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HydroBond 402-CCSM

  • Total Waterproofing Strength: HydroBond 402-CCSM is a high-performance membrane for external waterproofing of below-ground structures. Its LDPE and geotextile fleece composite ensures excellent crack-bridging, forming a high-strength bond for unbeatable peel adhesion.
  • Pre Applied: Laid above blinding or fixed to building line prior to the placement of the concrete. When used with other Newton HydroBond System products, it provides a coordinated approach to comprehensive structure waterproofing.
  • No Compromise, No Leaks: HydroBond 402-CCSM guarantees a watertight seal for foundations, basements, tanks, culverts, and tunnel bases. Exceptional crack-bridging and peel adhesion qualities ensure protection even in challenging conditions.

HydroBond 402-CCSM is a high performance membrane for the external waterproofing of below-ground foundation structures, basements, water holding tanks, culverts and tunnel bases.

A composite of LDPE and a non-woven geotextile fleece, the membrane has excellent crack-bridging capabilities at places where cracks occur within the concrete. When pre-applied before the concrete, the wet concrete is absorbed into the fleece, integrally bonding it to the membrane. This results in a high-strength bond with exceptional peel adhesion qualities, preventing water migration between the concrete and the membrane, even when damaged.

HydroBond 402-CCSM can be used with other Newton HydroBond System products to provide a coordinated and combined approach to the waterproofing of the whole structure that includes protection against water penetrating through construction joints, through and around service entries and to movement joints.

  • Key Benefits
  • Typical Applications
  • Suitable Substrate
  • Technical Data
  • Key Benefits

    Key Benefits

    • Full mechanical bond to the concrete prevents water migration between membrane and structure
    • Very flexible – Resistant to movement and fissures in substrates
    • Unique pre-installed dual component (chemical fusion bond) adhesive laps at membrane selvedge

    Typical Applications

    Typical Applications

    • As a continuous Type A, externally applied waterproofing membrane and radon barrier to earth-retained structures
    • Below slab DPM and Radon DPM without the need for smooth blinding and protection

    Suitable Substrate

    Suitable Substrate


    • Concrete blinding
    • Compacted type 1 hardcore
    • Compacted sand

    The following can be placed above the blinding or hardcore prior to the installation of 402-CCSM:


    • Existing structure
    • Secant or contiguous concrete piles
    • Metal sheet piles
    • Diaphragm walls
    • King post wall
    • Sufficiently stable ground such as clay or chalk
    • Temporary timber shuttering/formwork

    Technical Data

    Technical Data

    Installed Performance Results
    Service temperature -40ºC to +100ºC
    Adhesion to concrete – Pre-applied 0.55 N/mm²
    Adhesion to concrete – Post-applied 0.55 N/mm²
    Lateral watertightness – Pre-applied (28 day test) 500 kPa
    Lateral watertightness – Post-applied (7 & 28 day test) 120 kPa
    Elongation at break (Machine) 29.3%
    Elongation at break (Traverse) 53.3%
    Tensile strength (Machine) 684 N/50 mm
    Tensile strength (Traverse) 477 N/50 mm

    Watertightness – 60 kPa for 24h

    Watertightness – 400 kPa for 72h Watertight
    Resistance to static loading – 20 kg load Watertight
    Resistance to impact – AI plate – 200 mm drop Watertight
    Resistance to impact – EPS panel – 700 mm drop Watertight
    Joint seam strength – 80mm adhered overlap 423 N/50 mm
    Resistance to tearing – Nail shank – Machine direction 252 N
    Resistance to tearing – Nail shank – Across 306 N

    Durability against chemicals – 23°C for 12 weeks


    Durability against chemicals – 60 kPa for 28 days


    Durability against thermal ageing – 70ºC for 12 weeks


    Durability against thermal ageing – 60 kPa for 24 hours


    Compatibility with Bitumen – 70ºC / 28 days


    Compatibility with Bitumen – 60 kPa / 24 hours


    Water vapour diffusion resistance – Sd value

    365 m

    Water vapour diffusion resistance – μ value

    301653 μ

    Water vapour diffusion resistance

    1825 MNs/g

    Radon gas diffusion coefficient

    0.39 x 10-12 m2/s-1

    Resistance to fire Euroclass E

    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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