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PROVA Corner Outside Waterproof Corner

PROVA Corner Outside Waterproof Corner

$34.94
$34.94 - $336.25
$34.94
$27.95
$27.95 - $269.00
$27.95

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.
Specifications

Thickness: 25.59 mil (0.65 mm)
Dimensions: 4.5" x 2.25" x 3.5" (11.43 cm x 5.72 cm x 8.89 cm)
Material: Polypropylene
Warranty: Limited Lifetime (T&Cs Apply)
Certification: IC-ES Certified (Listing No. ESR-3603)
Setting Material: Premium polymer modified thinset mortar required.

Approvals:
ASTM D4068-01 (Annex 2) - Waterproofness
ANSI A118.10 (section 4.1) - Fungus and microorganism resistance
ASTM E96 (Procedure E) - Water vapor permeance

Downloads

Installation Instructions: PROVA Mat Installation Instructions.pdf
Product Sheet: PROVA Mat Product Sheet.pdf
Safety Data Sheet: PROVA Corner & PROVA Pipe Seal Safety Data Sheet.pdf
Warranty: PROVA Tile Installation Products Lifetime Warranty.pdf

Select Pack Size: 4 pack
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Easy Pre-Formed Outside Waterproof Corners

Easy Pre-Formed Outside Waterproof Corners

  • Perfectly Formed for Outside Corners – Pre-shaped 90° corner fits shower curbs, benches, and other exterior transitions without cutting or folding.

  • 100% Waterproof Protection – Creates a secure, watertight seal over exposed corner transitions where leaks are most likely to form.

  • Ideal for Wet-Area Applications – Designed for curbs, bench edges, niches, and shower perimeters in tiled bathrooms and wet rooms.

  • Fast, Clean Installation – Preformed design reduces installation time while ensuring professional, consistent results.

  • Engineered for PROVA Systems – Integrates seamlessly with PROVA Mat, PROVA Joint & PROVA Inside Corners for a complete, reliable waterproofing assembly.

  • Durable & Flexible Material – Tear-resistant and adaptable to movement, maintaining a lasting watertight barrier through thermal and structural shifts.

  • Factory-Formed Reliability – Delivers uniform, tested waterproofing performance that’s difficult to achieve with hand-cut membrane corners.

  • Lifetime System Warranty – Backed by the PROVA Lifetime Warranty when installed as part of the PROVA Mat Waterproofing System.

Testimonials