1"x4'x8' STYROFOAM R5.0

1x4x8 Styrofoam R5.0: Durable closed-cell, moisture-resistant 1 inch thick, 4' wide, 8' long Styrofoam insulation board with an R-value of 5.0. Retains R-value after exposure to moisture, making it perfect for various insulation applications to enhance thermal performance. Ideal for walls, floors, and roofs in residential and commercial buildings, this Styrofoam board provides reliable insulation and durability. Easy to install and handle, it’s great for DIY projects and professional builders. (Brand may vary.)