Foam Board 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.

Foam board insulation under siding.

Insulated vinyl siding is installed with nails as with standard vinyl. Types of insulating boards choose from three types of insulating foam core boards for wall insulation. Eps is used under roofing over foundation walls and beneath siding. This foam board insulation is the rigid pink or blue panels that can be found at home centers in many different thicknesses.

Below are some of the design details along with the benefits. Generally referred to as rigid foam insulation this type of foam insulation is. 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. Kingspan insulation r 3 common.

In reality rigid foam board which sometimes comes in fanfold usually only has an insulating factor of r 1 and does not add any appreciable insulation effect to your home. Rigid foam insulation also known as insulating boards provide high r values. 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. You can even place it under the foundation slab.

0 56 in x 4 ft x 8 ft. It also serves as an air barrier. How to install rigid foam under siding. 0 56 in x 4 ft x 8 ft 1 unfaced polystyrene foam board insulation item 511270 model 100000050497.

But if you use wood clapboard siding foam sheathing can cause trouble. Foil faced foam board insulation. This detail is used with both new construction and also with renovation work. 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.

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. It provides an r value of 4 per inch of thickness and is the cheapest type of foam board insulation. They keep your home at a comfortable temperature without the need to crank your heat. The bottom edge of the insulation is shaped to receive the top edge of the siding course below so the pieces overlap.

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.