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HydroBond 109-LM

Radon-certified, flexible, single-component, cold-applied and seamless rubber waterproofing membrane used primarily for the external waterproofing of earth-retaining structures such as basements and foundation walls.

HydroBond 109-LM is extremely puncture resistant with elasticity of 850% and a 95% recovery memory. The membrane becomes fully engaged into the substrate to prevent water tracking and is suitable for all below ground and earth-retained structures, ranging from domestic basements to the largest civil engineering projects.

HydroBond 109-LM is available in two variants: Medium Viscosity, for use in warmer temperatures, and Low Viscosity, for when it is cooler. HydroBond 109-LM is also a constituent product of the Newton HydroBond® System supported by BDA Agrément Certificate BAB 16-031/04/A and is accepted by the NHBC as a suitable waterproofing system for Type A Waterproofing to Grades 1a, 1b, 2 & 3 – BS 8102:2022.

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

    Key Benefits

    • Fully-bonded seamless membrane.
    • Good elasticity with no shrinkage.
    • Medium/Low Viscosity variants instantly raintight when sprayed with HydroBond 109-LM Catalyst.
    • Primer not required for most substrates.
    • Complete vapour barrier.
    • Solvent free, non-toxic and odourless.
    • Non-flammable – No VOCs.
    • High radon gas resistance.

    Typical Applications

    Typical Applications

    • Waterproofing of retained structures, together with HydroBond 403 Plus.
    • Standalone waterproofing membrane for basement, foundation and earth-retained walls.
    • Used as a detailing membrane or where access is too tight to spray HydroBond 108-LM.
    • Loading-capable, liquid DPM connecting wall waterproofing membrane to internal skin DPC.

    Technical Data

    Technical Data

     Cured Performance  Result
    Colour Black
    Membrane thickness – RC walls  1.0mm
    Membrane thickness – RC joints 2.0mm
    Membrane thickness – Block and ICF walls  2.0mm
    Membrane thickness – Radon barrier & horizontal elements  2.0mm
    Density / Specific gravity (no reinforcement)  1.1
    Softening temperature  > 130ºC
    Adhesion to concrete  0.62N/mm²
    Tensile strength & elongation at break (reinforced) 0.68N/mm²
    Tensile strength & elongation at break (reinforced) (aged)  0.58N/mm²
    Loading capability (no reinforcement) – Class 1  0.06MN/mm2
    Resistance to static indentation (reinforced)  250N
    Crack bridging ability (no reinforcement) – Class CB2  ≥2mm
    Resistance to fatigue movement – 1000 actions @ -10ºC  Pass
    Dimensional stability at high temperature – no dripping  ≥70ºC
    Low temperature flexibility @ -10ºC  Pass
    Flexibility at low temperature @ 0ºC Pass
    Water vapour diffusion resistance – Sd value  72.4m
    Water tightness  7 bar
    Water resistance – 21 days at 21ºC  Watertight
    Impact resistance after UV-ageing – 1000h – 10 mm  Pass
    Radon gas diffusion resistance (1 mm membrane)  2.1 x 10-11m²/s
    Reaction to fire classification  Euroclass B2

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