CM20 3" Styrofoam Insulation 2' x 8' R15

Cladmate CM20 insulation is a extruded polystyrene foam board / sheet that helps reduce thermal bridging in walls and attics. Easy to handle, cut and install. Above and below grade, under slab, interior and exterior use.

3" thick sheets are R15 rated. The R-value for insulation measures how well insulation materials can resist heat - the higher the R-value, the greater the insulation performance.