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Mapelastic SRW is a water-based, cold-applied membrane designed to protect and waterproof concrete in demanding environments such as foundations. Contractors can apply it by spray or roller. When cured, it forms a durable, impermeable membrane that bonds to concrete. It can withstand up to 10 atm or 150 psi of hydrostatic head. MAPEI Corp. 800-426-2734. www.mapei.us