Foam Board Insulation Attic Rafters

The best attic insulation.

Foam board insulation attic rafters.

Unlike solid insulation products that require careful measurement cutting and fitting spray foam can cover even the most uneven surface instantly. Foam board insulation is easy to cut with a circular saw with a masonry blade or scored with a utility knife and snapped like you would drywall. You can use foam board in the attic. Class i e 84 fire retardant meets building code spec.

Select rigid foam insulation boards that are at least 1 2 inch less in thickness than the rafter space is deep if you plan to finish the attic as living space. Insulating boards are just one of the many types of foam insulation. 2 measure and cut the foam boards as. Get your kits the easy to use spray foam kit.

The superattic system creates a continuous air and insulation barrier directly beneath the attic roof with no thermal bridging to compromise energy performance. 100 free of cfcs vocs penta bdes urea formaldehyde. R value of 7 in 1 inch 97 closed cell foam. But a 2x6 rafter with a 1 5 vent space would give you the ability to put 4 of rigid insulation r 26 in that space which was not filled.

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. Hire a pro to install spray foam insulation. It is an excellent installation option for the attic because it is lightweight easy to work with and offers high r values. 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.

Polyurethane or polystyrene spray foams can provide thorough coverage to roof rafters and attic walls in much less time than is needed for other materials. Consider using spray foam insulation as well to seal smaller cracks and gaps. Spray foam insulation that s convenient and easy to use. The 4 of rigid foam under the rafters at least give you r26.

Use closed cell foam it green for attic rafters. To attach the insulation you can use screws with large washers a special adhesive made for adhering foam board insulation or for smaller pieces you can seal them in with caulk or spray foam.