ARBOFLEX Liquid Waterproofing Grey - 20kg

Sale price£214.80


UK Delivery in 2-3 working days. Delivery £15+VAT (Excludes Northern Ireland).

Discover Arboflex PU - Your Ultimate Waterproof Solution

Arboflex PU is the ultimate answer to your waterproofing needs, providing a swift and cost-effective solution.

Crafted from pure liquid polyurethane, this innovative product instantly transforms into a waterproof barrier upon application.

Once cured, it creates a resilient, seamless, and waterproof membrane that boasts an impressive 25-year lifespan.

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Why Choose Arboflex:

  • BBA Certified for a 25-Year Lifespan
  • Adaptable to Uneven, Curved, and Irregular Surfaces
  • Installs Directly Over Various Substrates (e.g., Felt, Asbestos, and Cement)
  • Swift and Effortless Installation
  • A Budget-Friendly Alternative to Roof Replacement
  • Ready to Use Right Out of the Tin
  • Simple to Clean
  • Maintenance-Free
  • Creates a Seamless, Elastic, and Waterproof Membrane

Elevate your waterproofing game with Arboflex PU - your go-to solution for durability, convenience, and savings.

Save Time and Money with Arboflex

Bid farewell to the days of costly and time-consuming roof replacements. Arboflex effortlessly adheres to a variety of substrates, including felt, metal, cement, and even asbestos. Its versatility extends beyond roofs, making it suitable for balconies, swimming pools, artificial lakes, and flooring. Say goodbye to ongoing roofing maintenance, as Arboflex is entirely maintenance-free, ensuring you save both time and money.


  1. What are the recommended applications for this product?

    • It is suitable for flat and low-pitched roofs, walkable floors with waterproofing and anti-slip finish, structural concrete slabs, metal and asbestos roofs, swimming pools, artificial lakes, ponds, and green roof applications.

  2. How is the product applied?

    • It can be applied using a brush or roller in thin layers to achieve the recommended thickness.

  3. What is the coverage rate of this product?

    • Approximately 1.5 - 1.8 kg/m², with a 20KG tin covering 10-13 m² depending on surface conditions and application skill.

  4. What are the key features of the product?

    • It offers high elasticity, wear resistance, stability, durability, waterproofing, and is green roof certified.

  5. Is the product compatible with various surfaces?

    • Yes, it bonds to a range of surfaces including cement, concrete, polyurethane foam, butyl, bituminous sheets, wood, and metal.

  6. What are the storage and shelf life recommendations?

    • Store in a dry place at temperatures between 5°C and 35°C, and use within 12 months of manufacturing.

  7. How should the surface be prepared before application?

    • Surfaces should be clean, dry, and free from debris. Existing waterproofing paints and chippings should be removed, and cracks and fissures filled.

  8. Are there any specific environmental conditions required for application?

    • The product should be applied in dry conditions, avoiding humidity or moisture in the substrate.

  9. What safety precautions should be taken during handling and application?

    • Use protective equipment like gloves, goggles, and respiratory protection, especially when spraying.

  10. Can this product be used in combination with other materials?

    • Yes, it can be used with silica sand for mechanical anchorage and is compatible with specific primers for improved bonding.

For more detailed information, please refer to the Arboflex Datasheet.

Types And Applications of Liquid Waterproofing Membranes

Liquid waterproofing membranes are essential in constructing and maintaining buildings that are resilient to water damage.

They provide a crucial barrier against moisture intrusion, thus ensuring the longevity and integrity of structures.

The flexibility of these membranes is particularly vital, as it allows them to adapt to the natural movements and shifts of buildings, which can occur due to temperature changes, settling, or other environmental factors.

Role of liquid waterproofing membranes:

  • Preventing Water Damage: They act as a barrier, keeping structures dry and protected.
  • Extending Building Life: By preventing water ingress, these membranes extend the service life of structures.
  • Adapting to Structural Movements: Their flexibility allows them to move with the building, accommodating shifts without losing effectiveness.

🔆 Key Takeaway: Liquid waterproofing membranes are more than just a layer of protection; they are integral to the longevity and durability of buildings. Their ability to adapt to structural movements while maintaining their protective qualities makes them an indispensable component in modern construction.

Types of Liquid Waterproofing Membranes

The market offers a variety of liquid waterproofing membranes, each designed to meet specific needs and environmental conditions:

Water/Acrylic-Based Membranes:

Water/acrylic-based membranes are a popular choice in the construction industry due to their versatility and ease of application. They are especially favored in scenarios where exposure to sunlight and UV radiation is a significant concern.

