Make tile installation faster and easier with the Ardex 8+9 Rapid Waterproofing and Crack Isolation Compound. Best-in-class, this compound is a two-component, cement-based membrane and features a solvent-free blend of Portland cement and other hydraulic cements for the ultimate bond with tile and stone mortars. For use on both interior and exterior walls and floors, Ardex 8+9 sets in as little as 90 minutes, offers crack isolation up to 1/8" and provides excellent coverage. Easily applied with a paint roller or brush, it reduces the risk of efflorescence from the substrate and can be used in place of a shower pan liner.