Insulation Board Before Siding

The bottom edge of the insulation is shaped to receive the top edge of the siding course below so the pieces overlap.

Insulation board before siding.

It provides an r value of 4 per inch of thickness and is the cheapest type of foam board insulation. Eps is used under roofing over foundation walls and beneath siding. Attach the tongue and groove insulation boards to the concrete wall with adhesive. Insulated vinyl siding is installed with nails as with standard vinyl.

How to install rigid foam under siding. A common choice is drywall. Insulated foam sheets are also used as an insulated sheathing underlayment for. 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.

This detail is used with both new construction and also with renovation work. 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. 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. Generally referred to as rigid foam insulation this type of foam insulation is also called foam board foam plastic insulated sheathing and rigid foam sheathing.

In the end the decision to install house wrap under your siding is a personal one that you should make after discussing it with your contractor. Follow with a 2x4 frame wall and insulate it with batt insulation. 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. Keep in mind that any interior rigid insulating panel must be covered by a barrier.

Care must be exercised during the installation process to ensure that the insulation works effectively to control the penetration of water and air into the wall assembly. When new siding is installed the old siding can be left in place or torn off before the new siding is installed. Fiberglass batt insulation is also lightweight and compresses when pressed indicating there is a lot of air in between the fiberglass material. Below are some of the design details along with the benefits.