Projects

Insulating a Crawlspace

Project Overview

Cut insulation to fit between the joists above the foundation walls. Install fiberglass insulation between the floor joists over crawlspaces or unheated basements. Cut pieces of insulation long enough to drape from the mudsill, down the wall, and onto the floor. Hold in place by putting a 1 x3 over it and tacking both to the mudsill, driving the nails enough to anchor the insulation while compressing it only slightly. Lay a 6-mil vapor barrier on the dirt floor, anchoring it with bricks.

Step 1

CUT INSULATION

Cut insulation to fit between the joists above the foundation walls. Pack the insulation just tightly enough to prevent it from falling out.

Step 2

INSTALL FIBERGLASS INSULATION

Install fiberglass insulation between floor joists over crawlspaces or unheated basements. Make sure the vapor barrier faces up, and install insulation stays [shown here) or chicken wire to hold the insulation in place.

Step 3

CUT INSULATION TO DRAPE MUDSILL

Cut pieces of insulation long enough to drape from the mudsill, down the wall, and a couple of feet onto the floor. Hold in place by putting a 1 x3 over it and tacking both to the mudsill, driving the nails enough to anchor the insulation while compressing it only slightly. Lay a 6-mil vapor barrier on the dirt floor, anchoring it with a few bricks.

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Project Details

Skill Level: Beginner

Time: 1 hour

Before you start, read this »

Due to differing conditions, tools, and individual skills, The Home Depot® assumes no responsibility for any damages, injuries suffered, or losses incurred as a result of attempting to replicate any of the home improvement ideas portrayed in this website Before beginning any home improvement project, review it thoroughly to ensure you or your contractor can finish the project and if any doubts or questions remain, consult local experts or authorities. Because codes and regulations vary greatly, you always should check with authorities to ensure that your project complies with all applicable local codes and regulations. Always read and observe all of the safety precautions provided by any tool or equipment manufacturer, and follow all accepted safety procedures.

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