Insulating Concrete Walls With Foam Board

Is this a concern for moisture or mold in the void.

Insulating concrete walls with foam board.

Attach the tongue and groove insulation boards to the concrete wall with adhesive. Foam board insulation is easy to use and is a great diy way to add some insulation. 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. 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.

0 56 in x 4 ft x 8 ft. 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. Helix is mixed in with the concrete as a replacement for rebar to increase its strength and durability. Polystyrene foam boards commonly called foamboard are a clean lightweight convenient way to insulate bare concrete walls.

Applications for helix include but are not limited to. 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 new construction use rigid boards to insulate slabs and the outside of foundation walls. Or is the foam board still insulating enough to stop moisture from forming in the voids.

Todd poured concrete walls are not perfectly flat. The insulating board also works for insulating uninsulated spaces and for shallow frost protected foundations. Follow with a 2x4 frame wall and. It comes in standard size 4 8 sheets and smaller sizes in many different thicknesses from 1 4 inch to 2 inches.

There is almost no mess and the foam isn t itchy like fiberglass. Kingspan insulation r 3 common. Use a premade kit for this type of project. Some types of thicker foam board insulation are available but they may need to be special ordered.

For a basement remodeling project consider insulating basement walls with foam board. 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. 0 56 in x 4 ft x 8 ft 1 unfaced polystyrene foam board insulation item 511270 model 100000050497.