How To Install Rigid Foam Insulation On Concrete Walls

How to install rigid foam board on the walls of a crawl space.

How to install rigid foam insulation on concrete walls.

Firstly you can apply it directly onto the house s concrete walls with the help of a construction adhesive that will hold it in place. Adding rigid foam insulation to your crawl space is one of the smartest things you can do to your house. There may be other adhesive manufacturers compatible with xps insulation. One advantage to the novice who has neither the equipment the tools nor experience to install foam insulation is that rigid foam insulation can be installed very simply.

Polystyrene foam boards commonly called foamboard are a clean lightweight convenient way to insulate bare concrete walls. For a list of complete adhesives for all applications from dow browse through our adhesives solutions. Most commonly used adhesives with styrofoam xps insulation are enerbond professional foam adhesive and great stuff pro wall floor adhesive. The correct method of using rigid foam is to run continuous 4 foot by 8 foot sheets of the foam across the concrete basement wall making the rigid foam the de facto wall.

There s two ways you can go about with foam board insulation. Now as you glue the panels to the exposed concrete blocks leave a inch gap at the floor and ceiling and cut holes in the panels to fit around outlets and wall switches. The advantages are multiple. I went with 2 rigid foam attached 2x2 furring strips 5 tapcons thru strips and foam to concrete then filleted r11 batt insulation in half to fit in the 2x2 wall cavities to get r15 total.

After the adhesive cures add extension boxes to the outlets and switches and spray foam into every gap top bottom and around each box. How to glue polystyrene insulation to a concrete wall. Installing rigid foam insulation.