Insulation Board Under Vinyl Siding

It also serves as an air barrier.

Insulation board under vinyl siding.

This detail is used with both new construction and also with renovation work. Why insulation under the siding is important. As many things in building science go you my dear reader have to learn something. 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.

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. Insulated vinyl siding is standard vinyl siding with a backing of solid rigid foam insulation. 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. Maybe as i get time working my way around the whole house with this process.

Foil faced foam board insulation. 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. Most homes in the united states are built with traditional wood frame construction with studs every 16 on center. Installing foam board insulation under vinyl siding today more than ever before homes are being built with foam board insulation installed on the outside of the sheathing and under the siding.

How to install rigid foam under siding. If they use a backer board at all contractors will often call it and sell it as insulation board. I thought i should show why continuous foam under the exterior siding is so important. I get asked if this or that in the in the cavity works as well as foam under the siding.

We will start with hot climates. 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. 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. Because rigid foam doesn t provide much resistance to vinyl siding sagging under its own weight such an installation requires threaded nails that.

By glenn hooper june 2 2015. Certainteed vinyl siding with the correct rigid foam board backer makes this house look great. Generally referred to as rigid foam insulation this type of foam insulation is. But herein lies the problem.