ARDEX TLT 709 Lightweight Polyethylene Vapor Retardant Waterproofing Membrane Seam Tape Roll 32.8 Ft x 4.9 In, Band for Stone Ceramic Tile Application in Bathroom, Shower Flooring Underlayment (40063)

Product Features:

• Multilayer Waterproof Construction: Modified polyethylene core with non-woven polypropylene on both sides supports strong thin-set adhesion and lasting sealing.
• Optimized Roll Dimensions: Measures 5 mil thick, 4.9 inches wide, and 32.8 feet long for efficient seam coverage across waterproof tile installations.
• Lightweight Chemical Resistance: Lightweight, waterproof, and chemically resistant material provides structural support and dependable wet-area performance.
• Low-Permeability Vapor Protection: Helps control vapor and moisture in showers, steam rooms, bathrooms, kitchens, and high-humidity tile underlayment systems.
• Horizontal and Vertical Seam Sealing: Bonds membrane joints, transitions, and floor-to-wall connections with thin-set mortar before tile or stone installation.
• High-Tensile Flexible Bonding: Strong tensile performance helps maintain secure adhesion between waterproof membrane surfaces exposed to movement and stress.
• Wide Substrate Compatibility: Installs over concrete, plywood, cement slabs, and autoclaved aerated concrete, including intricate or irregular surfaces.
• Broad Tile and Stone Compatibility: Suitable beneath ceramic, porcelain, granite, marble, mosaic, glass, cement, and natural stone tile with thin-set mortar.
• Versatile Wet-Area Applications: Suitable for showers, laundry rooms, living rooms, hot tub surrounds, pools, restaurants, galleries, hotels, and malls.
• Complete System Integration: Works with waterproof membranes, corners, seals, shower bases, wall panels, and niches for professional or DIY installation.

Product Description:

ARDEX TLT 709 is a professional-grade waterproofing membrane seam tape designed to seal gaps, joints, transitions, and horizontal and vertical seams within ARDEX TLT shower waterproofing systems. Measuring 32.8 feet long, 4.9 inches wide, and 5 mil thick, it is manufactured from the same lightweight, waterproof material as the ARDEX TLT waterproofing membrane. Its advanced multilayer construction combines a modified polyethylene core with non-woven polypropylene fleece on both sides, promoting strong thin-set mortar adhesion while maintaining the flexibility and tensile strength required for dependable seam sealing.

This lightweight, chemically resistant seam tape helps connect waterproofing membrane sections and create a continuous watertight, vapor-retardant barrier beneath tile walls, floors, and flooring underlayment. Its low-permeability construction helps protect shower bases, shower trays, building panels, waterproof shower wall panels, shower niches, bathtub surrounds, steam rooms, wet rooms, spas, swimming pools, hot tub surrounds, kitchens, laundry rooms, and other moisture-sensitive residential or commercial areas.

Manufactured with German engineering and designed to meet high industry standards, ARDEX TLT 709 seam tape provides reliable performance for professional construction, bathroom renovation, home improvement, and DIY waterproofing projects. It bonds to properly prepared concrete, plywood, cement slabs, and autoclaved aerated concrete using the appropriate thin-set mortar, making it suitable for intricate, irregular, and uneven substrates. Once the waterproofing system is completed, it can be covered with ceramic tile, porcelain tile, granite tile, marble tile, mosaic tile, or natural stone tile using suitable thin-set mortar adhesive.

For installation, embed the ARDEX TLT 709 seam tape into the appropriate thin-set mortar and position it evenly over membrane seams, joints, transitions, and floor-to-wall connections. Smooth the tape firmly into the mortar to promote complete contact and secure adhesion before continuing with the waterproofing membrane system and tile installation. Its flexible, user-friendly construction simplifies installation, saves time and effort, and helps contractors, builders, remodelers, and experienced DIY installers achieve a clean, professional, tile-ready waterproofing system with dependable long-term protection.