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Save 10% on all Tile Cutters this month- Code June-24

Ardex UI 740 Flexbone Uncoupling Membrane

SKU 24252
by Ardex
Original price $336.34 - Original price $336.34
Original price
$336.34 - $336.34
Current price $336.34

ARDEX UI 740 FLEXBONE: Advanced Uncoupling Membrane for Tile Installations

Explore ARDEX UI 740 FLEXBONE, a high-strength uncoupling membrane with added ventilation channels. Ideal for large tiles in high-traffic areas, it offers superior substrate protection and versatility.


  • New Ventilation Channels: Enhanced feature for superior membrane performance.
  • Single Pass Prefill: Facilitates quick and efficient installation.
  • High Load-Bearing Capacity: Ideal for supporting large format tiles in high-traffic areas.
  • Substrate Movement Neutralization: Protects against damage to tiles and grout joints.
  • Outstanding Shear and Tensile Strength: Independently tested for superior durability.
  • Waterproofing Capability: Suitable for use in wet areas like bathrooms.
  • Versatile Application: Compatible with a range of tile materials, including porcelain and natural stone.
  • Ideal for High Stress Areas: Designed for use in commercial and institutional environments.
  • Compatibility: Can be seamlessly integrated with ARDEX Liquid BackerBoard®.

Size and Coverage Available

1/8″ (3 mm) Uncoupling Mat – 39″ wide x 65.6′ long (1 m wide x 20 m long) roll
Coverage of 215 sq. ft. (20 sq. m) per roll

1/8” (3 mm) Uncoupling Mat – 39” wide x 16.4’ long (1 m wide x 5 m long) roll
Coverage of 54 sq. ft. (5 sq. m) per roll

Warranty: ARDEX L.P. Standard Limited Warranty applies.

More Details

The ARDEX UI 740 FLEXBONE Uncoupling Membrane represents a major leap forward in tile installation technology. Specially designed to meet the challenges of high-traffic environments, this innovative membrane now includes added ventilation channels for enhanced performance. It is particularly well-suited for use with large format tile and stone installations, providing stability and durability where it matters most. The unique bone-shaped pattern with GripLock Technology ensures a strong bond, while its compatibility with various tile types makes it a versatile solution for a wide range of applications. From commercial spaces to high-end residential areas, the ARDEX UI 740 FLEXBONE is the ideal choice for professionals seeking reliability and excellence in their tiling projects.


ARDEX Americas is a leading provider of innovative building systems. We develop, manufacture, and distribute high-performance specialty building products, including flooring solutions, concrete repair, self-leveling underlayment, moisture control systems, tile adhesives, grouting systems, screeds, surface preparation, waterproofing solutions, and decorative concrete. As a family-owned company, ARDEX prioritizes local customer interaction, ensuring jobs are done right the first time to specification and on schedule while minimizing risk and costly callbacks. Our commitment to excellence is backed by industry-unique warranty systems covering products and labor costs.

Questions & Answers

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  • Which tile materials are compatible with the Ardex UI 720 Flexbone membrane?

    The Flexbone Floating Uncoupling Membrane is designed to work with porcelain, ceramic, quarry, and natural stone tiles.