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HydroCoat 107 Elastic 2K

BDA Agrément® BAB-18-026-P-A-UK

  • Cementing Waterproof Strength: HydroCoat 107 Elastic 2K, a cementitious flexible waterproofing membrane coating, ensures robust waterproofing and protection for concrete and masonry. Its spray application makes it ideal for large-scale projects, including reservoirs, tunnels, water tanks, basements, podium decks, flat roofs, and balconies.
  • Spray-Applied Precision: Tailored for efficiency, HydroCoat 107 Elastic 2K supports spray application to streamline waterproofing across extensive projects. From reservoirs to balconies, it provides a durable shield against moisture.
  • Versatile Waterproofing Power: Suited for a range of structures, including basements, podium decks, and flat roofs, HydroCoat 107 Elastic 2K stands out as a versatile solution. Its cementitious formula ensures effective, long-lasting waterproofing.

Cementitious coating for the waterproofing and protection of concrete and masonry. Installers can spray-apply the system, making it ideal for large-scale projects. Suited to the waterproofing of reservoirs, tunnels, water tanks, basements, podium decks, flat roofs and balconies.

Proven Cementitious Flexible Waterproofing Membrane Performance

HydroCoat 107 Elastic 2K is a high-performance Cementitious Flexible Waterproofing Membrane for structures exposed to moisture and hydrostatic pressure. Its polymer-modified cementitious formulation creates a dense, low-permeability barrier that protects concrete and masonry from water ingress. At the same time, the membrane remains vapour permeable to help manage internal moisture. This balance reduces long-term deterioration caused by carbonation and aggressive environmental conditions.

Flexibility, Adhesion and Crack Accommodation

Unlike rigid cementitious coatings, HydroCoat 107 Elastic 2K retains elastomeric properties even when fully immersed. This flexibility allows the membrane to accommodate minor structural movement and hairline cracking. As a result, waterproofing integrity remains intact over time. Excellent adhesion to prepared concrete, masonry, and steel creates a fully bonded system. This bond helps resist lateral water tracking in both positive and negative waterproofing applications.

Cementitious Flexible Waterproofing Membrane – Premium Design

We supply HydroCoat 107 Elastic 2K as pre-packaged components for easy on-site mixing. This approach helps reduce installation errors and maintain consistent performance. The water-based Cementitious Flexible Waterproofing Membrane can be applied to damp substrates. Installers can also install the system at temperatures as low as 5°C. This extends the workable installation window on live construction sites. Once cured, the membrane is non-toxic and suitable for water-retaining structures. It supports safe, compliant waterproofing across commercial, residential, and infrastructure projects.


  • Key Benefits
  • Typical Applications
  • Technical Data
  • FAQ
  • Key Benefits

    Key Benefits

    • BDA Agrément for proven performance.
    • Pre-packaged materials easily mixed on site.
    • Tough, flexible coating which maintains its elastomeric properties even under immersed conditions to accommodate movement in cracks.
    • Excellent adhesion to sound prepared concrete and masonry substrates, as well as steel.
    • Dense matrix offers low permeability to water and carbon dioxide gas.
    • A 2mm coat provides the equivalent to 135mm of good-quality concrete cover.
    • Can be applied to damp substrates in temperatures down to 5°C.
    • Water-based product. Non-toxic when cured.

    Typical Applications

    Typical Applications

    Waterproofing of:

    • Podium decks, flat roofs, terraces and balconies.
    • Water-retaining structures such as water tanks and reservoirs.
    • Earth-retaining foundation walls to both the positive and negative side.
    • Internal concrete surfaces of walls and rafts or slabs to earth-retained structures such as habitable basements, car parks, plant rooms and lift-pits.

    Technical Data

    Technical Data

     Cured Performance  Result
    Colour Grey
    Membrane thickness in one or two coats  2.0mm
    Adhesion to concrete ≥ 0.8 MPa
    Tensile strength – Ambient*  0.5 MPa
    Tensile strength – Immersed*  0.4 MPa
    Elongation – Ambient*  120 – 130%
    Elongation – Immersed*  70 – 80 MPa
    Loading capability – 28 days  8 to 10 MPa
    Hardness  84.0 Shore A
    Water Permeability Coefficient  5.37 x 10-16 m/sec
    Water vapour diffusion resistance – Sd value  1.55m
    Water vapour diffusion resistance – µ value  775µ
    Water vapour diffusion resistance  7.75 MNs/g
    Water resistance – Positive side  10.0 Bar
    Water resistance – Negative side  1.50 Bar
    Reaction to fire classification – Euroclass  B – s1, d0
    UV Resistance – Stable but will discolour  50 Years
    pH  12

    *2mm film cured for 28 days.

    FAQ

    FAQ

    What is HydroCoat 107 Elastic 2K?

    HydroCoat 107 Elastic 2K is a flexible, cementitious waterproofing membrane designed to protect concrete and masonry while accommodating movement and cracking.

    Where is HydroCoat 107 Elastic 2K typically used?

    The membrane is used on basements, reservoirs, tunnels, water tanks, podium decks, flat roofs, and balconies requiring flexible waterproof protection.

    How does HydroCoat 107 Elastic 2K differ from rigid cementitious coatings?

    Unlike rigid coatings, HydroCoat 107 Elastic 2K retains elastomeric properties, allowing it to bridge hairline cracks and tolerate minor structural movement.

    Can HydroCoat 107 Elastic 2K be spray-applied?

    Yes. Installers can spray-apply HydroCoat 107 Elastic 2K, making it well suited to large-scale and complex waterproofing projects.

    Is HydroCoat 107 Elastic 2K suitable for damp substrates?

    Yes. The system can be applied to damp concrete and masonry substrates when surfaces are correctly prepared.

    Does HydroCoat 107 Elastic 2K resist water pressure?

    Yes. The membrane provides effective protection against positive and negative water pressure when applied in accordance with specification.

    Is HydroCoat 107 Elastic 2K vapour permeable?

    Yes. The membrane remains vapour permeable, helping manage internal moisture while preventing water ingress.

    Is HydroCoat 107 Elastic 2K suitable for water-retaining structures?

    Yes. Once cured, the membrane is non-toxic and suitable for use in water-retaining structures such as tanks and reservoirs.

    Does HydroCoat 107 Elastic 2K form part of a Type A waterproofing system?

    Yes. HydroCoat 107 Elastic 2K can be used as part of a Type A waterproofing strategy in accordance with BS 8102:2022.

    Speak to our friendly, expert team

    Our staff are able to provide guidance for projects of all sizes, whether you require some general advice about damp or waterproofing, or support with technical drawings and specifications.


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