How to Replace Blown-in Insulation
If leaks are showing up on your ceiling, it's time to fill the insulation gaps.
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Blowing insulation into an attic space is a two-person job. The person who will be in the attic should dress for working in warm conditions and be sure to wear proper safety equipment, including gloves, dust mask, long-sleeved shirt and safety glasses.
Here's how to use an insulation blower to fill a problem area:
Materials and Tools:
insulation blower (available for rental at home stores)
1. Prepare and assemble the insulation blower, including attaching the blower motor, the hose and power cords. If the machine uses two power cords, plug them into separate outlets to avoid an overload.
2. Wearing dust mask, gloves and safety glasses, fill the bin with insulation. Break up large chunks with your hands.
3. Have one person go into the attic with the blower hose while the other stays outside to keep the hopper filled. Turn on the agitator motor, then the blower motor, and fill the area in the attic until the insulation covers the joists a little to allow for settling.
Dig up the broken section and swap it out with these step-by-step instructions.