Felt Paper Under Cedar Siding

Nowadays low cost 15 felt can weight as little as 8 to 12 pounds per square 100 sq.

Felt paper under cedar siding.

Felt paper also commonly referred to as tar paper is an underlayment material applied to bare walls before siding is installed. Skip sheathing strapping is not amenable to continuous underlayment. Cedar shakes a stylish and sophisticated roofing material. 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.

On a sidewall installation with cedar shingles sawn not split like shakes over solid sheathing interwoven felt is unnecessary as long as joints are offset at least one inch laterally. A continuous felt not plastic wrb is all that s required. Above was my post to demon now there are people here who say you can t use tyvek under cedar because of the tanins in the cedar will eat away at the tyvek. Consequently a high quality house wrap like barricade building wrap saves money and time over asphalt felt paper by reducing the need for repairs during the construction process.

Should any water get past the siding properly installed felt paper. I ve opened up houses built less than 5 years previous and the tyvek was shreaded like old newspaper. Tar paper also known as building felt is tar impregnated paper. It is an age old choice as a weather barrier under roofing and siding.

Cedar shakes tend to be on the expensive side compared to asphalt shingles or concrete tile. For stucco the standard is two layers of grade d building paper. I have seen literally hundreds of houses stripped of asbestos siding that had 15 felt under it. They also require maintenance on a more frequent basis but nothing too drastic.

I ll stick with tried and true felt paper. They were built in the 1950s and 60s the felt was in perfect condition. This underlayment is an important line of defense against moisture penetration.