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ARDEX FLEXBONE UI 740 Uncoupling Waterproofing Polyethylene Membrane 215 Sq Ft Roll, 1/8" Thick, Load Bearing Underlayment for Large Format Tiles in Heavy Stress Areas -1 Roll
Item #: 39649997

ARDEX FLEXBONE UI 740 Uncoupling Waterproofing Polyethylene Membrane 215 Sq Ft Roll, 1/8" Thick, Load Bearing Underlayment for Large Format Tiles in

Item #: 39649997

€ 351

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What Stands Out

Load Bearing Design
The ARDEX FLEXBONE UI 740 features a robust load-bearing design, effectively managing stress in high-traffic areas, ensuring your large format tiles remain intact and visually appealing.
Waterproof Protection
This membrane provides exceptional waterproofing capabilities, safeguarding substrates from moisture damage, making it ideal for bathrooms and kitchens where water exposure is a concern.
User Friendly Installation
With its lightweight 1/8” thick build and easy-to-handle roll, installation is streamlined, saving time and labor costs for contractors, while enhancing overall project efficiency.

Product Details

ARDEX FLEXBONE UI 740 - Ideal for large format tiles with outstanding tensile bond strength. Neutralizes substrate movement & supports heavy loads. Use in bathrooms & high-stress areas. Shop at Ubuy Ireland

Who Should Buy?

Suitable For
  • Professional Tilers

    Ideal for professional tilers needing a durable underlayment for installing large format tiles in high-stress areas.

  • Basement Renovations

    Great for basement projects where moisture is a concern, providing waterproofing and uncoupling benefits.

  • Heavy Traffic Areas

    Perfect for areas with heavy foot traffic, ensuring long-lasting support and stability under large tiles.

Not Suitable For
  • Small DIY Projects

    Not suited for small-scale DIY projects where simpler solutions are more cost-effective and easier to manage.

Product Description

ARDEX FLEXBONE UI 740 Uncoupling Waterproofing Polyethylene Membrane 215 Sq Ft Roll, 1/8" Thick, Load Bearing Underlayment for Large Format Tiles in Heavy Stress Areas -1 Roll

About This Item

Introducing the ARDEX FLEXBONE Uncoupling Waterproofing Polyethylene Membrane, the ultimate solution for a flawless tile installation. This high-quality membrane is a must-have for any serious DIY enthusiast or professional contractor. With its innovative design, the ARDEX FLEXBONE Uncoupling Waterproofing Polyethylene Membrane is specifically engineered to prevent cracks and damage to your tile installation. Its uncoupling properties allow for movement between the substrate and the tile, ensuring a long-lasting and durable finish. The waterproofing capabilities of this membrane are second to none.

It provides a reliable barrier against moisture, preventing any potential damage caused by water infiltration. Say goodbye to the worry of leaks or mold growth, as this membrane will keep your floors and walls protected in even the most humid environments. Installation is a breeze with the ARDEX FLEXBONE Uncoupling Waterproofing Polyethylene Membrane. It can be easily cut to size, making it adaptable to any project.

The self-adhesive backing ensures a secure and hassle-free application, saving you time and effort. This roll of ARDEX FLEXBONE Uncoupling Waterproofing Polyethylene Membrane covers a generous 215 square feet, making it suitable for large-scale installations. Whether you're working on a bathroom renovation or a commercial project, this roll has got you covered. Invest in the ARDEX FLEXBONE Uncoupling Waterproofing Polyethylene Membrane and enjoy the peace of mind that comes with a flawless and long-lasting tile installation. Don't compromise on quality; choose a product that professionals trust.

Order yours today and take your tiling projects to the next level.

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is ARDEX FLEXBONE UI 740 used for?

    Answer: ARDEX FLEXBONE UI 740 is specifically designed for creating a reliable uncoupling and waterproofing layer between the substrate and large format tiles. This moisture-resistant polyethylene membrane helps prevent cracking and allows for effective movement between the tile and the substrate. It is particularly useful in areas prone to moisture, such as bathrooms and kitchens.
  • Question: How does the uncoupling feature work in ARDEX FLEXBONE UI 740?

