Do You Need Tyvek Under Siding

There is a foam insulation product designed for.

Do you need tyvek under siding.

Faq s acronym s terminology to tyvek or not to tyvek that is the question. Use tyvek over building felt under siding. Once this is done the wrap is designed to make the home water tight in case a storm comes before the siding is finished being installed. The wrap should go behind the foam insulation.

What do you suggest that we do. 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. The seams should be taped and the windows and doors should be taped. Tyvek is not an insulation.

Installing foam board insulation under vinyl siding today. They are each right in a way. The answer happily is yes. Then yes it is recommended to have a tyvek type house wrap installed on your home.

During a recent repair to our siding we found that the house had no building wrap tyvek under the siding. It depends what you are trying to do and you give little information leaing one to guess. It seems that we have two options. One would be to remove the siding wrap the house and then reside it.

This explains why the house does not retain heat. If you choose to install house wrap with rigid foam generally it should go under the insulation not around it. If this was true than every architect and every builder all over the country should be talking about it and it should be on the plans that you can t use tyvek under cedar. You can put hardi directly on studs without sheathing but you need to use let in bracing to give structural rigidity to the walls.

And either way you should use a barrier like tarpaper or tyvek underneath it. In fact the two products combined make your home super insulated from outside wind and weather. It is an air barrier. The irc 2000 code and our building dept.

Myself i would not consider using the siding without sheathing but that s your decision. There is no logical reason not to have house wrap under vinyl siding and many authorities strongly agree that it should be viewed as mandatory even if your local building codes don t necessarily require it.