GURU® W-S Sealant is an MS polymer–based waterproof joint sealant formulated for sealing seams, transitions, and penetrations within tile waterproofing systems and construction assemblies. It is designed for use with GURU Water-Stop systems and helps maintain continuous waterproofing at joints, corners, and connection points.

The sealant provides durable bonding across common construction substrates and remains elastic after curing, supporting consistent waterproofing in showers, wet rooms, and structural applications.

Key Features

• Waterproof and UV Resistant: Suitable for interior and exterior installations exposed to moisture and light.
• Fast Curing in Wet Conditions: Cures reliably while maintaining elasticity and bond strength.
• Strong Multi-Surface Adhesion: Bonds to wood, metal, PVC, aluminum, brass, and similar construction materials.
• Chemical Resistance: Resists diluted acids, alkalis, saline solutions, and soapy water.
• Joint Sealing for Waterproofing Systems: Used to seal membrane seams, corners, and penetrations where waterproofing continuity is required.
• Clean Application Properties: Silicone-free, low odor, and non-staining.
• High Coverage Rate: Provides up to 72 ft of coverage per cartridge with a 0.16 in bead.

Specifications

Specification	Details
Type	MS polymer waterproof sealant
Size	9.8 fl oz cartridge
Coverage	Up to 72 ft (0.16 in bead)
Recommended Use	waterproofing, wet rooms, structural construction
Adhesion Properties	Wood, metal, PVC, aluminum, brass
Chemical Resistance	Diluted acids, alkalis, saline solutions, soapy water
UV Resistance	High
Incompatible Surfaces	Not suitable for rubber, EPDM, bitumen

GURU® W-S Sealant provides flexible joint sealing and waterproof bonding for tile waterproofing systems and construction assemblies requiring moisture resistance and durable adhesion.