Guru Water-Stop Waterproofing Membrane 54 Sq Ft

Guru Water-Stop Waterproofing Membrane 108 Sq Ft

Guru Water-Stop Waterproofing Membrane 323 Sq Ft

Guru Water-Stop Waterproofing Membrane New Print

GURU Water-Stop Shower Waterproofing Membrane

Price Save $14.69

In Stock – 22 Available
Backordered, shipping soon

30 Day Returns

Secure payments

Quantity

[{"id":42578746015939,"title":"54 sq ft (3'3\" x 16'5\")","option1":"54 sq ft (3'3\" x 16'5\")","option2":null,"option3":null,"sku":"GURU-WS-MEMBRANE-54SF-IFU5100","requires_shipping":true,"taxable":true,"featured_image":{"id":42137534365891,"product_id":7645242360003,"position":2,"created_at":"2024-05-07T10:29:04-05:00","updated_at":"2025-05-19T12:41:40-05:00","alt":"Guru Water-Stop Waterproofing Membrane 54 Sq Ft","width":2048,"height":2048,"src":"\/\/tilethis.com\/cdn\/shop\/files\/product_guru-water-stop-waterproofing-membrane-54-sq-ft.png?v=1747676500","variant_ids":[42578746015939]},"available":true,"name":"GURU Water-Stop Shower Waterproofing Membrane - 54 sq ft (3'3\" x 16'5\")","public_title":"54 sq ft (3'3\" x 16'5\")","options":["54 sq ft (3'3\" x 16'5\")"],"price":9800,"weight":0,"compare_at_price":11269,"inventory_management":"shopify","barcode":"8436540769305","featured_media":{"alt":"Guru Water-Stop Waterproofing Membrane 54 Sq Ft","id":34544882385091,"position":2,"preview_image":{"aspect_ratio":1.0,"height":2048,"width":2048,"src":"\/\/tilethis.com\/cdn\/shop\/files\/product_guru-water-stop-waterproofing-membrane-54-sq-ft.png?v=1747676500"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":42578745950403,"title":"108 sq ft (3'3\" x 32'10\")","option1":"108 sq ft (3'3\" x 32'10\")","option2":null,"option3":null,"sku":"GURU-WS-MEMBRANE-108SF-IFU5113","requires_shipping":true,"taxable":true,"featured_image":{"id":42137534398659,"product_id":7645242360003,"position":3,"created_at":"2024-05-07T10:29:04-05:00","updated_at":"2025-05-19T12:41:40-05:00","alt":"Guru Water-Stop Waterproofing Membrane 108 Sq Ft","width":2048,"height":2048,"src":"\/\/tilethis.com\/cdn\/shop\/files\/product_guru-water-stop-waterproofing-membrane-108-sq-ft.png?v=1747676500","variant_ids":[42578745950403]},"available":true,"name":"GURU Water-Stop Shower Waterproofing Membrane - 108 sq ft (3'3\" x 32'10\")","public_title":"108 sq ft (3'3\" x 32'10\")","options":["108 sq ft (3'3\" x 32'10\")"],"price":18200,"weight":0,"compare_at_price":22175,"inventory_management":"shopify","barcode":"8436540763945","featured_media":{"alt":"Guru Water-Stop Waterproofing Membrane 108 Sq Ft","id":34544882417859,"position":3,"preview_image":{"aspect_ratio":1.0,"height":2048,"width":2048,"src":"\/\/tilethis.com\/cdn\/shop\/files\/product_guru-water-stop-waterproofing-membrane-108-sq-ft.png?v=1747676500"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":42578745983171,"title":"323 sq ft (3'3\" x 98'5\")","option1":"323 sq ft (3'3\" x 98'5\")","option2":null,"option3":null,"sku":"GURU-WS-MEMBRANE-323SF-IFU5200","requires_shipping":true,"taxable":true,"featured_image":{"id":42137534333123,"product_id":7645242360003,"position":4,"created_at":"2024-05-07T10:29:04-05:00","updated_at":"2025-05-19T12:41:41-05:00","alt":"Guru Water-Stop Waterproofing Membrane 323 Sq Ft","width":2048,"height":2048,"src":"\/\/tilethis.com\/cdn\/shop\/files\/product_guru-water-stop-waterproofing-membrane-323-sq-ft.png?v=1747676501","variant_ids":[42578745983171]},"available":true,"name":"GURU Water-Stop Shower Waterproofing Membrane - 323 sq ft (3'3\" x 98'5\")","public_title":"323 sq ft (3'3\" x 98'5\")","options":["323 sq ft (3'3\" x 98'5\")"],"price":50929,"weight":0,"compare_at_price":62410,"inventory_management":"shopify","barcode":"8436540769312","featured_media":{"alt":"Guru Water-Stop Waterproofing Membrane 323 Sq Ft","id":34544882450627,"position":4,"preview_image":{"aspect_ratio":1.0,"height":2048,"width":2048,"src":"\/\/tilethis.com\/cdn\/shop\/files\/product_guru-water-stop-waterproofing-membrane-323-sq-ft.png?v=1747676501"}},"requires_selling_plan":false,"selling_plan_allocations":[]}]

