How to Install Foam Insulation in a New House

One benefit of a new house is that you can complete projects without needing to work around changes made by previous owners, or clutter accumulated by your and your family in your time there. One such project is installing foam board insulation on bare concrete walls, which are often found in basements and garages. This is a basic project that can save you money in the long run by making your home more energy-efficient.

Power washer
Tape measure
Foam insulation boards
Straightedge
Utility knife
Foam adhesive
Paintbrush
Installation tape

Instructions

- 1
  Clean the walls by spraying them with a power washer, and allow them to dry overnight.
- 2
  Measure the walls and cut the foam boards to fit. To cut the boards, hold a straightedge against the cut line and score it with a utility knife, then snap the board at the score line.
- 3
  Cover the back of the board with foam adhesive. Use a paintbrush to apply the adhesive.
- 4
  Install the board horizontally along the bottom of the wall in the first corner, pressing it firmly against the wall to ensure a solid bond.
- 5
  Continue to install the foam boards until the bottom of the walls are covered.
- 6
  Install a second row of foam boards on top of the first row, if needed. Stagger the boards in the second row so that the vertical seams between the boards in each row do not form a straight line.
- 7
  Cover the seams between the different foam boards with installation tape.

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