Tar Paper Behind Vinyl Siding

Siding applied directly over tar paper creates a sandwich effect and can trap water between the siding material and the tar paper.

Tar paper behind vinyl siding.

By chris baylor felt paper also commonly referred to as tar paper is an underlayment material applied to bare walls before siding is installed. Faq s acronym s terminology to tyvek or not to tyvek that is the question. Should any water get past the siding. The irc 2000 code and our building dept.

Tar paper does not offer this. 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. If you want vertical drainage with tar paper you have to add treated lumber strips on top of the tar paper. Get home building tips offers and expert advice in your inbox.

Its primary purpose is to prevent air and water leaks that may have seeped past the vinyl exterior. Use tyvek over building felt under siding. Sign up for eletters today and get the latest how to from fine homebuilding plus special offers. 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.

I want to replace the tar paper but i can t find it at homedepot or lowes.