Why Is Tyvek Used Under Vinyl Siding On A Shed

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.

Why is tyvek used under vinyl siding on a shed.

I just finished removing some vinyl siding installed in 1987. Our house was built about seven years ago. I just built an 8 by 10 foot shed and sheathed it with 1 2 inch cd. This explains why the house does not retain heat.

During a recent repair to our siding we found that the house had no building wrap tyvek under the siding. Whichever product you choose make sure that you follow the manufacturer s installation instructions carefully. I ll stick with tried and true felt paper. It adds insulation waterproofing and structural support for the framing.

They were built in the 1950s and 60s the felt was in perfect condition. I ve opened up houses built less than 5 years previous and the tyvek was shreaded like old newspaper. 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. I have seen literally hundreds of houses stripped of asbestos siding that had 15 felt under it.

If you enclose the space between the ground and your shed then a moisture barrier is advisable between the plywood floor and the joists. Yes dupont tyvek wb can be used under any façade including brick stucco vinyl cedar siding metal and stone. Use a house wrap like tyvek around the whole structure before you install the siding. Sheds that have 6 or more inches of air flow under them shouldn t need a vapor barrier underneath.

It seems that we have two options. It also provides a. Builder omits house wrap under siding. Tyvek was used underneath very poorly installed.

Its primary purpose is to prevent air and water leaks that may have seeped past the vinyl exterior. Several areas where the tyvek had shrunk and torn mainly at window corners. The wood that goes under residential siding exterior sheathing performs several functions. All to often well designed building products are installed incorrectly which reduces their effectiveness and usually causes some other unforeseen problem down the road.

This is why i don t use felt and generally choose typar. On all walls and all exposure conditions there were large areas of the tyvek which were deteriorated to the point of tissue paper. 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. Proper installation under each façade is essential to ensure tyvek provides the maximum level of air infiltration resistance and bulk water holdout.

The air flow should keep the understructure dry. Start at the bottom and go up overlapping.