roofing use and non perforated.
Organic dry felt is made from 100 post consumer recycled material.
One roofing square and 30 lb felt paper weighed 30 pounds per square.
On lower slopes i feel more comfortable with the thicker felt.
30 pound roofing felt it is not paper it s made from either fiberglass or polyester that s been bound together with asphalt costs the same per roll as 15 pound felt but there are 216 square.