How To Properly Insulate Attic Rafters

Batts and blankets insulation often comes with a vapor retardant facing and some varieties.

How to properly insulate attic rafters.

How to insulate an unfinished attic preparing an attic for insulation. Garages built without attics are. 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. Staple them directly to the roof decking for better insulating roof rafters.

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. Attach the insulation to the rafter scab board by the paper flange so as not to compress the fiberglass. If your attic is going to be converted into livable space then you will need to insulate the roof rafters. To install the air chutes staple them directly to the roof decking.

Airspace from the soffit to the ridge by installing a continuous air chute in each rafter bay. To install insulation. Install ventilation baffles into the space between the rafters before you install the insulation usually by stapling into place. Installing a vapor barrier.

Apply insulation between rafters when finishing an attic into a heated room or when building a cathedral ceiling in the home. Minimize thermal bridging and reduce heat loss through the foundation. Place planks 1 by 6 or 1 by 8 or plywood sheaths across floor joists to improve. If there is a floor you will need to remove it to properly insulate the roof rafters.

Do not use plastic sheeting in this case. 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. Use 3 8 inch heavy duty staples every six inches. To effectively ventilate your roof create a 1 in.

Place the plastic sheeting on top of the rolled insulation. Make the foundation part of the thermal mass of the conditioned space thereby reducing. Lay a two by four on top temporarily compressing the insulation to a manageable. To cut blanket style insulation place the product over a piece of plywood with its paper or foil side down.

How to install rafter insulation. You can use rigid foam panels or do as tom silva does with nearly all houses these days.