USG Durock™ Brand Liquid Waterproofing & Crack Isolation Membrane is a high-performance, ready-to-use acrylic polymer-based membrane designed for interior tile and stone installations. Engineered for use over properly prepared substrates—including concrete, cement board, and masonry—this low-permeance membrane delivers exceptional waterproofing and anti-fracture protection up to 1/8" substrate movement. Its quick-drying formula and compatibility with ANSI A118.10 and A118.12 make it a professional-grade choice for wet area applications like showers, steam rooms, and backsplashes.

Key Features & Benefits

Dual Certification: Meets ANSI A118.10 for waterproofing and A118.12 for crack isolation.
Low Permeance: Perm rating of 0.12 per ASTM E96 (Method E)—qualifies as a vapor retarder in steam showers.
Flexible Film: Bridges substrate movement up to 1/8" (3 mm) for superior anti-fracture protection.
Rapid Dry Time: Dries in approximately 1–2 hours per coat under standard conditions (73°F, 50% RH).
Roll-On Application: Apply with roller, trowel, or brush—no mixing required.
Tile-Ready Surface: Bonds with modified or unmodified thin-set mortars.
VOC-Compliant: Low VOC formulation for safe indoor use.

Specifications

Type	Acrylic-Based Liquid-Applied Membrane
Use	Interior Wet Areas, Steam Rooms, Showers
Crack Isolation	Up to 1/8" (3 mm)
Perm Rating	0.12 (ASTM E96, Method E)
Dry Time	1–2 hours per coat (73°F / 50% RH)
Color	Bright Blue (Dries to Blue)
VOC Content	<1 g/L (Low VOC)
Packaging	1 Gallon & 3.5 Gallon Buckets
Certifications	Meets IAPMO & ICC-ES Standards, UPC Listed

Get long-lasting, code-compliant waterproofing performance with USG Durock™ Liquid Waterproofing & Crack Isolation Membrane. Trusted by contractors for fast installs and durable results. Order today and protect your tile installations the professional way.

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USG Durock Liquid Waterproofing & Crack Isolation Membrane