Foam Board Insulation Attic Rafters

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.

Foam board insulation attic rafters.

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. 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. Use closed cell foam it green for attic rafters. 2 measure and cut the foam boards as.

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. 100 free of cfcs vocs penta bdes urea formaldehyde. Get your kits the easy to use spray foam kit. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.

Insulating boards are just one of the many types of foam insulation. It is an excellent installation option for the attic because it is lightweight easy to work with and offers high r values. 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. Consider using spray foam insulation as well to seal smaller cracks and gaps.

The best attic insulation. Unlike solid insulation products that require careful measurement cutting and fitting spray foam can cover even the most uneven surface instantly. Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces. Spray foam insulation that s convenient and easy to use.

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. Often the r value of fiberglass insulation is too low and requires the rafters to be retrofitted making foam board a better choice. Class i e 84 fire retardant meets building code spec. Hire a pro to install spray foam insulation.