    Answer: The uncoupling feature of ARDEX FLEXBONE UI 740 allows for movement within the flooring assembly, effectively reducing stress on the tile and minimizing the risk of cracks. This is achieved through its unique design, which decouples the tile from the substrate, adapting to any movement that occurs underneath without compromising the surface layer. This makes it ideal in settings with temperature fluctuations or structural shifts.
  • Question: Is ARDEX FLEXBONE UI 740 suitable for heated floors?

    Answer: Yes, ARDEX FLEXBONE UI 740 is compatible with heated flooring systems. Its design supports the even distribution of heat while maintaining the integrity of the flooring above. This feature is highly beneficial in creating a warm, comfortable environment, especially in spaces like bathrooms or entryways, where heated floors provide additional comfort.
  • Question: How thick is the ARDEX FLEXBONE UI 740 membrane?

    Answer: The ARDEX FLEXBONE UI 740 membrane boasts a thickness of 1/8 inch (approximately 3 mm). This thickness provides robust support while remaining lightweight, making it suitable for both residential and commercial applications. Its load-bearing capabilities ensure that heavy tiles can be installed without concerns about cracking or damage.
  • Question: Can I use ARDEX FLEXBONE UI 740 with all types of tiles?

    Answer: ARDEX FLEXBONE UI 740 is designed to be compatible with various large format tiles, including porcelain, ceramic, and natural stone. Its versatility allows for a wide range of decorative options while ensuring reliable performance. Whether you're renovating a living space or designing a commercial area, this membrane adapts well to different tile choices.
  • Question: What is the coverage area of ARDEX FLEXBONE UI 740?

    Answer: Each roll of ARDEX FLEXBONE UI 740 covers an area of 215 square feet. This expansive coverage makes it cost-effective and efficient for larger projects, such as floor renovations or new constructions. Using this membrane can streamline the process of tile installation, allowing for quicker application without compromising quality.
  • Question: How do you install ARDEX FLEXBONE UI 740?

    Answer: To install ARDEX FLEXBONE UI 740, ensure a clean and dry substrate before rolling out the membrane. It is typically installed using a thin-set mortar that adheres to the underside, allowing for proper bond strength. Follow the manufacturer's guidelines to achieve optimal performance. This method provides a seamless surface that enhances both durability and aesthetics in your flooring project.
  • Question: Is ARDEX FLEXBONE UI 740 suitable for outdoor use?

    Answer: Yes, ARDEX FLEXBONE UI 740 can be used for outdoor applications, particularly in covered areas. Its waterproofing capabilities protect the underlying structures from moisture damage. This feature is beneficial for patios, balconies, and similar spaces where moisture exposure is a concern, while still providing an attractive tile finish.
  • Question: Where can I buy ARDEX FLEXBONE UI 740 in Ireland?

    Answer: You can purchase ARDEX FLEXBONE UI 740 from Ubuy in Ireland. Ubuy provides a reliable platform for accessing a variety of home improvement products, including this specialized membrane. Their user-friendly interface simplifies the purchasing process, ensuring you get the right product shipped directly to your location.
  • Question: What are the benefits of using ARDEX FLEXBONE UI 740?

    Answer: ARDEX FLEXBONE UI 740 offers multiple benefits, including exceptional uncoupling performance, moisture resistance, and compatibility with large format tiles. This membrane enhances the longevity of your flooring by preventing cracks and ensuring a firm bond. It's an excellent choice for high-traffic areas or spaces prone to moisture, elevating both functionality and design in your home.

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Pros

  • Excellent waterproofing capabilities
  • Durable load-bearing support
  • Easy to install
  • Compatible with various tile types
  • Reduces substrate movement

Cons

  • Might require additional tools for installation.

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Mohammad
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“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”

23 July 2026 · via Trustpilot
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