Building Paper Under Siding

Should any water get past the siding properly installed felt.

Building paper under siding.

But to be effective it must be integrated with the flashing that follows in later stages of the job. Felt paper also commonly referred to as tar paper is an underlayment material applied to bare walls before siding is installed. I want to replace the tar paper but i can t find it at homedepot or lowes. The standard weather barrier used traditionally under wood vinyl and other siding materials is 15 pound felt.

Install flashings metal self adhesive or both as recommended by the window or door manufacturer or as required by local codes. This means for example having to slit the housewrap above windows to tuck under the upper leg of a metal cap flashing then taping the wrap to the flashing. Typically building paper is installed as soon as the sheathing is installed. I ve opened up houses built less than 5 years previous and the tyvek was shreaded like old newspaper.

I ll stick with tried and true felt paper. For stucco the standard is two layers of grade d building paper. I saw a new house with felt paper under the siding rather than tyvek. Perhaps recent damage to their siding showed no house wrap under their vinyl or they are working with a contractor who doesn t believe house wrap to be necessary.

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. Fortifiber 2 ply 162 sq. They were built in the 1950s and 60s the felt was in perfect condition. Protects against water intrusion.

Use tyvek over building felt under siding. Moisture will find its way into these wall systems by way of cracked mortar joints gaps or cracks in the surface of the material. Faq s acronym s terminology to tyvek or not to tyvek that is the question. I have seen literally hundreds of houses stripped of asbestos siding that had 15 felt under it.

When building exterior walls with stone stucco brick when building exterior walls with stone stucco brick cedar eifs or fiber cement siding it is important to use an effective rain screen system that will provide a means for drainage and ventilation. House wrap is indeed considered a necessity by the majority of contractors as well as housing authorities including local building and planning departments. Thd sku 154661. 60 minute building paper for use behind exterior wall cladding including stucco fiber cement siding brick vinyl and wood siding.