Felt labeled astm 15 meets specific standards and is the norm in many areas.
Roofing felt paper behind siding.
Fiber cement siding covered the felt paper.
They also promote quick drying allowing air to get behind any siding.
I have seen literally hundreds of houses stripped of asbestos siding that had 15 felt under it.
The homeowners immediately noticed a petroleum odor when for six years there was never a problem.
This is a good thing.
If you want vertical drainage with tar paper you have to add treated lumber strips on top of the tar paper.
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.
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.
Asphalt felt tar paper the standard requirement is type 1 felt meeting astm d 226 standards.
Felt paper also commonly referred to as tar paper is an underlayment material applied to bare walls before siding is installed.
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.
Felt or building paper must be applied to walls properly to be effective.
A paul fisette director of building materials and.
Nowadays low cost 15 felt can weight as little as 8 to 12 pounds per square 100 sq.
The siding was improperly installed and was removed in early november of 2018.
The siding contractor then covered the felt paper with certawrap a modern air barrier.
Our house was built about seven years ago.
I ve opened up houses built less than 5 years previous and the tyvek was shreaded like old newspaper.
For example an ice dam or roof leak may allow liquid water to get behind the felt or housewrap.
The paper requirement is typically omitted for other types of siding when they re installed over rated structural sheathing.
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.
They were built in the 1950s and 60s the felt was in perfect condition.
Tar paper does not offer this.
For stucco the standard is two layers of grade d building paper.
Should any water get past the siding properly installed felt paper.
I ll stick with tried and true felt paper.
Install pieces in the correct order and make cuts carefully so any moisture can travel downward at all points without slipping under the wrap.
I need to do some repairs under my siding from a window leak.
