Installing Attic Insulation In 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.

Installing attic insulation in rafters.

Install ventilation baffles into the space between the rafters before you install the insulation usually by stapling into place. You can use rigid foam panels or do as tom silva does with nearly all houses these days. The will hold open an air gap of approximately 1 inch to allow airflow past a layer of insulation. Begin at a wall and work toward the center of the attic floor or the entryway carefully placing insulation between joists and ensuring a snug fit.

Cut the insulation roll or batt to fit the length of the framing cavity if necessary. You can buy air ducts that staple to the inside of your roof above the eave vents and fit between the rafters. If your attic is going to be converted into livable space then you will need to insulate the roof rafters. Place the insulation with the facing side down on a piece of scrap plywood.

He was very professional and informed us of different options for materials and processes. Install batting between the attic s floor joists. Set a t square or metal straightedge over the insulation and press it down firmly. The basic installation steps are the same for walls ceilings floors and roofs in wood frame houses.

Although the paper or foil backing of the insulation is a vapor barrier the added visquine covers completely with no breaks making sure no moisture forms in the cavity. Visquine a painter s drop cloth over the insulation and across the face of the rafters. Once the insulation is in place between all the rafters staple up a vapor barrier of 6 ml. Hire a pro to install spray foam insulation.

To install insulation batts and blankets. Alternate fasteners may be used with the type and length as recommended by their manufacturer for securing foam plastic insulating sheathing. Push the insulation in place between the rafters but be careful not to compress the material. Fasteners should be long enough to penetrate in to the rafter a minimum of inch.

Fasten foam insulation boards to the interior of the rafters using screws or nails with 1 inch minimum washers or caps. The ones i ve used are made of styrofoam and iirc they cost around 2. Revival energy assisted us with obtaining our energy rebates also. For insulation to reach its full potential for preventing warm air migration it must maintain the.