wedi® Sealant 620 is a flexible, vapor-tight sealant designed for use within wedi waterproofing and steam shower systems. It is formulated to work in combination with wedi sealing tape to create secure, vapor-resistant connections in wedi® Subliner Dry Sheet waterproofing and wedi® Vapor 85 assemblies.
Compared to wedi® Joint Sealant, Sealant 620 has a thinner viscosity and darker color, allowing it to penetrate fabric membranes more effectively. This formulation supports vapor-tight performance in steam shower applications when used as part of the complete wedi system.
Key Features
- Vapor-Tight Sealant: Designed to support vapor control in steam shower assemblies.
- System-Specific Formulation: Engineered for compatibility with wedi® Vapor 85 Building Panels and Subliner Dry membranes.
- Sealing Tape Integration: Used to waterproof and affix wedi sealing tape over seams, overlaps, and fastener points.
- Membrane Penetration: Thinner viscosity allows the sealant to sink into fabric membranes for improved bonding.
- Not a Standalone Adhesive: Designed to be used in combination with wedi® Subliner Dry sealing tape reinforcing all seams and joints.
System Compatibility
- wedi® Vapor 85 Building Panels
- wedi® Subliner Dry Sheet Waterproofing
- wedi® Waterproof Sealing Tape
- wedi® Inside and Outside Corner Sealing Tape
- wedi® Vapor 85 Patch Kit for fastener locations
- wedi® Subliner Dry seam and overlap assemblies
Installation Notes
- Used between assembly components and beneath sealing tape.
- One 2.5 oz cartridge covers approximately one linear foot of sealing tape or overlap seam in Vapor 85 or Subliner Dry assemblies.
- Thinset mortar is also required as part of Subliner Dry installations.
- Refer to official wedi installation instructions for complete system requirements.
wedi® Sealant 620 is required for vapor-tight sealing in wedi® Vapor 85 and Subliner Dry assemblies and functions as a system component rather than a standalone construction adhesive.
