How to Fix Fiberglass Gaps

Protect yourself when working with fiberglass.

Gaps in fiberglass insulation may not seem like a big problem, but you can actually lose a lot of heat through these small spaces. Fix these gaps to keep warm air inside the home and cool air out. This saves on your heating and cooling bills and prevents drafts. Look for gaps in fiberglass insulation in areas that are difficult to fill, such as around piping or windows.

Things You'll Need

• Gloves
• Dust mask
• Goggles
• Fiberglass insulation
• Large shears (optional)
• Ruler

Instructions

1. Prepare for working with fiberglass insulation by wearing goggles, dust mask, gloves, a long-sleeved shirt and long pants and tucking your clothes in so you don't have any openings for the fiberglass to go. Fiberglass is irritating to the skin.

2. Cut the fiberglass insulation with large shears so it fits the gap. You can also tear the insulation if you don't have shears.

3. Press the insulation into the gap so it fits tightly without any more gaps. Use a ruler to wedge the insulation into position.

4. Open fiberglass by peeling it in half and press one half behind pipes to fill this gap. Use the other half in front of the pipe to finish insulating.

Tips & Warnings

• Fiberglass insulation is irritating to the skin. People have different reactions to it, but it is best to take all necessary precautions so that it doesn't touch your skin.

• Wear a protective mask over your mouth and nose when working with fiberglass insulation.

References

• Build Your Dream Home for Less; R. Dodge Woodson
• Energy Efficient Homes For Dummies; Rik DeGunther
• The Complete Idiot's Guide to Trouble-free Home Repair; David Tenenbaum