Building Paper Under Siding

They were built in the 1950s and 60s the felt was in perfect condition.

Building paper under siding.

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. Use tyvek over building felt under siding. Fortifiber 2 ply 162 sq. Faq s acronym s terminology to tyvek or not to tyvek that is the question.

I saw a new house with felt paper under the siding rather than tyvek. But to be effective it must be integrated with the flashing that follows in later stages of the job. Nowadays low cost 15 felt can weight as little as 8 to 12 pounds per square 100 sq. Should any water get past the siding properly installed felt.

Felt paper also commonly referred to as tar paper is an underlayment material applied to bare walls before siding is installed. 60 minute building paper for use behind exterior wall cladding including stucco fiber cement siding brick vinyl and wood siding. I have seen literally hundreds of houses stripped of asbestos siding that had 15 felt under it. For stucco the standard is two layers of grade d building paper.

Moisture will find its way into these wall systems by way of cracked mortar joints gaps or cracks in the surface of the material. Install pieces in the correct order and make cuts carefully so any moisture can travel downward at all points without slipping under the wrap. Install flashings metal self adhesive or both as recommended by the window or door manufacturer or as required by local codes. 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. Felt or building paper must be applied to walls properly to be effective. I want to replace the tar paper but i can t find it at homedepot or lowes. Thd sku 154661.

The standard weather barrier used traditionally under wood vinyl and other siding materials is 15 pound felt. Protects against water intrusion. House wrap is indeed considered a necessity by the majority of contractors as well as housing authorities including local building and planning departments. 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.