GURU Water-Stop Waterproofing Band, 5-1/2" and 13-1/3" Side by Side

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GURU W-S Band Waterproofing Reinforcement is a trusted solution designed to securely complete waterproofing at critical floor-to-wall joints. Perfect for contractors, tile installers, and DIY enthusiasts, this band provides a durable seal that prevents water intrusion in showers, terraces, balconies, and other wet areas. Manufactured to meet strict industry standards, it offers reliable, long-lasting protection against moisture damage in both residential and commercial tile installations.

Key Features & Benefits of GURU W-S Band

Durable Waterproof Seal: Enhances your waterproofing system with a strong, flexible band that prevents leaks at joints prone to water exposure.
Industry-Approved Standards: Complies with ANSI A118.10, ANSI A118.12, TCNA Handbook, UPC®, and Canadian Plumbing Code for guaranteed performance.
Simple Installation: Designed for easy application on floor-to-wall transitions, ideal for waterproofing showers, balconies, terraces, and kitchens.
Versatile for Interior & Exterior Use: Suitable for various wet area applications, including steam rooms, pool surrounds, and more.
High-Quality Membrane Material: Made from GURU W-S Membrane, a 20-mil thick, low-perm, multi-layer steam barrier membrane ensuring superior moisture protection.

GURU W-S Waterproofing Band Specifications

Part No.	Size	Thickness
IGU6100	5-1/2” x 65’ 8”	20 mils
IGU6200	13-1/3” x 65’ 8”	20 mils

Part of the GURU W-S Membrane family, this waterproofing band offers a flexible, low-perm steam barrier that protects tile and stone installations from moisture, cracking, and water damage. Ideal for showers, steam rooms, kitchens, terraces, and balconies, it provides peace of mind for durable, professional-grade waterproofing.

Complete your waterproofing projects with GURU W-S Band — the trusted choice for contractors and tile installers aiming for lasting moisture protection. Add it to your toolkit today.

Frequently Asked Questions

What is GURU W-S Band Waterproofing Reinforcement?

GURU W-S Band Waterproofing Reinforcement securely completes waterproofing at critical floor-to-wall joints, creating a durable seal that prevents water intrusion in showers, terraces, balconies and other wet areas.

Which industry standards does it meet?

It complies with ANSI A118.10, ANSI A118.12, the TCNA Handbook, UPC® and the Canadian Plumbing Code for guaranteed performance in both residential and commercial installations.

Where can I use GURU W-S Band?

Use it in showers, terraces, balconies, steam rooms, pool surrounds, kitchens and any other wet area that requires a reliable waterproof joint seal.

What sizes and part numbers are available?

Part No. IGU6100 – 5-1/2” x 65’ 8” (20 mils)

Part No. IGU6200 – 13-1/3” x 65’ 8” (20 mils)

Which membrane should I pair it with?

It is made from GURU W-S Membrane and can be used with GURU W-S Membrane or GURU G-FLEX Uncoupling Membrane.