Tyvek HomeWrap...What Is It...Why Is It Better Than Other House Wrap

Contractor Installing StraightFlash
Contractor Installing StraightFlash

DuPont Tyvek HomeWrap and Tyvek DrainWrap have proven themselves time and time again to be the highest quality house wrap available today.

First you will want to understand the reason for placing a house wrap on your home. It has become more important than ever to use a good quality house wrap, With the expanded use of vinyl sidings and fiber cement sidings, both having poor qualities of shedding moisture due to their installation methods.

In modern construction homes are being built for the most part with wood sub sheathing under the exterior wall finish. This will usually be either plywood or OSB (Oriented Strand Board) sheathing. These products will eventually deteriorate or delaminate if left exposed to exterior moisture.

Thus the introduction of house wraps to replace the old practice of building paper or tar paper covers. The house wrap is supposed to allow the walls to breath moisture out to help reduce the chance of mold or mildew build up while limiting the exposure of moisture on the sheathing from the outside.

Most modern house wraps use a similar process of taking a water resistant sheet and perforating its surface to allow moisture in the wall to breath out. The problem with this system is rather obvious, if you poke holes in a surface and then expect it not to leak any water when it gets wet you are going to be disappointed. The rub is that there is an allowable level of permeation or infiltration that these companies comply with that is considered to be good enough.

Magnified Tyvek HomeWrap
Magnified Tyvek HomeWrap

Here is where both DuPont Tyvek HomeWrap and DrainWrap are very different than any other product. These products are made with a patented process that creates a non-perforated sheet made by spinning extremely fine, continuous, high-density polyethylene fibers that are fused together to form a strong tight web. This process creates millions of fine microscopic pores that allow moisture trapped in the walls to breath out will blocking virtually all exterior moisture from getting back to the sheathing.

Tyvek DrainWrap has the added advantage of having what has been called a vertical grooved crinkled surface which allows any water trapped between the loose siding and the wrap to drain away and is the recommended product to be placed behind all fiber cement siding products.

DuPont Tyvek Flex Wrap Installation
DuPont Tyvek Flex Wrap Installation

When properly installed and combined with the recommended flashing system of DuPont FlexWrap and Straight Flash you will have created the most watertight home barrier available today.

These Tyvek products are both listed to have a 120 day resistance to UV exposure and when properly installed will hold up to wind and rain conditions as well or better than any product on the market.

Do you want to learn How to Build a House? Maybe you are interested in learning about PEX Plumbing ? How about understanding the Cost to Build a House ? For these questions and many more visit Home Building Questions today.


If you think you have found a better house wrap than Tyvek HomeWrap leave us a comment and tell us about it.

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