How To Attach Batt Insulation To Concrete Wall

Closed cell spray polyurethane foam or either xps eps or polyisocyanurate rigid foam.

How to attach batt insulation to concrete wall. Cut lengths of insulation a few inches longer than the height of the walls. Attach the blanket to the wall using furring strips or a hilti type gun to drive fasteners into the concrete or cinder blocks. Just be sure to use unfaced batts no kraft paper covering. Because it isolates the concrete.

How to insulate an exterior face of a concrete block wall. Measure the height of the wall and cut insulation batts to fit snugly between the top and bottom plates horizontal members to which studs are attached. Fit adjacent blankets tightly together. Cut batts slightly long cut batts to length by setting the top of the batt into the space and cutting against the bottom plate with a sharp utility knife.

R max is a good product for this and it also has a radaint barrier to reflect heat back into the room. This drywall is required by most building codes to. Leave an extra 1 2 in. Usuallly fiberglass is not recommended in basements because it is so air permeable but paired with xps foam sheet at wall would be a hybrid solution.

If you wish to insulate without an airspace you can apply rigid foam closed cell directly to the concrete. If you seal and tape all seams with ac aluminum duct tape this will also form a vapor barrier. Add a layer of 1 2 inch drywall over any rigid foam insulation. Three basic types of thermal insulation are available rigid board batt or blanket and spray on.

If you are using high density r 15 unfaced batts or special unfaced insulation for masonry walls press it into place left and friction will hold it. Concrete walls can be insulated on the interior or exterior face or by embedding the material within the wall. The best way to insulate the interior side of a basement wall is with foam insulation that is adhered to or sprayed directly on the concrete. Interior installation using the rigid board batt or spray on methods is the least expensive method.

We re using unfaced batts that are sized to friction fit into standard stud spaces either 16 in. Of length for a tighter fit. Rigid foam can be adhered to a poured concrete or concrete block wall with foam compatible adhesive or with special plastic fasteners such as hilti idps or rodenhouse plasti grip pmfs. The word insulation typically brings to mind lofty batts of spun fiberglass rigid foam panels and blown in cellulose.