The Enerfoil 1 x 4' x 8' polyiso-faced rigid sheathing board provides excellent thermal resistance and is an efficient choice for insulation needs. It has an R-value of 6, making it effective for maintaining indoor temperatures. This polyisocyanurate foam product is designed to help lower construction costs by achieving high insulation performance with a smaller thickness compared to other types of insulation.
This makes it an ideal solution to insulate exterior walls effectively.,The Enerfoil 1 x 4' x 8' polyiso-faced rigid sheathing board provides excellent thermal resistance