ARDEX SK-175 Waterproofing Membrane and Vapor Retarder Seam Tape, Tile Subfloor Band for Ceramic Tile Application in Bathroom, Shower Flooring Underlayment

Product Features:

• Dual Function Protection: Engineered as a waterproofing membrane and vapor retarder, ARDEX SK-175 provides essential moisture management and steam resistance in wet areas.
• Premium Construction: Made from durable polyethylene with a high-performance fleece webbing for superior bonding with ARDEX thin-set mortars.
• Versatile Application: Suitable for use behind tile and stone in showers, bathrooms, steam rooms, swimming pools, kitchens, and other wet or high-moisture environments.
• Reliable Seam Reinforcement: Ideal for sealing seams, transitions, and critical areas in waterproofing assemblies, ensuring long-term durability and system integrity.
• Tile-Ready Surface: Designed for direct application under ceramic, porcelain, mosaic, and natural stone tiles without additional preparation steps.
• Commercial Grade Performance: Approved for demanding commercial applications such as steam showers and pool environments, with a low perm rating to meet code requirements.
• Fast and Easy Installation: 5" x 16' (5m) roll size makes it easy to handle and apply in both new builds and renovations, saving time during installation.
• Compatible with ARDEX Systems: Seamlessly integrates with ARDEX 8+9, S 1-K, and other ARDEX waterproofing systems for a complete substrate protection solution.

Product Description:

The ARDEX SK-175 Waterproofing Membrane and Vapor Retarder Seam Tape is a high-performance solution designed to protect tile and stone installations in moisture-sensitive areas. This sheet-applied membrane is constructed from a durable polyethylene core laminated with a non-woven fleece webbing on both sides, allowing for an exceptional bond to ARDEX polymer-modified mortars.

ARDEX SK-175 serves as both a waterproofing barrier and a vapor retarder, making it the ideal choice for residential and commercial installations in steam showers, wet rooms, kitchens, bathrooms, laundry rooms, and swimming pools. Its low perm rating makes it fully compliant for commercial steam applications, while its flexibility and strength provide long-lasting protection in areas subject to water exposure and humidity. The membrane is easy to embed into mortar beds, and its 5-inch width is perfect for sealing transitions, corners, seams, and joints—reinforcing the most vulnerable parts of a waterproofing system.

Whether you're working on a new construction or a renovation project, ARDEX SK-175 delivers reliable waterproofing and vapor control beneath ceramic tile, porcelain, natural stone, or glass mosaic surfaces. Compatible with other ARDEX waterproofing and tile-setting products, this membrane ensures a complete and secure installation with professional-grade performance.

ARDEX SK 175TM Waterproofing Membrane and Vapor Retarder for Tile & Stone Installations is a pliable, sheet applied, bonded waterproof membrane and vapor retarder. ARDEX SK 175 is constructed of polyethylene with a high-performance fleece webbing to securely bond the membrane using ARDEX mortars prior to the installation of tile or stone in areas requiring topside waterproofing and vapor retarding. Tiles can be installed directly onto ARDEX SK 175. ARDEX SK 175 has an acceptable perm rating for commercial steam showers and is ideal for use in swimming pools.