Spray Foam for sealing your basement

spray foaming a basement

How to insulate your basement with Spray Foam

Basements are a great place to hang around and have fun, but if your area is not properly sealed not only will it affect the temperature but also your bills!

Because they mistakenly believe that the soil outside does the insulating for them, many people don’t insulate their basement walls. Soil is not a good insulator and heat loss from your basement can account for over one third of the total heat loss from your home.

Done properly, basement spray foam insulation will not only reduce energy loss, but it will make your basement better, drier and much more comfortable.

The 2 best ways to insulate your basement is to hit both sides, interior and exterior.

For interior basement insulation, you can use any of the main types of home interior insulation, including fiber glass, rigid foam board and spray foam . Having a metal or wood frame of studs will help support the insulation and give you a place to attach drywall or wood.

You should install a moisture barrier over the bare wall before adding the stud frame and insulation. Add a sealed barrier over the installed frame and insulation before adding drywall and plywood.

For exterior basement insulation, you must excavate the soil around your home so you can get to the outside surfaces of your basement walls. Cover the entire surface of the wall with a layer of waterproof material before adding spray foam insulation. Metal flashing and a protective cover must be installed over the insulation to make sure moisture does not get between the basement and the insulation wall.

Before installing any kind of basement insulation, you need to fix any cracks, leaks or other moisture problems. Moisture can seriously damage your finished basement and the problem is far more difficult and expensive to fix after a basement is finished.

On the inside, moisture and vapour barriers will help reduce condensation, but they do not prevent water leaking through wall cracks. A basement waterproofing system is the best way to make sure you do not have moisture problems from any source.

On the outside, install a drainage system when insulating the wall. Again, waterproofing your basement will protect you from water damage.