By chris baylor felt paper also commonly referred to as tar paper is an underlayment material applied to bare walls before siding is installed.
Tar paper behind 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.
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Its primary purpose is to prevent air and water leaks that may have seeped past the vinyl exterior.
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.
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Should any water get past the siding.
The irc 2000 code and our building dept.
Use tyvek over building felt under siding.
Installing foam board insulation under vinyl siding today.
Tar paper does not offer this.
Siding applied directly over tar paper creates a sandwich effect and can trap water between the siding material and the tar paper.
Faq s acronym s terminology to tyvek or not to tyvek that is the question.
If you want vertical drainage with tar paper you have to add treated lumber strips on top of the tar paper.