GURU® WATER-STOP Waterproofing Membrane is a bonded sheet membrane designed for waterproofing and crack isolation in tiled wall and floor assemblies. It meets and exceeds ANSI A118.10 (IAPMO File 9205) and ANSI A118.12 (IAPMO File 9990) requirements and is accepted by IAPMO.
Constructed as a highly flexible, low-perm, multi-layer steam barrier, WATER-STOP is a 20-mil thick membrane used beneath ceramic and natural stone tile coverings. It provides moisture protection and in-plane crack isolation in both interior and exterior installations for new construction and renovation projects.
Key Features
- Waterproofing and Crack Isolation: Functions as both a waterproofing membrane and a standard crack isolation layer.
- ANSI-Compliant Performance: Meets and exceeds ANSI A118.10 and ANSI A118.12 standards.
- Low Perm Rating: Suitable for use in steam shower applications.
- Multi-Layer Sheet Construction: Designed for flexibility and bonded installation under tile.
- Interior and Exterior Use: Approved for wall and floor applications.
Applications
- Shower walls
- Tub surrounds
- Bathrooms
- Steam showers
- Commercial kitchens
- Residential kitchens
Available Sizes
| Part Number | Size | Thickness |
|---|---|---|
| IFU5100 | 3’ 3” x 16’ 5” (54 sq. ft.) | 20 mil |
| IFU5113 | 3’ 3” x 32’ 10” (108 sq. ft.) | 20 mil |
| IFU5200 | 3’ 3” x 98’ 5” (323 sq. ft.) | 20 mil |
GURU® WATER-STOP Waterproofing Membrane provides bonded waterproofing, crack isolation, and low-perm vapor control for tile and stone installations across residential and commercial environments.
