Why Is Tyvek Used Under Vinyl Siding

It adds insulation waterproofing and structural support.

Why is tyvek used under vinyl siding.

The wood that goes under residential siding exterior sheathing performs several functions. I have seen literally hundreds of houses stripped of asbestos siding that had 15 felt under it. Our house was built about seven years ago. If you ve ever taken vinyl siding off a house the day after a good rain it s all wet back there anyways which is why we insist on tyvek.

On the other hand brick stucco and other masonry based sidings can be used with house wrap but your builder will need to use the right type. Its primary purpose is to prevent air and water leaks that may have seeped past the vinyl exterior. They were built in the 1950s and 60s the felt was in perfect condition. One would be to remove the siding wrap the house and then reside it.

The irc 2000 code and our building dept. Use tyvek over building felt under siding. Siding that s assembled from large panels such as vinyl or aluminum cladding also makes a good candidate too since water can enter through cracks where the pieces are joined. On all walls and all exposure conditions there were large areas of the tyvek which were deteriorated to the point of tissue paper.

I just finished removing some vinyl siding installed in 1987. Installing foam board insulation under vinyl siding today. By doing so however you miss out on the opportunity to add add energy savings to the project. Faq s acronym s terminology to tyvek or not to tyvek that is the question.

That s what the tyvek is for. Builder omits house wrap under siding. Several areas where the tyvek had shrunk and torn mainly at window corners. Vinyl siding can be installed directly over wall sheathing wood siding or stucco.

I ll stick with tried and true felt paper. I ve opened up houses built less than 5 years previous and the tyvek was shreaded like old newspaper. Vinyl siding is not water proof is not intended to be water proof and i don t know a siding manufacturer that claims it to be anything more than a cladding. I want to replace the tar paper but i can t find it at homedepot or lowes.

It seems that we have two options. Tyvek was used underneath very poorly installed. This explains why the house does not retain heat.