Do You Need Tyvek Under Siding

There is a foam insulation product designed for.

Do you need tyvek under siding.

During a recent repair to our siding we found that the house had no building wrap tyvek under the siding. The wrap should go behind the foam insulation. It is an air barrier. If you choose to install house wrap with rigid foam generally it should go under the insulation not around it.

You can put hardi directly on studs without sheathing but you need to use let in bracing to give structural rigidity to the walls. Tyvek is not an insulation. The irc 2000 code and our building dept. Use tyvek over building felt under siding.

What do you suggest that we do. The answer happily is yes. 2 i don t like having tyvek seams at the corners 3 with the windows under the t1 11 5 4 trim becomes to thick could use 1x trim 4 if i install the windows over the t1 11 my only seal then is the flashing tape under the trim. They are each right in a way.

It depends what you are trying to do and you give little information leaing one to guess. Myself i would not consider using the siding without sheathing but that s your decision. The second would be to blow insulation into the walls. And either way you should use a barrier like tarpaper or tyvek underneath it.

Then yes it is recommended to have a tyvek type house wrap installed on your home. In fact the two products combined make your home super insulated from outside wind and weather. 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. Faq s acronym s terminology to tyvek or not to tyvek that is the question.

Installing foam board insulation under vinyl siding today. 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. It seems that we have two options. The seams should be taped and the windows and doors should be taped.

Vinyl siding is one of if not the most popular exterior cladding for residential homes. 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.