How To Properly Insulate Attic Rafters

Place the plastic sheeting on top of the rolled insulation.

How to properly insulate attic rafters.

If your attic is going to be converted into livable space then you will need to insulate the roof rafters. If there is a floor you will need to remove it to properly insulate the roof rafters. If you re considering turning your attic into conditioned storage or living space it s worth changing tactics to insulate between the rafters and wall joists instead of the floor. Batts and blankets insulation often comes with a vapor retardant facing and some varieties.

To install insulation. Airspace from the soffit to the ridge by installing a continuous air chute in each rafter bay. Install ventilation baffles into the space between the rafters before you install the insulation usually by stapling into place. To install the air chutes staple them directly to the roof decking.

Provide some protection against moisture intrusion. How to insulate an unfinished attic preparing an attic for insulation. 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. Do not use plastic sheeting in this case.

Garages built without attics are. How to install rafter insulation. Installing a vapor barrier. Hire a pro to install spray foam insulation.

Protect the damp proof coating from damage during backfilling. You can use rigid foam panels or do as tom silva does with nearly all houses these days. To effectively ventilate your roof create a 1 in. Attach the insulation to the rafter scab board by the paper flange so as not to compress the fiberglass.

Place planks 1 by 6 or 1 by 8 or plywood sheaths across floor joists to improve. Minimize thermal bridging and reduce heat loss through the foundation. Staple them directly to the roof decking for better insulating roof rafters. To cut blanket style insulation place the product over a piece of plywood with its paper or foil side down.

Apply insulation between rafters when finishing an attic into a heated room or when building a cathedral ceiling in the home. Make the foundation part of the thermal mass of the conditioned space thereby reducing.