Foam Insukation Under 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.

Foam insukation under siding.

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 made of recycled vinyl material. It also serves as an air barrier. Below are some of the design details along with the benefits. You can even place it under the foundation slab.

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. 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. Insulated vinyl siding is standard vinyl siding with a backing of solid rigid foam insulation. 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 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. 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. And even though some manufacturers call it rigid foam insulation for the purpose of vinyl siding it basically has the same insulating value as a piece of plywood.

Install it anywhere from the roof to the foundation. We will start with hot climates. Most homes in the united states are built with traditional wood frame construction with studs every 16 on center. Rigid insulation is one of the best tools to reduce your energy costs.

One new wrinkle for many builders is walls built with fiber insulation between the studs plus rigid foam. How to install rigid foam under siding. Siding over rigid foam a vented drainable air space keeps wood siding dry and stable. Rigid foam insulation also known as insulating boards provide high r values.