Tar Paper Under Vinyl Siding

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.

Tar paper under vinyl siding.

Tar paper does not offer this. I want to replace the tar paper but i can t find it at homedepot or lowes. I saw a new house with felt paper under the siding rather than tyvek. Felt paper also commonly referred to as tar paper is an underlayment material applied to bare walls before siding is installed.

Nowadays low cost 15 felt can weight as little as 8 to 12 pounds per square 100 sq. What are some of the negatives of using black paper opposed to tyvek under vinyl siding. Use tyvek over building felt under siding. This column was inspired by a phone consultation i did with a homeowner whose house was covered with tar paper in 2012 when it was built.

This is a time intensive process and requires all sorts of skill. If you want vertical drainage with tar paper you have to add treated lumber strips on top of the tar paper. You must design a drainage plane that keeps water out. Siding applied directly over tar paper creates a sandwich effect and can trap water between the siding material and the tar paper.

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. Its primary purpose is to prevent air and water leaks that may have seeped past the vinyl exterior. Felt paper under house siding. To sum it up house wrap is a lightweight paper like material that is most often used to completely cover the house directly on top of the sheathing and behind the vinyl siding.

The irc 2000 code and our building dept. Vinyl siding allows for lots of air movement because of the manner in which the siding is designed and installed. Basically putting tar paper or approved housewrap on the exterior walls before siding is installed is the first step to build an effective redundant barrier system. Faq s acronym s terminology to tyvek or not to tyvek that is the question.

Proper installation is required to make this system work. Installing foam board insulation under vinyl siding today. The standard weather barrier used traditionally under wood vinyl and other siding materials is 15 pound felt.