Does Smartside Siding Need Vapor Barrier

Building codes require a water resistive barrier like tyvek behind the siding.

Does smartside siding need vapor barrier. According to the installation instructions for smartside siding lp smartside 76 series lap siding may be attached directly to framing members spaced up to a maximum of 24 in 600 mm on center so you don t need any sheathing under the siding. Smartside 76 series primed engineered lap siding common. A smart vapor retarder is a good solution for areas of mixed climate. And that leads to air infiltration and seepage the kinds of things that drive up energy costs.

The plastic should be 6 mil poly but 10 mil to 20 mil is better. Does this wall assembly need a vapor barrier such as tyvek a. The insulation is not yet installed. Vinyl siding is one of if not the most popular exterior cladding for residential homes.

This new feature will only be available on expertfinish products. 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. Read more about vapor retarders and learn how they can affect the health of your home. Wrbs including tyvek are vapor permeable.

Learn more about membrain a smart vapor retarder. If used lp will not warrant for. Do i need the vapor barrier or house wrap inside before drywall. I was told to buy styrofoam weathermate plus house wrap but they did not use it on the outside before the cement siding.

Although your siding is your home s first defense against wind many types have small gaps and cracks at the joints where siding panels line up. Maintain the illustrated 1 8 inch. Vapor barrier if required by code breathable wrb 6 12 6 6 min. Do not force siding into place.

You don t want a vapor barrier in this location. Why do homes need house wrap. But this wrb is not a vapor barrier. If you cool your shed the moisture barrier goes on the outside of the building.

Lp smartside expertfinish features an expertfinish lap to avoid the need for seam caulking joint molds or pan flashing on the jobsite. It features a lip on the profile of the product that helps contractors line up each piece of lap to exact specifications on the 3 8 gap. The installation instructions explain that smartside is installed with nails or screws not adhesive. 0 437 in x 12 in x 192 in.

Lp does not recommend lp smartside for use in these non traditional assemblies. Wall construction is important to creating a healthy comfortable home. If you heat your shed the barrier goes on the inside of the wooden frame. In your case the barrier would go between the studs and the smartside panels.