Mapei's Planiseal VS Epoxy Moisture-Reduction Barrier, Part B is the hardener component of a two-part system designed to control moisture vapor transmission in concrete substrates. When combined with Part A, the resin component, this high-performance epoxy creates a durable, seamless moisture barrier that effectively protects floor coverings like tile, wood, and carpet from damage caused by moisture. Ideal for use in both residential and commercial flooring applications, Planiseal VS ensures that concrete floors remain stable and moisture-free, even in areas with high moisture content, such as basements, kitchens, and bathrooms. When Part B is mixed with Part A, the result is a fast-setting, robust moisture-reduction barrier that forms a secure bond with concrete surfaces. This combination prevents moisture vapor from rising through the slab and compromising flooring materials. The epoxys rapid curing properties allow for quicker project completion, providing long-lasting moisture protection and a reliable foundation for subsequent flooring installations. Planiseal VS delivers high performance and efficiency in moisture-sensitive environments.