Insulation Board Under Vinyl Siding

It also serves as an air barrier.

Insulation board under vinyl siding.

Because rigid foam doesn t provide much resistance to vinyl siding sagging under its own weight such an installation requires threaded nails that. By filling the voids behind the siding s stepped profile the insulation makes the complete material stiffer and more resistant to warping and movement than conventional vinyl siding. Foil faced foam board insulation is a great idea but is not a good choice for hot climates or cold climates as an exterior insulation product. Generally referred to as rigid foam insulation this type of foam insulation is.

As many things in building science go you my dear reader have to learn something. How to install rigid foam under siding. By glenn hooper june 2 2015. Maybe as i get time working my way around the whole house with this process.

I get asked if this or that in the in the cavity works as well as foam under the siding. If they use a backer board at all contractors will often call it and sell it as insulation board. Whenever vinyl siding is installed over rigid foam with or without foil facing studs should be spaced no more than 16 inches on center and the thickness of the foam should be limited to 1 inch. I thought i should show why continuous foam under the exterior siding is so important.

This detail is used with both new construction and also with renovation work. Below are some of the design details along with the benefits. Hot climates already have a lot of heat and vinyl siding tends to expand and contract with temperature changes up to 1 if the siding is. We will start with hot climates.

Since i need to replace this window and it is on a small north sided wall i got to thinking if it would be a good idea to remove the siding replace the window then install 1 2 inch insulation board on top of the osb then put back the vinyl siding. Why insulation under the siding is important. But herein lies the problem. Installing foam insulation under vinyl siding is a wise choice for homeowners who are seeking to protect their homes against moisture infiltration as well as improve energy efficiency.

Many houses built today have a double wall type of insulation with fiberglass batts fastened between the studs on the inside and rigid foam board over. Continuous insulation under new siding has become a popular way to improve energy efficiency on an existing home because it addresses a problem known as thermal bridging. Insulated vinyl siding is standard vinyl siding with a backing of solid rigid foam insulation. Certainteed vinyl siding with the correct rigid foam board backer makes this house look great.