PROVA Corner Outside Waterproof Corner for Sale ☑️ Skip to content
PROVA Corner Outside Waterproof Corner
PROVA Corner Outside Waterproof Corner
PROVA Corner Outside Waterproof Corner
PROVA Corner Outside Waterproof Corner
PROVA Corner Outside Waterproof Corner
PROVA Corner Outside Waterproof Corner

PROVA Corner Outside Waterproof Corner

$12.44
$12.44 - $321.25
$12.44
$9.95
$9.95 - $257.00
$9.95

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: 1 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

PROVA Corner Outside Waterproof Corner
PROVA Corner Outside Waterproof Corner
$9.95