MAPEI’s Reinforcing Fabric is a strong, absorbent, flexible, alkali-resistant polyester reinforcing fabric for optional use with MAPEI’s Mapelastic AquaDefense, Mapelastic WaterStop, and Mapelastic Turbo membranes; Designed for installation under ceramic tile or stone in residential and commercial interior applications; Ideal for use over substrate areas such as cracks, coves, corners, and around drains when used with Mapelastic AquaDefense, Mapelastic WaterStop, and Mapelastic Turbo; Provides a durable, reliable barrier to water migration into adjacent areas; Can be easily cut to size with scissors or a razor knife; Excellent compatibility with all MAPEI cement- or epoxy-based grouts and mortars.