How To Insulate Your Basement

Posted on: 8 January 2015

Many people don't realize that even though their basement is below ground, they could still lose a lot of heat if the basement walls are uninsulated. Basement walls can quickly conduct heat from your basement out into the ground around your home, particularly if the walls are cinder block or concrete. This is why it's so important to put up insulation on your basement walls before you install drywall. One of the best types of insulation you can use for this purpose is foam board. Not only is foam board insulation resistant to mold, it is very thin, which means it will use up less space in your basement.

What You Will Need

  • Construction Adhesive

  • Utility Knife

  • Caulking Gun

  • Measuring Tape

  • Seam Tape

  • Sponge

  • Soapy Water

Step 1. Use a sponge and soapy water to clean any grime or grease from the walls of your basement. Then allow the walls to fully dry before proceeding.

Step 2. Use a utility knife to cut off the tip of a tube of construction adhesive at a 45° angle. Remember to punch a hole through the inner seal. Then place the tube of adhesive in a caulking gun. Press the trigger unto you feel resistance.

Step 3. Use a measuring tape to determine the distance from the floor to the ceiling in your basement. Use the utility knife to cut out a piece of foam board to the correct height.

Note: It's a good idea to keep your insulation out of direct sunlight before and after you install it. Foam board insulation tends to break down when it's exposed to UV rays.

Step 4. Following the recommendations provided by the manufacturer of your tube of adhesive, apply a quantity of the adhesive to one side of the foam board.

Step 5. Turn the side of the foam board with the construction adhesive on it toward the wall and press the foam board against the wall. Hold the foam board panel in place for a couple of minutes.

Step 6. Repeat steps 3-5 to cover the rest of your basement walls with foam board insulation. You will have to make cuts and holes in the insulation to allow for water pipes, electrical outlets and similar features.

Step 7. Use insulation seam tape to seal all the seams between the insulation panels. This will help to ensure that moisture can't make its way through the insulation and seep into your basement.

Talk to your local HVAC experts, such as Clay's Climate Control LLC, for more information.