How To Install Insulation In Attic Rafters

Overlap the sheets by 8 to 10 inches.

How to install insulation in attic rafters.

Once they are in place you can then place the batts or blankets or blow insulation right out to the very edge of the attic floor. Staple it to the rafters or scabbed on boards with a staple gun so that the paper backing is toward the interior of the room to act as a vapor barrier. Tape the seams with duct tape. With a helper to load the blower with insulation as needed start at the perimeter of the attic and work toward the attic access door.

If your house doesn t already have a layer of insulation between the joists you ll need to install one before adding a layer over the joists. Fill every joist space completely and evenly with the insulation leaving attic vents uncovered. Attach the insulation to the rafter scab board by the paper flange so as not to compress the fiberglass. Find a pre screened local home insulation contractor.

Level uneven spots with a rake. 2 snap a chalk line between the length measurements. Staple sheets of 6 mil plastic over unfaced insulation to create a vapor barrier. Rafter vents should be placed in your attic ceiling in between the rafters at the point where your attic ceiling meets your attic floor.

Measure the length and width between two rafters in your attic and transfer the measurements to a 4 ft by 8 ft of rigid foam insulation board. Replace the floorboards and then spray more insulation on top of it. For rolled insulation place it between roof rafters. Staple through the plastic and into rafters.