  • Composition and Characteristics:
    • Made from acrylic polymers and additives.
    • Highly resistant to water and environmental factors like UV radiation.
  • Common Uses and Advantages:
    • Ideal for roofing, balconies, decks, and wet areas.
    • Quick drying and strong adhesion to various substrates.
  • Limitations:
    • May struggle with bridging larger cracks.
    • Less suitable for areas with heavy traffic or prolonged water ponding.

🔆 Key Takeaway: Water/acrylic-based membranes stand out for their ease of application and UV resistance, making them a go-to choice for many outdoor and wet area applications. However, their limitations in bridging large gaps and lower tolerance to heavy traffic must be considered in the planning phase.

Polyurethane (PU) Membranes:

Polyurethane membranes are renowned for their elasticity and ability to withstand both positive and negative hydrostatic pressure. They are a preferred option for roofing and foundation waterproofing.

  • Features and Suitability:
    • High elasticity, conforming to complex geometries.
    • Effective for both interior and exterior applications.
  • Advantages:
    • Seamless barrier with superior waterproofing.
    • Durable and resistant to UV and chemicals.
  • Challenges and Costs:
    • More expensive than other types.
    • Require skilled application for optimal performance.

🔆 Key Takeaway: Polyurethane membranes are a robust waterproofing solution, offering superior performance in a range of applications. Their high elasticity and durability make them an excellent choice for challenging projects, albeit with a higher cost and need for skilled application.

Bituminous Membranes:

Bituminous membranes combine bitumen with materials like polyester or fiberglass, offering a resilient

waterproofing solution. Their application is widespread, from roofing to foundational waterproofing, showcasing their versatility.

  • Composition and Application Methods:
    • A mixture of bitumen and reinforcing materials.
    • Applied hot or cold, suitable for various surfaces.
  • Advantages:
    • Exceptional waterproofing with self-healing properties.
    • High thermal resistance and versatility.
  • Installation Complexities:
    • Requires specialist knowledge for proper installation.
    • Sensitive to temperature during application.

🔆 Key Takeaway: Bituminous membranes provide excellent waterproofing capabilities and thermal resistance, making them ideal for a wide range of applications. However, their complex installation process requires specialized skills and attention to temperature conditions.

Application and Selection Criteria

Selecting the right type of liquid waterproofing membrane is crucial for the success of any waterproofing project.

Factors such as the intended use (internal or external), the size of the area, exposure to environmental conditions, and the nature of the substrate all play a role in this decision.

Considering the following factors for selecting the right membrane:

  • Internal vs. External Use: Different membranes suit different environments.
  • Area Size and Exposure: Larger areas or those exposed to harsh conditions may require more durable membranes.
  • Substrate Nature: The type of surface (soil, wood, concrete) influences membrane choice.

Importance of Proper Application:

  • Preparation Work: Poor preparation can lead to membrane failure.
  • Choosing the Right Product: Using an unsuitable membrane for a specific task can cause issues like seam separation.

🔆 Key Takeaway: The effectiveness of a liquid waterproofing membrane heavily relies on selecting the right type for the specific conditions and ensuring proper application. Attention to detail in both selection and installation is crucial for long-term success.

Special Focus: Waterproofing for Wetrooms, Bathrooms, and Showers

Wetrooms, bathrooms, and showers pose unique challenges for waterproofing due to their constant exposure to moisture and humidity.

In such environments, water/acrylic liquid waterproofing membranes are often the best choice for their ability to create a durable barrier against moisture.

Why water/acrylic membranes are ideal for wet areas:

  • High Moisture Exposure: These membranes excel in environments with high levels of humidity.
  • Protection Against Water Damage: They prevent leaks, spills, and moisture ingress.

Risks of Water Ingress in Wet Areas:

  • Flooring Damage: Moisture can lead to swelling, joint widening, and deterioration of materials.
  • Overall Structure Impact: Even small amounts of moisture can significantly impact the structure's integrity.

Application Tips:

  • Choosing the Right Product: Select membranes specifically designed for wet areas.
  • Following Manufacturer's Instructions: Ensures proper application and effectiveness.

🔆 Key Takeaway: In wet areas like bathrooms and showers, choosing a suitable water/acrylic waterproofing membrane and applying it correctly are key to safeguarding against water damage. This ensures the longevity and functionality of the space.

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