Superseal Polyethylene Vapor Retardant Waterproofing Membrane Seam Cloth (Tape) Roll 98.6 Ft x 5 Inches, Tile Subfloor Band for Ceramic Tile Application in Bathroom, Shower Flooring Underlayment

Product Features:

• Premium 3-Layer Construction: Superseal Seam Tape is manufactured from three layers of cross-laminated polyethylene with durable fleece fabric bonded to both sides. Measuring 5 inches (12.7 cm) wide and 98.6 feet (30 m) long, it delivers exceptional strength, flexibility, and long-term durability for waterproofing installations.
• Waterproof & Vapor-Tight: Engineered from high-quality waterproof materials, this seam cloth provides superior moisture protection and acts as a reliable vapor retarder, ideal for sealing corner seams, transitions, and movement joints in showers, bathrooms, kitchens, steam rooms, and other wet environments.
• Low Permeability Rating: Designed for demanding tile installations, this underlayment seam tape provides excellent vapor insulation, making it ideal for use under tile, stone, and over waterproofing membranes, ensuring long-lasting protection against humidity, mold, and structural moisture damage.
• Versatile Indoor Applications: Perfect for a wide range of residential and commercial projects, including laundry rooms, hot tub surrounds, spas, restaurants, hotel bathrooms, galleries, basements, wet rooms, and mall facilities, ensuring watertight reliability wherever waterproofing is required.
• Secure Bonding With Thinset: Superseal seam tape is designed for thin-set mortar installation, reinforcing underlayment joints and ensuring strong adhesion between membranes. Ideal for use with shower trays, prefabricated bases, waterproof wall panels, foam building boards, shower niches, and tile backer systems.
  

Product Description:

Built with high tensile strength, this membrane tape ensures dependable bonding and structural stability for tile, porcelain, ceramic, granite, marble, mosaic, and natural stone installations. Its premium materials meet the highest industry standards, offering exceptional reliability for professional or DIY applications.

Superseal Seam Cloth is a premium waterproofing membrane tape engineered to deliver exceptional performance in wet areas, tile installations, and demanding renovation projects. Featuring a high-strength 3-layer cross-laminated polyethylene core with fleece fabric on both sides, this 5" x 98.6' seam tape ensures superior adhesion, flexibility, and waterproof protection. Designed for use with thin-set mortar, it bonds securely to waterproofing membranes, underlayment systems, shower bases, building panels, and tiled surfaces, helping you create a fully watertight and vapor-tight shower enclosure.

Perfect for sealing gaps, seams, inside/outside corners, and transition joints, Superseal provides a robust moisture barrier that prevents leaks, mold growth, and structural deterioration. Its low permeability rating makes it ideal for residential and commercial environments exposed to high humidity, water spray, and steam—such as bathrooms, showers, kitchens, tubs, saunas, hot tub surrounds, spas, hotels, and commercial washrooms.

Easy to cut, position, and install, this seam tape offers seamless compatibility with a wide range of ceramic tile, porcelain tile, granite, marble, mosaic, and natural stone, making it an excellent choice for both small DIY projects and large-scale professional installations. Built to withstand long-term use and environmental stress, Superseal Seam Tape delivers outstanding waterproofing performance, making it an essential component for any tile underlayment system, shower waterproofing system, or home improvement project requiring reliable moisture protection and a flawless finish.