Rigid Foam Insulation Basement

Rigid foam insulation also known as insulating boards provide high r values.

Rigid foam insulation basement.

The main goal for using rigid foam board against masonry walls is to prevent air vapor movement and mold growth while it can be the only insulation used in a basement insulation system it s often supplemented by fiberglass insulation. R 5 scored square edge rigid foam board insulation sheathing model 20we view the owens corning exterior insulation 18 98 18 98. Your choice really comes down to blanket insulation aka fiberglass or xps. The best rigid board to use there are two types of rigid boards commonly used.

Is rigid foam insulation the right insulation for your basement. Usually made of fiberglass and it typically has some type of facing attached. Install it anywhere from the roof to the foundation. Paper foil or vinyl.

When using foam insulation on basement walls the building code irc requires r 5 for southern states excluding the deep south and r 10 for the rest of the us. Rarely will you install fiberglass insulation below grade since fiberglass soaks up moisture. Rigid foam board insulation excels in below grade applications such as basements. This is very common mainly because it is very cost effective.

One exception might be if you are insulating a heated finished basement space against another interior basement space that is unheated. Most homes use fiberglass but rigid foam insulation although more costly offers a few extra features. Basement 13 ceiling insulation 8 crawlspace 8 exterior sheathing 10 exterior wall foundation 8 exterior wall 5 floor 2 garage 8 interior. It installs easily with furring strips an.

It is denser than eps and provides more r value with a rating of 5 per inch of thickness. This foam board insulation is available with straight or tongue and groove edges to help limit air movement. Many energy experts recommend r 15 to r 20 for far northern states. Owens corning foamular 150 1 in.

Rigid insulation is one of the best tools to reduce your energy costs. You can even place it under the foundation slab. Ideally you want to have rigid foam insulation in a basement against all the outside walls and the floor a minimum of five centimetres on the walls and 2 5 cm on the floor. This foam board insulation is the rigid pink or blue panels that can be found at home centers in many different thicknesses.