How To Properly Insulate Attic Rafters

Provide some protection against moisture intrusion.

How to properly insulate attic rafters.

To cut blanket style insulation place the product over a piece of plywood with its paper or foil side down. Minimize thermal bridging and reduce heat loss through the foundation. Use 3 8 inch heavy duty staples every six inches. Airspace from the soffit to the ridge by installing a continuous air chute in each rafter bay.

How to install rafter insulation. Place the plastic sheeting on top of the rolled insulation. Protect the damp proof coating from damage during backfilling. To install insulation.

Apply insulation between rafters when finishing an attic into a heated room or when building a cathedral ceiling in the home. Lay a two by four on top temporarily compressing the insulation to a manageable. If there is a floor you will need to remove it to properly insulate the roof rafters. Attach the insulation to the rafter scab board by the paper flange so as not to compress the fiberglass.

Batts and blankets insulation often comes with a vapor retardant facing and some varieties. Do not use plastic sheeting in this case. Staple them directly to the roof decking for better insulating roof rafters. If your attic is going to be converted into livable space then you will need to insulate the roof rafters.

How to insulate an unfinished attic preparing an attic for insulation. 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. Installing a vapor barrier. Place planks 1 by 6 or 1 by 8 or plywood sheaths across floor joists to improve.

Garages built without attics are. Hire a pro to install spray foam insulation. To install the air chutes staple them directly to the roof decking. 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.

Install ventilation baffles into the space between the rafters before you install the insulation usually by stapling into place. Make the foundation part of the thermal mass of the conditioned space thereby reducing.