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.
Insulate concrete block wall basement.
If you re still in the process of building your basement walls add foam inserts to the cavities in each cinder block to.
Because they are naturally located below ground level basements are mostly cool and damp.
Below grade concrete foundation walls are very col and damp.
Insulation is vital for concrete basement walls the basement hold the house s furnace water heaters laundry machines and essential utilities.
Any of the following insulation materials are acceptable for this purpose.
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.
Insulating basement walls in cold climates is a great way to keep your home warmer and drier.
Use foam insulation 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.
Closed cell spray polyurethane foam or either xps eps or polyisocyanurate rigid foam.
Of unfaced expanded polystyrene r 15 that allows the foundation to dry inward and condition the space with air from inside the house.
Rigid foam insulation offers an r value of 4 to 8 per inch according to energy savers while fiberglass provides only 2.
However special care should be used when insulating concrete or block masonry basement walls.