15 Lb Roofing Felt Vs 30lb Felt

What is roofing felt.

15 lb roofing felt vs 30lb felt.

Historically roofing felt paper was named for weight. Felt roofing underlayment is typically available in two types. Synthetic roof underlayment vs. Generally speaking roofing felt is a felt paper that is soaked in asphalt and other water resistant compounds to produce a membrane.

On steep roofs the 15 rips easily under foot. Felt paper is commonly produced with a certain number of recycled products and coated with asphalt. Plywood or osb roof deck so 15 20 or 30 will work for any shingle roof the type i recommend depends on roof slope. 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.

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. 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. Labor is higher for peel and stick. Organic dry felt is made from 100 post consumer recycled material.

The best weight for roofing felt is the 30 pound product because it provides thicker and. The difference between 15 lb and 30 lb roofing felt paper. 15 lb felt paper weighed 15 pounds per 100 sq. On lower slopes i feel more comfortable with the thicker felt.

No 15 felt and no. Of course it is a bit more technical than that but this is the basic idea behind how felt works. Barricade roof underlayments have all of the benefits of both asphalt saturated felt and synthetic underlayments. The main advantage of using felt roofing underlayment is cost.

A 66 foot roll of synthetic underlayment will set you back about 86. In my opinion felt paper is a vapor barrier plus keeps the oils in the shingles from leaching out and into the wood substrate i e. One roofing square and 30 lb felt paper weighed 30 pounds per square. 30 felt is typically thicker stronger and may be less prone to tearing or ripping off during installation or weather events.

Felt is commonly sold in either 15 or 30 rolls measuring 36 inches wide. However an added advantage of barricade underlayments is they save time and money because they can be installed quicker than standard 36 wide felt underlayments. Asphalt saturated heavy duty roofing felt is available in 15 and 30 pound weights.