Most homeowners find it to be a very a cold area of the home. Some assume the reason is because hot air rises and cold air falls, making the lowest point -- it -- harbor cold air. Good theory, but it's not true. A lack of insulation on it walls is what makes it cold. Insulated basement walls help to keep the entire house warmer which will thereby lower overall utility costs. Basement insulation is important in cold weather climates and equally important in hot weather climates because heat and cold will escape. Cold basements cause the floors above it to become cold and will increase your home heating costs. Hot basements cause the floor above it to be hotter and increase home cooling bills. Insulating basement walls is also very important when you plan on finishing a basement and making it into a living area. Drywall can and should be hung over the insulation. Installing insulation in a basement is definitely a do it yourself project that can be successfully accomplished by a fairly handy homeowner.

Preparing the walls in it is a critical step when insulating, do not skip over it. Wet basements should not be insulated until the water or moisture issue is corrected because mold growth will run rampant between the insulation and it walls. This mold growth will lead to a mold and mildew odor and has a great potential for serious health problems, not to mention degrading the house's structural integrity along the way. Wet basements can cause wood rot on floor joists above the damp area which will cause the wood to weaken thereby weaking the floor.

Preparing it Walls for Insulation

Inspect it for any water leaks.

Repair leaky pipes or wrap the pipes in pipe insulation if the pipes have dripping condensation.

Wash the walls with a mild detergent and scrub brush to scrub away the dirt and debris and reveal any problems and issues.

Repair any cracks or holes with hydraulic cement.

Paint it walls with an epoxy based paint.

Installing the Insulation on it Walls

Buy rigid foam insulation panels at hardware stores and home improvement stores.

Nail furring strips onto it walls with masonry nails. Furring strips are thin strips of wood about 1/2 inch to 1 inch thick which are then nailed to the wall and give the rigid foam board insulation a secure place to hang.

Nail furring strips onto the wall horizontally or vertically every 18 to 24 inches.

Place the rigid foam insulation panel up against the wall and nail the panel  into the furring strip.

Butt each insulation panel tightly up to the next.

Make cuts to the insulation board as you go.

Tape the joints between the rigid foam panels with Tyvek tape.

Hang drywall over the insulation panels when finishing your basement.


Installing rigid foam insulation is an easy and cost effective way to stop heat loss and cooling loss in your home.

Don't forget to insulate basement closets and storage rooms even if you choose not to finish the walls because heat can and will be lost in those areas along with the cool.

Insulating basement walls will significantly reduce heating and cooling costs by enough that you should recover your insulation costs within the first year or two.