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Insulation and Cover Boards

RetroPlus Roof Board

RetroPlus™ Roof Board is a high-density roofing board made of expanded perlite and cellulosic fibers. To resist water absorption, the board is formed with components to block water penetration. The top (black) surface is sealed with TopLoc® coating to provide a strong surface for bonding bituminous and single ply membranes.

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