Roofing Felt Paper Behind Siding

Basically all model codes agree on the need for a weather resistant barrier paper usually specified as 15 felt or grade d kraft paper behind stucco brick stone and other porous veneers.

Roofing felt paper behind siding.

Our house was built about seven years ago. The short answer is that felt paper is fine as a weather resistant barrier behind vinyl siding and will not cause a problem if the siding is installed correctly. A paul fisette director of building materials and. This is a good thing.

The standard weather barrier used traditionally under wood vinyl and other siding materials is 15 pound felt. They also promote quick drying allowing air to get behind any siding. The homeowners immediately noticed a petroleum odor when for six years there was never a problem. The paper requirement is typically omitted for other types of siding when they re installed over rated structural sheathing.

Item 656632 model 0903000. Tar paper does not offer this. Nowadays low cost 15 felt can weight as little as 8 to 12 pounds per square 100 sq. In fact many builders disagree on the effectiveness of house wraps altogether and while some builders will only install 15 pound asphalt saturated felt paper underneath exterior siding others swear by plastic fabric house wraps such as typar or tyvek.

I need to do some repairs under my siding from a window leak. Siding applied directly over tar paper creates a sandwich effect and can trap water between the siding material and the tar paper. The siding was improperly installed and was removed in early november of 2018. Felt labeled astm 15 meets specific standards and is the norm in many areas.

But because the vinyl siding covers the felt paper it is shielded from the sun and never gets hotter than the temperature of the siding from solar gain. If you want vertical drainage with tar paper you have to add treated lumber strips on top of the tar paper. Should any water get past the siding properly installed felt paper. Many builders use standard 15 pound roofing felt.

The siding contractor then covered the felt paper with certawrap a modern air barrier. Gaf shingle mate 36 in x 144 ft 400 sq ft felt roof underlayment. Felt or building paper must be applied to walls properly to be effective. Felt paper also commonly referred to as tar paper is an underlayment material applied to bare walls before siding is installed.

Install pieces in the correct order and make cuts carefully so any moisture can travel downward at all points without slipping under the wrap. Fiber cement siding covered the felt paper.