1-1/2"x4x8 T&G STYROFOAM R7.5

1-1/2x4x8 T&G Styrofoam R7.5: Reliable closed-cell, moisture-resistant 1.5 inch thick, 4-foot wide, 8-foot long tongue and groove Styrofoam insulation with an R-value of 7.5. Retains R-value after exposure to moisture, ensuring secure and efficient thermal insulation. Ideal for walls, floors, and roofs in both residential and commercial buildings, this T&G Styrofoam board offers excellent durability and energy efficiency. Easy to install, it’s perfect for professional construction and DIY projects. (Brand may vary.)