Is Tyvek Necessary Under Vinyl Siding Replacement

There is a foam insulation product designed for.

Is tyvek necessary under vinyl siding replacement.

But vinyl siding is not waterproof as i learned while inspecting a house in frigid temperatures after a heavy wind driven rain. There is nothing wrong with tar paper as a housewrap if it is in good condition. Tyvek is not an insulation. The sidewall had icicles protruding from beneath one section of the vinyl siding where rain had penetrated the siding and was frozen in its tracks trying to escape.

Water does and will get behind your vinyl siding. Vinyl siding is one of if not the most popular exterior cladding for residential homes. It depends what you are trying to do and you give little information leaing one to guess. Tyvek is like skin for your house.

Dmoore oct 22 14 at 3 51. Short answer is yes it is absolutely necessary if installing vinyl 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. If the tar paper is in good condition then i wouldn t replace it.

The wrap should go behind the foam insulation. Say that house wrap in not required under vinyl siding however alot of people are using it under vinyl siding and there is a debate seeming to begin to. In this q a a reader is wondering if he should replace the housewrap before re siding his home. Vinyl siding is not water proof nor do any of the manufacturers claim it to be.

We answer this question and offer some additional advice to ensure he has the most successful re siding. The seams should be taped and the windows and doors should be taped. Now that being said i did point out it must be done right or it is useless to use tyvek. It is an air barrier.

Tyvek is that it tears really easy when installing obviously shouldn t tear with siding over it. 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. Then yes it is recommended to have a tyvek type house wrap installed on your home. Since felt is also made with paper it becomes food for mold behind the vinyl siding and i have seen this on many occasions.

Learn more about housewrap and re siding your home. I d rather not use the flashing because it will make it obvious the siding isn t really stucco. It s coming in your house.