roof felt paper 15 vs 30

Read customer reviews find best sellers. I have a low slope roof the shingle manufacture that im using says to doubling up on felt underlayment but it doesnt say whether to use 15 or 30I.

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The reason for the thicker felt is because the thinner 15 felt can rip.

. Felt Roof Deck Protection. It is still used as a cheap underlayment but shrinks and wrinkles if it get. The weight is the main difference between 15 and 30 felt papers.

30 or 15 Weight Felt. X 50 ft 150 sq. The thickness of roof paper felt 30 ensures that they wear at a slower rate than roof paper felt 15 which is thinner.

We normally use 15 on low pitched roofs and 30 on steeper roof. On re-sands down the road it also helps to keep. But always check on the shingle package.

The rule of thumb is to install 15 asphalt felt on pitches under 712. 15 Felt Roof Deck Protection. 30 will seal better to fasteners than 15.

15 is not asphalt saturated felt but rather paper like kraft paper that has a thin asphalt coating on it. I think the different weight really depends on the number of fasteners that will be penetrating. 30 years ago a 4sqr roll of 15.

It depends on the shingles regelar 3 tab shingles use 15 lb felt archatectual requires 30 lb felt and sheet metal requires 30 lb felt. While 15 is a good option for most roofing jobs 30 provides more protection and performance for steep roofs and flat roofs. The only reason we use 30 is because it is less susceptible to tearing when being walked on at a high.

Both are moisture barriers. Proudly Serving Los Angeles. Ad Browse discover thousands of brands.

If your roof does not. The weights have changed significantly since then. 30 felt is typically thicker stronger and may be less prone to tearing or.

Joined Jul 7 2012. No15 felt and No. For many years roofers used asphalt saturated felt under roofing shingles and it was historically available in two standard weights.

Plywood or OSB roof deck so 15 20 or 30 will. Felt paper is simply a moisture retarder not proofer. It also helps the installer slide the flooring in place and keeps down dust.

Felt underlayment is the older of the two and comes in 15 lb and 30 lb rolls. Start Your Project Sooner with Store Pickup. Historically 15 felt paper weighed 15 pounds while 30 felt paper weighed 30 pounds.

Felt roofing underlayment is typically available in two types. Contact Us Today For Hassle-Free Roofing. This means they tend to last longer than roof felt paper 15.

Modern 15 tears too easy we use 30 or one of the new synthetics on all sloped roofs. In my opinion felt paper is a vapor barrier plus keeps the oils in the shingles from leaching out and into the wood substrate ie. The big difference between the two types of felt underlayment is that 30 lb is thicker stronger and less.

Ad Professional and Reliable Roofing In Los Angeles. Ad Find the Right Material For Every Job. The 15 and 30 tar paper designators used to mean that a 100-foot roll of 36-inch wide tar paper would weigh either 15 or 30 pounds respectively depending on the thickness of the paper.

Home To Any Budget Home To Any Possibility. 30 felt is normally used on roof pitches over 712. 15 vs 30 Felt Paper.

Lowes Has Your Next Project Covered. 2 Sep 11 2014. For instance 15 felt papers are now about 80 pounds while 30 are around 16 pounds.

15 pounds per hundred square feet and 30 pounds per. However the original names 15 and 30 have remained.

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