Insulation Board Under Vinyl Siding

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.

Insulation board under vinyl siding.

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. 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. This detail is used with both new construction and also with renovation work. 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.

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. How to install rigid foam under siding. I get asked if this or that in the in the cavity works as well as foam under the siding. Why insulation under the siding is important.

Generally referred to as rigid foam insulation this type of foam insulation is. But herein lies the problem. As many things in building science go you my dear reader have to learn something. It also serves as an air barrier.

Certainteed vinyl siding with the correct rigid foam board backer makes this house look great. Maybe as i get time working my way around the whole house with this process. 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.

By glenn hooper june 2 2015. I thought i should show why continuous foam under the exterior siding is so important. Foil faced foam board 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.

Because rigid foam doesn t provide much resistance to vinyl siding sagging under its own weight such an installation requires threaded nails that. Below are some of the design details along with the benefits. Most homes in the united states are built with traditional wood frame construction with studs every 16 on center. Insulated vinyl siding is standard vinyl siding with a backing of solid rigid foam insulation.