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GURU W-S Waterproof Sealant
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At a Glance
Quick Decision Guide
Sealant Type
MS Polymer
Cartridge Size
9.8 fl oz
Coverage
Up to 72 ft with a 0.16" Bead
Application
Waterproofing Systems
Flexible After Cure
Yes
Wet & Humid Cure
Yes
UV Resistance
High
Interior & Exterior
Yes
Why Choose This Product
Key Benefits
Flexible Seal
Remains flexible after curing to accommodate movement
Multi-Surface Bond
Adheres to wood, metal, PVC, aluminum, and brass
Wet Installation
Cures in wet and humid conditions
Chemical Resistance
Resists diluted acids, alkalis, saline solutions, and soapy water
UV Stable
Suitable for interior and exterior applications
Silicone-Free
Low-odor, non-staining MS polymer formulation
Product Information
Product Details
Specifications
Brand
GURUĀ®
Part Number
IGU6400
UPC
8436540762849
Product Type
Waterproof Joint Sealant
Sealant Type
MS Polymer
Cartridge Size
9.8 fl oz
Coverage
Up to 72 ft with a 0.16" Bead
Primary Applications
Seams, Corners, Transitions & Penetrations
Application Areas
Waterproofing Systems, Showers, Wet Rooms & Structural Construction
Compatible Materials
Wood, Metal, PVC, Aluminum & Brass
Flexible After Cure
Yes
Wet & Humid Cure
Yes
UV Resistance
High
Chemical Resistance
Diluted Acids, Alkalis, Saline Solutions & Soapy Water
Silicone-Free
Yes
Low Odor
Yes
Non-Staining
Yes
Incompatible Surfaces
Rubber, EPDM & Bitumen
Interior/Exterior Use
Yes
About This Product
MS Polymer Sealant for Waterproofing Systems
GURUĀ® W-S Sealant is an MS polymer sealant designed to seal seams, corners, transitions, and penetrations in waterproofing systems. It creates durable, flexible seals for showers, wet rooms, and other moisture-exposed assemblies while bonding to common construction materials used in tile installations.
Strong Adhesion to Common Building Materials
The sealant bonds to wood, metal, PVC, aluminum, brass, and other compatible construction materials without requiring a silicone-based formulation. It remains flexible after curing, allowing it to accommodate movement in waterproofing assemblies.
Reliable Performance in Wet Environments
W-S Sealant cures in wet and humid conditions and provides excellent resistance to UV exposure, diluted acids, alkalis, saline solutions, and soapy water. It is suitable for interior and exterior waterproofing applications where long-term flexibility and durability are required.
Product Resources
Documentation & Downloads
Common Questions
Frequently Asked Questions
What is GURU W-S Sealant used for?
It is designed for sealing seams, corners, transitions, and penetrations in waterproofing systems used in showers, wet rooms, and other moisture-exposed installations.
What materials does GURU W-S Sealant bond to?
It bonds to wood, metal, PVC, aluminum, brass, and other common construction materials used in waterproofing and tile installations.
Can W-S Sealant cure in wet conditions?
Yes. The MS polymer formulation cures in wet and humid environments, making it suitable for waterproofing applications.
Is GURU W-S Sealant suitable for outdoor use?
Yes. The sealant offers high UV resistance and can be used in both interior and exterior waterproofing assemblies.
How much coverage does one cartridge provide?
One 9.8 fl oz cartridge provides up to 72 feet of coverage when applying a 0.16-inch bead.
What chemicals is the sealant resistant to?
It resists diluted acids, alkalis, saline solutions, and soapy water after curing.
Can GURU W-S Sealant be used on EPDM or rubber?
No. The manufacturer does not recommend using it on rubber, EPDM, or bitumen surfaces.
Is this a silicone sealant?
No. W-S Sealant is a silicone-free MS polymer sealant with a low-odor, non-staining formulation.