Waterproof every corner with precision. The PROVA Preformed Outside Corner provides quick, dependable waterproofing for outside-angle corners on shower benches, curbs, and other wet-area transitions. Designed for professional tile installers, this pre-shaped corner eliminates on-site cutting and folding for a watertight seal that prevents leaks, mold, and mildew.

• Pre-Formed 90° Out Angle Corner – Factory-formed from PROVA Mat material for a perfect fit with no trimming or awkward folds.
• Reliable Waterproofing Seal – Protects outside corner transitions on shower curbs, benches, and ledges from water intrusion.
• Mold & Mildew Protection– Resists microbial and fungal growth 
• Time-Saving Design – Simplifies one of the most detailed parts of waterproofing, ensuring fast, consistent, professional results.
• Thin, Smooth Profile – 25.59 mil (0.65 mm) thick - minimizes build-up
• Seamless System Integration – Designed for compatibility with PROVA Mat, PROVA Joint, and PROVA Inside Corners
• Installer-Approved – Bonds easily with polymer-modified thinset mortar
• Lifetime System Warranty – Covered by PROVA Tile Installation Products Warranty when part of the PROVA Mat Waterproofing System.