Asphalt saturated heavy duty roofing felt is available in 15 and 30 pound weights.
15 lb roofing felt vs synthetic.
What is roofing felt.
When most people think of roofs they typically think of shingles or metal roofing.
15 lb felt paper weighed 15 pounds per 100 sq.
Of course it is a bit more technical than that but this is the basic idea behind how felt works.
Know that summit synthetic underlayment has a uv coating that allows it to be left uncovered on a roof deck for up to 180 days.
Coated woven synthetic roofing.
But what some may not know is there s another layer of protection directly on top of the roof deck and under the roof covering that performs a critical role in protecting your home from moisture damage.
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 felt and synthetic underlayments are products installed.
Synthetic which is more costly than traditional felt has other benefits too.
Synthetics are not a food source for mold like paper based 15 and 30 felt paper.
Historically roofing felt paper was named for weight.
The difference between 15 lb and 30 lb roofing felt paper.
One roofing square and 30 lb felt paper weighed 30 pounds per square.
Felt is commonly sold in either 15 or 30 rolls measuring 36 inches wide.
Organic dry felt is made from 100 post consumer recycled material.
Rolls 48 wide as compared to 30 felt 2 sq.
Synthetic underlayment come in 10 sq.
Generally speaking roofing felt is a felt paper that is soaked in asphalt and other water resistant compounds to produce a membrane.
Synthetic roof underlayment vs.
Felt paper is commonly produced with a certain number of recycled products and coated with asphalt.
The biggest drawback to synthetic underlayment is the cost.
Synthetic underlayment will not rot buckle or crack and provides slip resistance for workers on the roof deck.
As of publication you can purchase a 72 foot roll of 30 pound roofing felt for around 15.
Samples tested in accordance with astm d3274.
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.
