How To Install Insulation In Attic Rafters

Start by tucking small pieces of insulation between the rafters against the rafter vents.

How to install insulation in attic rafters.

For diy attic insulation you ve got two choices. Loose fill or batt the common term for blanket insulation. Make sure it is flush against the wood as even a 1 inch gap can cause a 20 percent heating loss. Place the plastic sheeting on top of the rolled insulation.

Attach the insulation to the rafter scab board by the paper flange so as not to compress the fiberglass. Level uneven spots with a rake. More insulation installation tricks and tips. The existing layer should sit at the top of the joists.

Overlap the sheets by 8 to 10 inches. Tape the seams with duct tape. It s worth changing tactics to insulate between the rafters and wall joists instead of the floor. If it doesn t add a small piece of insulation over top.

Staple through the plastic and into rafters. Then feed the rolled insulation under wires and pipe if either is present. You can use rigid foam panels or do as tom silva does with nearly all houses these. Staple sheets of 6 mil plastic over unfaced insulation to create a vapor barrier.

For rolled insulation place it between roof rafters. Use 3 8 inch heavy duty staples every six inches. Fill every joist space completely and evenly with the insulation leaving attic vents uncovered. 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.

Find a pre screened local home insulation contractor.