Insulating Concrete Walls With Foam Board

Follow with a 2x4 frame wall and.

Insulating concrete walls with foam board.

Attach the tongue and groove insulation boards to the concrete wall with adhesive. Some types of thicker foam board insulation are available but they may need to be special ordered. Applications for helix include but are not limited to. The insulation may be rigid board extruded or expanded polystyrene or polyisocyanurate closed cell spray polyurethane foam cellular glass fibrous batt or fibrous blown in insulation note however that fibrous insulation is susceptible to moisture.

Polystyrene foam boards commonly called foamboard are a clean lightweight convenient way to insulate bare concrete walls. After the adhesive cures add extension boxes to the outlets and switches and spray foam into every gap top bottom and around each box. For a basement remodeling project consider insulating basement walls with foam board. Helix is mixed in with the concrete as a replacement for rebar to increase its strength and durability.

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. Interior insulation refers to insulation applied to the interior side of the concrete masonry as shown in figure 1. It comes in standard size 4 8 sheets and smaller sizes in many different thicknesses from 1 4 inch to 2 inches. When gluing the foam board on the concrete walls there will be voids behind the foam board where it doesn t contour exactly to the wall.

Use a premade kit for this type of project. Is this a concern for moisture or mold in the void. For new construction use rigid boards to insulate slabs and the outside of foundation walls. 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.

Foam board insulation is easy to use and is a great diy way to add some insulation. Structural foundations footings slabs walls shotcrete and precast. After that thin furring strips are installed on top of the foam to provide a firm base for the drywall screws and drywall but can you run rigid foam between the studs just as you would do with fiberglass rolls or spray foam. Or is the foam board still insulating enough to stop moisture from forming in the voids.

0 56 in x 4 ft x 8 ft 1 unfaced polystyrene foam board insulation item 511270 model 100000050497. Kingspan insulation r 3 common. Todd poured concrete walls are not perfectly flat.