Insulate Concrete Block Wall Basement
Insulating basement walls in cold climates is a great way to keep your home warmer and drier.
Insulate concrete block wall basement. Rigid foam insulation offers an r value of 4 to 8 per inch according to energy savers while fiberglass provides only 2. Your only option is to cover the inside of the exterior walls with a continuous layer of insulation as though you were insulating a basement wall. Leave the floor above it uninsulated vapor seal the ground below with polyethylene and a thin concrete slab insulate the walls with a foam based insulation such as 4 in. And there is no effective way to fill the voids in an existing concrete block wall.
If you re still in the process of building your basement walls add foam inserts to the cavities in each cinder block to. Closed cell spray polyurethane foam or either xps eps or polyisocyanurate rigid foam. Below grade concrete foundation walls are very col and damp. Basement walls made out of concrete stone concrete bloc and other masonry foundation materials have very minimal insulating properties and cause approximately 20 of heat loss in a home.
Before re siding your exterior walls add a layer of. Of unfaced expanded polystyrene r 15 that allows the foundation to dry inward and condition the space with air from inside the house. Because they are naturally located below ground level basements are mostly cool and damp. However special care should be used when insulating concrete or block masonry basement walls.