Heat rises, so having insulation in a ceiling is important. A well-insulated ceiling will keep your energy costs down. You have many options when it comes to insulation. The easiest way to hang insulation in a ceiling is to use either fibreglass batts or blown-in loose-fill insulation. Fibreglass batt insulation comes in large rolls covered with a paper face on two sides. Blown-in loose-fill insulation comes in bags. The method you should use depends on your access to the spaces between the studs.
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Things you need
- Utility knife or heavy-duty shears
- Heavy-duty staple gun
- Cellulose blowing machine
Choose the type of insulation that suits your project. If the ceiling is open -- if you can see the wood studs from below -- you can use fibreglass batts. If the ceiling is closed and the ceiling has an attic above it, you can insulate the ceiling by installing fibreglass batts or blowing loose-fill insulation into the spaces between the studs on the attic floor. If the ceiling is closed but you have no access from above, then you will have to remove the materials covering the ceiling to access the studs.
Install fibreglass batts in an open ceiling by filling the gaps between the studs. Measure and cut each piece of insulation to size. Use a utility knife or heavy-duty shears to cut the fibreglass. For maximum effectiveness, cut the insulation so that it exactly fills the gaps. Place the fibreglass into the gap. Use a heavy-duty staple gun to attach the paper face of the fibreglass to the sides of the wood studs. Do not stuff the fibreglass into place; fibreglass insulation is only effective when it is fluffy and full of air.
Install fibreglass insulation in a closed ceiling by filling the spaces between the ceiling studs from the attic above. Cut each piece to size and lay it between the studs. There is no need to staple it. Do not compress the fibreglass insulation as you install it. For spaces that require multiple pieces, butt the ends of the pieces against each other.
Install blown-in loose-fill insulation by renting an insulation blower or hiring a professional insulation company. If you decide to rent a blower, follow the manufacturer's instructions for mixing the loose-fill material. Then set up the blower according to its manual. Blow a thick layer of insulation in between the studs. Stop when you reach the insulation manufacturer's recommended density of coverage.
Tips and warnings
- While renting a blower yourself may be cheaper, check for local building code requirements you may have to meet. For example, some building codes forbid filling an attic floor that has protruding recessed light receptacles without first installing protective covers over the receptacles. A professional company will be aware of these issues and will be able to perform the proper preparations.
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