# How to Convert a Deck Into an Insulated Floor
Insulating your deck is a good choice if you find the surface becomes uncomfortably cold underfoot during early spring and late fall. Installing fiberglass insulation is a straightforward operation that can be completed in a single afternoon, and requires few tools. Use double-faced insulation to avoid exposing the fluffy insulating material to the elements and to increase its longevity.
Things You'll Need
- Safety equipment
- Double-faced insulation
- Staple gun
- Utility knife
Instructions
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1
Put on a dust mask, safety goggles and a hard hat to protect yourself from both fiberglass particles and the hard underside of your deck. Wear gloves, a long-sleeved shirt and pants to protect your arms and legs from insulation itch.
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2
Crawl under the deck and push a piece of double-faced insulation batting up between two of the joists. Position the insulation so the vapor-retardant side is upward and the side with flanges faces you. Staple the flanges to the joists to secure the insulation in place.
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3
Install subsequent pieces of insulation batting the same way as the first. Cut strips of insulation that are too long with a utility knife, rather than attempting to fold them. Avoid compressing the insulation, as this reduces its effectiveness.
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Floors
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