How To Install Insulation In Attic Rafters

Start in a corner away from the attic hatch and fit the roll insulation between the joists facing against the drywall.

How to install insulation in attic rafters.

Fill every joist space completely and evenly with the insulation leaving attic vents uncovered. Tape the seams with duct tape. 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. For rolled insulation place it between roof rafters.

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. Use 3 8 inch heavy duty staples every six inches. 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. 2 snap a chalk line between the length measurements.

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. 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. Overlap the sheets by 8 to 10 inches. Rafter vents should be placed in your attic ceiling in between the rafters at the point where your attic ceiling meets your attic floor.

Find a pre screened local home insulation contractor. Staple sheets of 6 mil plastic over unfaced insulation to create a vapor barrier. If you have a solid floor covering the roof rafters use the claw end of a hammer to pull the floor up in several locations and blow the insulation under the boards. Staple through the plastic and into rafters.