Rigid Foam Insulation Basement
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Rigid foam insulation basement. Rarely will you install fiberglass insulation below grade since fiberglass soaks up moisture. Most homes use fiberglass but rigid foam insulation although more costly offers a few extra features. 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. It installs easily with furring strips an.
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. Owens corning foamular 150 1 in. Install it anywhere from the roof to the foundation. Paper foil or vinyl.
This foam board insulation is available with straight or tongue and groove edges to help limit air movement. One exception might be if you are insulating a heated finished basement space against another interior basement space that is unheated. They keep your home at a comfortable temperature without the need to crank your heat. Rigid foam board insulation excels in below grade applications such as basements.
The best rigid board to use there are two types of rigid boards commonly used. 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. You can even place it under the foundation slab. Usually made of fiberglass and it typically has some type of facing attached.
It is denser than eps and provides more r value with a rating of 5 per inch of thickness. Rigid insulation is one of the best tools to reduce your energy costs. Rigid foam insulation also known as insulating boards provide high r values. Save time and space in your basement with owens corning foamular insulpink extruded polystyrene xps insulation.
Many energy experts recommend r 15 to r 20 for far northern states. R 5 scored square edge rigid foam board insulation sheathing model 20we view the owens corning exterior insulation 18 98 18 98. This is very common mainly because it is very cost effective. This foam board insulation is the rigid pink or blue panels that can be found at home centers in many different thicknesses.