PROVA Mat Waterproofing Membrane is a thin, flexible, low-perm sheet membrane that creates a watertight barrier for tile showers, bathrooms, and wet areas—protecting walls and floors from leaks, mold, and costly moisture damage. Trusted by both installers and homeowners, it delivers fast, clean installation and lifetime waterproof confidence in every project.

• 100% Waterproof & Mold-Resistant – Prevents leaks and microbial growth beneath tile.
• Low Vapor Permeance (0.109 perms) – Effective vapor retarder for showers and steam applications.
• ICC-ES Certified – Meets ANSI and ASTM standards for proven reliability.
• Ultra-Thin Profile (0.43 mm / 16.93 mil) – Provides a smooth, even surface for tile installation.
• Versatile Applications – Ideal for tile showers, tub surrounds, laundries, saunas, and residential steam showers (install over PROVA Board Plus+).
• Part of the Complete PROVA System – Integrates seamlessly with PROVA Joint, Pipe Seal, and Corners for total, certified protection.
• Lifetime System Warranty – Backed by PROVA Tile Installation Products for lasting confidence (T&Cs apply).
• Sized for North America – 3.28 ft (1 m) wide; roll lengths vary by size.