Rigid Foam Insulation Attic Rafters

Install it anywhere from the roof to the foundation.

Rigid foam insulation attic rafters.

Class i e 84 fire retardant meets building code spec. Rigid foam board also known as foam board or insulation board can be an excellent option for insulation. Choose rigid insulation wisely and consider the effect its characteristics will have on the performance of the your project overall product cost and the best way to get the bang for your buck. 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.

Foam blocks airflow needs no vapor barrier and has a higher r value per inch than loose fill or batts so you ll get more protection with less depth. Get your kits the easy to use spray foam kit. Use closed cell foam it green for attic rafters. The best attic insulation.

Then cover the foam with drywall as required for fire safety. Spray foam insulation that s convenient and easy to use. Hire a pro to install spray foam insulation. 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.

They keep your home at a comfortable temperature without the need to crank your heat. 100 free of cfcs vocs penta bdes urea formaldehyde. With spray foam unlike with loose fill or batts you must cover the soffit vents they aren t needed to keep the roof cool. Rigid foam panels are about 0 10 0 15 square foot r.

It is lightweight and easy to work with. 2 measure and cut the foam boards as. 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. A 4 by 8 board weighs next to nothing and can easily be cut to fit.

You can use rigid foam panels or do as tom silva does with nearly all houses these days. R value of 7 in 1 inch 97 closed cell foam. Rigid foam insulation packs a lot of r value into a thin package but not all rigid foam performs the same. You can even place it under the foundation slab.

Unlike solid insulation products that require careful measurement cutting and fitting spray foam can cover even the most uneven surface instantly. Rigid foam insulation also known as insulating boards provide high r values. Rigid insulation is one of the best tools to reduce your energy costs. The superattic system creates a continuous air and insulation barrier directly beneath the attic roof with no thermal bridging to compromise energy performance.