How To Properly Insulate Attic Rafters

Airspace from the soffit to the ridge by installing a continuous air chute in each rafter bay.

How to properly insulate attic rafters.

To install insulation. Lay a two by four on top temporarily compressing the insulation to a manageable. Staple them directly to the roof decking for better insulating roof rafters. Protect the damp proof coating from damage during backfilling.

Installing a vapor barrier. To effectively ventilate your roof create a 1 in. If there is a floor you will need to remove it to properly insulate the roof rafters. Use 3 8 inch heavy duty staples every six inches.

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. How to install rafter insulation. Apply insulation between rafters when finishing an attic into a heated room or when building a cathedral ceiling in the home. Batts and blankets insulation often comes with a vapor retardant facing and some varieties.

Place the plastic sheeting on top of the rolled insulation. To cut blanket style insulation place the product over a piece of plywood with its paper or foil side down. If the plastic sheeting is in pieces overlap the pieces by 8 inches and staple it in place directly to the roof rafters and the wall. You can use rigid foam panels or do as tom silva does with nearly all houses these days.

Provide some protection against moisture intrusion. Garages built without attics are. Install ventilation baffles into the space between the rafters before you install the insulation usually by stapling into place. Attach the insulation to the rafter scab board by the paper flange so as not to compress the fiberglass.

Minimize thermal bridging and reduce heat loss through the foundation. Hire a pro to install spray foam insulation. If your attic is going to be converted into livable space then you will need to insulate the roof rafters. Place planks 1 by 6 or 1 by 8 or plywood sheaths across floor joists to improve.

How to insulate an unfinished attic preparing an attic for insulation. To install the air chutes staple them directly to the roof decking.