Foam Board Insulation Attic Rafters

Class i e 84 fire retardant meets building code spec.

Foam board insulation attic rafters.

As for iso board vs. Measure the length and width between two rafters in your attic and transfer the measurements to a 4 ft by 8 ft of rigid foam insulation board. To simplify things and save a lot of time cutting and fitting you could just nail the iso board to the bottom of the rafters. Rigid foam board also known as foam board or insulation board can be an excellent option for insulation.

Typical thicknesses range from inch to 2 inches with estimated r values of r 3 for the inch to r 10 for the 2 inch board. Seal the seams with contractor s tape and seal the foam board edges to the wall with spray foam. The best attic insulation. Some of the most reviewed foam board insulation are the silverboard 24 in.

Get your kits the easy to use spray foam kit. 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. A 4 by 8 board weighs next to nothing and can easily be cut to fit. Spray foam insulation that s convenient and easy to use.

The superattic system creates a continuous air and insulation barrier directly beneath the attic roof with no thermal bridging to compromise energy. 100 free of cfcs vocs penta bdes urea formaldehyde. It is lightweight and easy to work with. 5 panels with 97 reviews.

Spray foam the iso board would be a lot cheaper especially if this is a diy project. 2 snap a chalk line between the length measurements.