FlintBoard® CV Polyisocyanurate Roof Insulation is a rigid board insulation specifically for use over sloped unventilated roof decks. FlintBoard CV is designed to provide thermally efficient insulation with uniform cross venting that promotes the air circulation required by many shingle manufacturers. FlintBoard CV allows heat to dissipate while providing a nailable surface and efficient insulation in a one-step process.

FlintBoard CV is available with an optional radiant barrier on the underside of the OSB nailing surface. The radiant barrier prevents most radiant heat transfer and reduces the temperature gradient across the polyiso board.