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PROVA Joint Waterproofing Membrane Band

PROVA Joint Waterproofing Membrane Band

$31.19
$31.19 - $866.88
$31.19
$24.95
$24.95 - $693.50
$24.95

PROVA Joint is a thin waterproof membrane tape designed to seal critical seams, corners, and transitions in PROVA waterproofing and underlayment applications, preventing leaks, mold, and costly moisture damage to walls, floors, and subfloors. By using PROVA Joint, installers can waterproof critical areas quicker and easier—without folding or overlapping large membrane sheets—ensuring lasting protection and professional results.

  • 100% Watertight Protection – Engineered to seal joints, corners, and transitions in PROVA Mat and all PROVA Tile Underlayment Systems.
  • System Compatible – Creates a continuous barrier that prevents leaks and protects tiled floors and wall assemblies.
  • Mold-Resistant – Will not support mold, mildew, or microbial growth.
  • Installer-Friendly Width – 5" wide to ensure the required 2" overlap is achieved for every seam.
  • Fast, Clean Installation – Easily treat seams and transitions without bunches and creases.
  • Ultra-Thin Profile – Just 13.78 mil (0.35 mm) thick for minimal buildup 
  • ICC-ES Certified – Tested and approved to ANSI waterproofing standards
  • Lifetime System Warranty – Guaranteed protection when installed as part of the PROVA Mat Waterproofing System (T&Cs Apply).
Specifications

Thickness: 13.78 mil (0.35 mm)
Width: 5 inches (127 mm)
Length: 25ft & 82ft rolls available
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 Mat & PROVA Joint Safety Data Sheet.pdf
Warranty: PROVA Tile Installation Products Lifetime Warranty.pdf

Select Length: 25 ft
Select Pack Size: 1 pack
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Smarter Seams with Waterproof Membrane Band

Smarter Seams with Waterproof Membrane Band

  • Installer-Friendly – Easily treat seams and wall-to-floor transitions without needing to wrap large membrane sheets - avoiding bunching and loose corners.

  • Optimized 5" Width – Ensures 2" overlap is achieved on each side of transitions, creating a completely waterproof seam without excess buildup.

  • System-Compatible Waterproofing – Works seamlessly with PROVA Mat, PROVA Corners, and all PROVA Tile Underlayment Membranes to seal seams and transitions for a continuous watertight barrier.

  • Strong, Permanent Bond – Quickly and securely adheres with polymer modified thin-set mortar, creating a lasting, waterproof bond.

  • Low Vapor Permeance – Ideal for showers and residential steam rooms.

  • Certified Reliability – ICC-ES Approved to ANSI A118.10 for proven performance.

  • Lifetime System Warranty – Backed by the PROVA Tile Installation Products Lifetime Warranty (when part of the PROVA Mat Waterproofing System - T&Cs Apply)

Testimonials