# How to Insulate a Stem Wall
A stem wall is a concrete wall connected to a concrete footing that acts as a basement or foundation wall for a building. Insulating this wall can help make your home more energy-efficient and make the basement a more comfortable place to be. A stem wall can be insulated fairly easily with foam board insulation.
Things You'll Need
- Power washer
- Tape measure
- Foam board insulation
- Utility knife
- Styrofoam adhesive
- Installation tape
Instructions
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1
Wash the walls off with a power washer. Cleaner walls allow the adhesive to hold better.
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2
Measure and cut the boards to fit on the wall with a utility knife.
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3
Spread Styrofoam adhesive on the back of the first insulation board.
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4
Place the board vertically against the wall in one corner. Press it firmly against the wall to allow the adhesive to get a firm grip on the concrete.
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5
Continue installing foam boards along the bottom of the walls until it's complete.
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6
Measure and cut boards for the second row. You will place these boards horizontally on the wall.
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7
Install the boards in the second row directly above the top of the boards in the first row, using the same technique.
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8
Cover the seams between the adjoining boards with installation tape.
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1
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