Building Paper Under Siding

Protects against water intrusion.

Building paper under siding. Should any water get past the siding properly installed felt. 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 have seen literally hundreds of houses stripped of asbestos siding that had 15 felt under it. Thd sku 154661.

I ll stick with tried and true felt paper. House wrap is indeed considered a necessity by the majority of contractors as well as housing authorities including local building and planning departments. Felt or building paper must be applied to walls properly to be effective. 60 minute building paper for use behind exterior wall cladding including stucco fiber cement siding brick vinyl and wood siding.

I want to replace the tar paper but i can t find it at homedepot or lowes. For stucco the standard is two layers of grade d building paper. Nowadays low cost 15 felt can weight as little as 8 to 12 pounds per square 100 sq. 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.

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. Fortifiber 2 ply 162 sq. I ve opened up houses built less than 5 years previous and the tyvek was shreaded like old newspaper.

Use tyvek over building felt under siding. 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. Typically building paper is installed as soon as the sheathing is installed. The standard weather barrier used traditionally under wood vinyl and other siding materials is 15 pound felt.

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. Felt paper also commonly referred to as tar paper is an underlayment material applied to bare walls before siding is installed. But to be effective it must be integrated with the flashing that follows in later stages of the job. 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.