---
product_id: 304299504
title: "ARDEX FLEXBONE UI 740 Uncoupling and Waterproofing Polypropylene Membrane 3mm Thick Underlayment - 20 Square Metres Roll"
brand: "ardex"
price: "€ 641.37"
currency: EUR
in_stock: false
url: https://www.desertcart.gr/products/304299504-ardex-flexbone-ui-740-uncoupling-and-waterproofing-polypropylene-membrane-3mm
store_origin: GR
region: Greece
---

# Waterproofing 1m x 20m Roll 3mm Thick Protection ARDEX FLEXBONE UI 740 Uncoupling and Waterproofing Polypropylene Membrane 3mm Thick Underlayment - 20 Square Metres Roll

**Brand:** ardex
**Price:** € 641.37
**Availability:** ❌ Out of Stock

## Summary

> Transform Your Floors with Confidence! 🏆

## Quick Answers

- **What is this?** ARDEX FLEXBONE UI 740 Uncoupling and Waterproofing Polypropylene Membrane 3mm Thick Underlayment - 20 Square Metres Roll by ardex
- **How much does it cost?** € 641.37 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/304299504-ardex-flexbone-ui-740-uncoupling-and-waterproofing-polypropylene-membrane-3mm)

## Best For

- ardex enthusiasts

## Why This Product

- Trusted ardex brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Easy Installation:** Designed for hassle-free application, saving you time and effort.
- • **Generous Coverage:** Covers 20 square metres, perfect for both small and large projects.
- • **Advanced Protection:** Uncoupling and waterproofing features prevent grout joint and tile damage.
- • **Unmatched Durability:** Engineered with 3mm thick polypropylene for long-lasting performance.
- • **Vapor Management Mastery:** Effectively manages vapor to maintain the integrity of your flooring.

## Overview

The ARDEX FLEXBONE UI 740 is a high-performance uncoupling and waterproofing membrane, measuring 1m x 20m and 3mm thick, designed to protect your flooring from substrate movement, moisture, and cracks. Manufactured by ARDEX, this polypropylene underlayment is perfect for both residential and commercial applications, ensuring durability and peace of mind.

## Description

ARDEX UI 740 FLEXBONE Uncoupling Membrane is a high load-bearing uncoupling membrane ideal for large format tile in high traffic areas. The unique bone-shaped pattern with GripLock Technology delivers outstanding tensile bond strength. The system helps neutralize underlying substrate movement and supports and distributes heavy loads from above. Special high-performance felt helps provide vapor equalization. ARDEX UI 740 FLEXBONE can be used as a waterproof layer in bathrooms and wet areas. High load-bearing uncoupling membrane. Higher shear and tensile bond strengths than comparable uncoupling membranes (independent tests at MPA Wiesbaden, Germany). Suitable as a waterproofing membrane. For use in high stress areas, such as shopping malls, airports, office buildings, hospitals, etc.

## Features

- Dimensions: 1m x 20m Roll
- Thickness: 3mm
- Uncoupling, Waterproofing, Crack Prevention and Vapor Management. Helps to prevent grout joint and tile damage from substrate movement
- Material: Polypropylene
- Manufactured by ARDEX

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | ARDEX |
| Part Number | UI 740 |
| Product Dimensions | 101.6 x 35.56 x 35.56 cm |
| Item model number | UI 740 |
| Item Package Quantity | 1 |

## Images

![ARDEX FLEXBONE UI 740 Uncoupling and Waterproofing Polypropylene Membrane 3mm Thick Underlayment - 20 Square Metres Roll - Image 1](https://m.media-amazon.com/images/I/51Jw91DCjKL.jpg)
![ARDEX FLEXBONE UI 740 Uncoupling and Waterproofing Polypropylene Membrane 3mm Thick Underlayment - 20 Square Metres Roll - Image 2](https://m.media-amazon.com/images/I/610vfIReSbL.jpg)
![ARDEX FLEXBONE UI 740 Uncoupling and Waterproofing Polypropylene Membrane 3mm Thick Underlayment - 20 Square Metres Roll - Image 3](https://m.media-amazon.com/images/I/81AL3Y2t7lL.jpg)
![ARDEX FLEXBONE UI 740 Uncoupling and Waterproofing Polypropylene Membrane 3mm Thick Underlayment - 20 Square Metres Roll - Image 4](https://m.media-amazon.com/images/I/81J-IJyo5FL.jpg)
![ARDEX FLEXBONE UI 740 Uncoupling and Waterproofing Polypropylene Membrane 3mm Thick Underlayment - 20 Square Metres Roll - Image 5](https://m.media-amazon.com/images/I/81cuXCGsUlL.jpg)

## Frequently Bought Together

- 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
- Schluter Kerdi-Drain PVC Shower Flange Kit with Preformed Waterproofing Corners - Ideal for New and Renovation Projects - 2-Inch Outlet, Easy Installation - KD2FLKPVC
- Schluter Kerdi Band Waterproofing Strip - Ideal for Sealing Butt Joints and Floor/Wall Connections - 33' Length, 5" Width, 4 mil Thickness - KEBA100/125/10M

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**Shop now:** [https://www.desertcart.gr/products/304299504-ardex-flexbone-ui-740-uncoupling-and-waterproofing-polypropylene-membrane-3mm](https://www.desertcart.gr/products/304299504-ardex-flexbone-ui-740-uncoupling-and-waterproofing-polypropylene-membrane-3mm)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-03-05*