Home > Shop > Drywall & Insulation > Insulation & Vapour Barrier > Rigid Foam > 2x8x1-1/2" CLADMATE CM20 SHIPLAP (R7.5) 2x8x1-1/2" CLADMATE CM20 SHIPLAP (R7.5) Item #: 05056040 Mfr #: 112CM28T3 $28.44 each Checking Inventory Add to Cart Overview: TYPE 3 - 20PSI