GURU Water-Stop Membrane is a professional-grade waterproofing membrane designed for tile installers and contractors to ensure effective shower waterproofing. This high-quality tile waterproofing membrane delivers superior protection against moisture infiltration, making it ideal for use in residential and commercial shower systems, steam showers, and wet areas.

Key Features of GURU Water-Stop Shower Waterproofing Membrane

Certified Quality: Meets ANSI A118.10 and ANSI A118.12 standards; IAPMO accepted for reliable performance.
Highly Flexible & Durable: 20 mil thick multilayer membrane offers crack isolation and long-lasting waterproofing.
Versatile Application: Suitable for interior and exterior walls and floors, including showers, tub surrounds, kitchens, balconies, and more.
Easy Installation: Designed for quick application with modified thin-set mortar compatible with tile and stone surfaces.
Water-Stop Technology: Provides a watertight barrier that prevents leaks, mold, and structural damage in wet areas.
Steam Shower Compatible: Low perm rating makes it ideal for steam shower waterproofing applications.

Specifications

Specification	Details
Thickness	20 mil
Certifications	ANSI A118.10, ANSI A118.12, IAPMO
Compatible Substrates	Concrete, masonry, cement mortar beds, gypsum wallboard, exterior plywood, cement backer board, ceramic tile & stone, fiber-cement, terrazzo
Application	Shower walls, tub surrounds, steam showers, kitchens, balconies, pool areas

GURU W-S Membrane Sizes

Part No.	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

Usage Tips for Optimal Shower Waterproofing

Apply GURU Water-Stop membrane over clean, sound substrates using a modified thin-set mortar compliant with ANSI A118.4 or equivalent standards.
Ensure seams and corners are properly sealed with compatible waterproofing tape or accessories.
Use in combination with GURU waterproofing products® for a complete, trusted shower waterproofing membrane system.
Follow manufacturer guidelines carefully to maximize crack isolation and moisture protection.

Protect your installations with the trusted GURU Water-Stop Shower Waterproofing Membrane. Order now to ensure superior, long-lasting waterproofing performance on your next project.

Frequently Asked Questions

What thickness is the GURU Water-Stop membrane?

The membrane is 20 mil thick multilayer construction for crack isolation and long-lasting waterproofing.

Which certifications does this membrane meet?

It meets ANSI A118.10 and ANSI A118.12 standards and is accepted by IAPMO for reliable performance.

On which substrates can I install the membrane?

Compatible substrates include concrete, masonry, cement mortar beds, gypsum wallboard, exterior plywood, cement backer board, ceramic tile and stone, fiber-cement and terrazzo.

What areas and applications is it suitable for?

Use on shower walls, tub surrounds, steam showers, kitchens, balconies and pool areas in both residential and commercial installations.

How should I install the GURU Water-Stop membrane?

Apply over a clean and sound substrate using a modified thin-set mortar compliant with ANSI A118.4. Seal all seams and corners with compatible waterproofing tape or accessories. For best results, combine with other GURU waterproofing products.