STYROFOAM™ Brand Tongue and Groove Insulation features tongue and groove edges on all four sides of 2 ft x 8 ft boards 1 in thick or less and on the long edges of all other boards. The lightweight, moisture-resistant and thermally efficient Type IV extruded polystyrene foam insulation is suited for a wide range of residential and commercial construction applications.
Nominal product information shown. Actual product may vary by (and not limited to) dimension, color, grain, etc. See store for details.