Insulation Under Vinyl Siding

I thought i should show why continuous foam under the exterior siding is so important.

Insulation under 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. 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. Before installing vinyl siding over existing wood siding or wall sheathing the wood must be dry and in good condition. 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.

Installation of this insulation type under fiber cement siding can create an incredible 600 more energy efficient home. Insulated vinyl siding is standard vinyl siding with a backing of solid rigid foam insulation. How to install rigid foam under siding. There are insulated rigid foam products that will increase the insulation factor but you ll pay much more for r 5 to r 7.

In fact you can check if it is a correct insulation installation by pressing on the house 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. As many things in building science go you my dear reader have to learn something. To be completely efficient this insulation type has to mold perfectly with the inside of your home siding.

By glenn hooper june 2 2015. It also serves as an air barrier. 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. This detail is used with both new construction and also with renovation work.

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. I get asked if this or that in the in the cavity works as well as foam under the siding. Below are some of the design details along with the benefits. Installing insulation over moisture or existing rot can create larger headaches later.

An honest professional vinyl siding contractor will tell you exactly what you re getting. Most homes in the united states are built with traditional wood frame construction with studs every 16 on center. Generally referred to as rigid foam insulation this type of foam insulation is. We will start with hot climates.