3/4"x4'x8' STYROFOAM R3.8

3/4"x4'x8' Styrofoam R3.8: Closed-cell, moisture-resistant 3/4 inch thick, 4 feet wide, and 8 feet long Styrofoam insulation with an R-value of 3.8. This insulation retains its R-value even after exposure to moisture and freeze-thaw cycles, making it ideal for various construction projects requiring reliable thermal performance and durability. Perfect for insulating walls, roofs, and floors, this versatile Styrofoam board provides excellent energy efficiency and long-lasting performance in both residential and commercial buildings. (Brand may vary.)