House Wrap Under Siding

Table of building wrap products and performance guide to choosing using synthetic paper felt plastic draining housewraps.

House wrap under siding.

Wind can tear at expose house wraps especially during storms and dirt can accrue on them. Moisture will find its way into these wall systems by way of cracked mortar joints gaps or cracks in the surface of the material. Perhaps recent damage to their siding showed no house wrap under their vinyl or they are working with a contractor who doesn t believe house wrap to be necessary. Barricade building wrap will effectively protect wall systems of steel sided structures against moisture accumulation from condensation or water infiltration.

House wrap is intended to be installed over the sheathing and behind the siding no matter what siding you are using. When building exterior walls with stone stucco brick when building exterior walls with stone stucco brick cedar eifs or fiber cement siding it is important to use an effective rain screen system that will provide a means for drainage and ventilation. This explains why the house does not retain heat. Homes built under the 2006 irc and later versions most siding is requires a wrb.

If you don t know the length of time your house wrap can withstand the elements simply assume four months and finish your siding before then. In the 2015 irc the column in table r703 4 was eliminated and most of the exceptions to the required wrb in section r703 2 describing water resistive barrier were eliminated. Our house was built about seven years ago. During a recent repair to our siding we found that the house had no building wrap tyvek under the siding.

Barricade building wrap is a superb house wrap for steel sided buildings and homes. It seems that we have two options. One would be to remove the siding wrap the house and then reside it. The material is designed to keep out moisture and reduce drafts while simultaneously allowing the walls to breath.

House wrap requirements tyvek rwrap typar building paper roofing felt rosin paper. Siding manufacturers may recommend specific types of wrb to use with their products. For years commercial and industrial buildings have utilized steel siding. The wrap comes in rolls and is stapled directly onto the wall sheathing.

High quality house wraps can last up to 9 months and specialized house wraps last up to a year. However if you re interested a residing project offers the perfect time to examine your home s weather barrier and exterior insulation and improve it if need be. House wrap is a common type of insulation on new homes. In the end the decision to install house wrap under your siding is a personal one that you should make after discussing it with your contractor.

The acceptability of various materials for use as house wrap or rain barrer under wall siding questions answers about moisture vapor barrier requirements underneath building. House wrap is indeed considered a necessity by the majority of contractors as well as housing authorities including local building and planning departments.