Installing Rigid Foam Insulation In Attic

When installing foam insulation boards in the attic make sure you start from one corner and work your way around the room.

Installing rigid foam insulation in attic.

With the use of rigid insulation homeowners in the northern areas of the country are able to combat heat loss through their attic the rigid insulation is a foam polystyrene material that comes in various thickness to add to the current r value of the fiberglass insulation between the rafters. A table saw will also cut the board but it. When installing rigid insulation in an attic to be finished as a living space you must provide a route by which hot air. Fasteners should be long enough to penetrate in to the rafter a minimum of inch.

Add weatherstripping around the perimeter and a sweep to the door of a walk up attic. The foam sheets are butted next to each other and taped to prevent air infiltration. Foam insulation boards can be attached to concrete walls as well and in such a case care should be taken not to chip the cement. Use a box cutter or a table saw or circular saw to save time when cutting and installing large quantities.

Fasten foam insulation boards to the interior of the rafters using screws or nails with 1 inch minimum washers or caps. You can use a utility knife to cut using the same cut and snap process you use with drywall. It will degrade its r value. Cover the insulation with a vapor barrier before you install it.

As an exterior sheathing rigid foam is installed on the outside of the house just under the siding. Use a chalk line or t square to mark where it needs to be cut. The superattic system creates a continuous air and insulation barrier directly beneath the attic roof with no thermal bridging to compromise energy. Measure the space between rafters and cut the board to fit.

All foam boards absorb water vapor. Affix rigid foam insulation to the attic side of the hatch or door. When installing the foam use caulk or tape for maximum insulation between the material and the board or floor. The superattic system utilizes proprietary silverglo rigid foam insulation panels to fully seal and insulate the attic directly beneath the roof rafters and directly inside the gable ends.

In addition to installing the foam board on the underside of the roof deck you can attach it to the bottom edges of the. When installing a foil faced foam board insulation. Alternate fasteners may be used with the type and length as recommended by their manufacturer for securing foam plastic insulating sheathing. How do you install rigid foam board.

Attic hatch or door.