Insulation Under Siding

To be completely efficient this insulation type has to mold perfectly with the inside of your home siding.

Insulation under siding.

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. In fact you can check if it is a correct insulation installation by pressing on the house siding. 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.

By glenn hooper june 2 2015. Below are some of the design details along with the benefits. 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. Installing insulation over moisture or existing rot can create larger headaches later.

Why insulation under the siding is important. Insulated vinyl siding is installed with nails as with standard vinyl. The bottom edge of the insulation is shaped to receive the top edge of the siding course below so the pieces overlap. Most homes in the united states are built with traditional wood frame construction with studs every 16 on center.

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. We will start with hot climates. Eps is used under roofing over foundation walls and beneath siding. Generally referred to as rigid foam insulation this type of foam insulation is.

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. This foam board insulation is the rigid pink or blue panels that can be found at home centers in many different thicknesses. As many things in building science go you my dear reader have to learn something.

Before installing vinyl siding over existing wood siding or wall sheathing the wood must be dry and in good condition. I thought i should show why continuous foam under the exterior siding is so important. 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.