Foam Insulation 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 insulation under 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. Siding over rigid foam a vented drainable air space keeps wood siding dry and stable. Although rigid foam insulation is more expensive than fiberglass insulation it is more efficient. 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.

It also serves as an air barrier. One new wrinkle for many builders is walls built with fiber insulation between the studs plus rigid foam. Insulated vinyl siding is installed with nails as with standard vinyl. 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.

They keep your home at a comfortable temperature without the need to crank your heat. It is designed to prevent a house from losing heat. Heating costs increase every year making insulation more and more important. Eps is used under roofing over foundation walls and beneath siding.

We will start with hot climates. This foam board insulation is the rigid pink or blue panels that can be found at home centers in many different thicknesses. You can even place it under the foundation slab. Install it anywhere from the roof to the foundation.

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

Rigid foam insulation also known as insulating boards provide high r values. The bottom edge of the insulation is shaped to receive the top edge of the siding course below so the pieces overlap. It provides an r value of 4 per inch of thickness and is the cheapest type of foam board insulation. Below are some of the design details along with the benefits.

The insulation itself can be up to 1 25 inch thick at its thickest point but due to the stepped profile much of the insulation is thinner. 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.