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CDM 508 Mesh Membrane

BBALogoCertNo-22_6357

  • Durable and Certified: Backed by a 30-year guarantee and BBA Agrément Certificate 22/6357, CDM 508 Mesh ensures long-lasting waterproofing performance.
  • Enhanced Finishing: The thermally welded polyethylene mesh provides a strong key for plasters and renders, ensuring a secure and durable finish on waterproofed surfaces.
  • High Chemical and Biological Resistance: Inert and non-polluting, CDM 508 Mesh resists water, alkalines, saline solutions, organic acids, minerals, hydrocarbons, bacteria, fungi, and small organisms.
  • Comprehensive Waterproofing: Suitable for earth-retained walls and vaulted soffits, it integrates seamlessly with the Newton CDM System, providing effective and reliable waterproofing solutions for basement walls.

Newton CDM 508 Mesh is a high quality, 8mm meshed cavity drain waterproofing membrane for use within the Newton CDM System, our internally applied waterproofing system that also includes drainage and pumping systems. The strong polyethylene mesh is thermally welded to the face of the membrane during manufacturing to provide a key for plasters and renders.

CDM 508 Mesh is suitable for the waterproofing of earth retained walls and vaulted soffits and is guaranteed against deterioration for 30 years, with a life expectancy of the design life of the building (DIN 9001:2000), and supported by BBA Agrément Certificate 22/6357.

CDM 508 Mesh is inert and non-polluting to drinking water, highly resistant to water, alkalines, saline solutions and organic acids, and not affected by minerals and hydrocarbons. It is also rot-proof, and resistant to bacteria, fungi and small organisms.

  • Key Benefits
  • Typical Applications
  • British Standard 8102:2022
  • Technical Data
  • Available across the UK
  • Key Benefits

    Key Benefits

    • Does not require extensive and damaging preparation to the wall surface
    • Speed of installation
    • Capable of delivering an environment to all levels within a Grade 3 environment to BS 8102:2022
    • Meshed surface for application of plasters/renders

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    Typical Applications

    Typical Applications

    As part of the Newton CDM System for below ground waterproofing applications:

    • Walls
    • Vaults
    • Tunnels

    SUITABLE SUBSTRATE – WALLS

    • Concrete
    • Brick
    • Concrete block
    • ICF – With special longer fixing plugs

    SUITABLE SUBSTRATE – SOFFITS

    • Concrete – To fall
    • Brick – Arched or vaulted

    British Standard 8102:2022

    British Standard 8102:2022

    The British Standard 8102:2022 Code of Practice for Protection of Below Ground Structures Against Water Ingress is the main design guide for structural waterproofing in the UK.

    The Newton CDM System is a maintainable system, so complies with BS 8102 requirements. The standard also specifies that: “a waterproofing specialist should be included as part of the design team so that an integrated waterproofing is created”

    Therefore it is our recommendation that the Newton CDM System is installed by a Newton Specialist Contractor (NSBC).

    Technical Data

    Technical Data

    Features Result
    Material HDPE
    Colour White
    Density 505g/m²
    Width 2.0m
    Length 20m
    Area 40m²
    Membrane thickness 0.6mm
    Stud Height 7.0mm
    Working temperature -50ºC to +80ºC
    Softening temperature 126ºC
    Packaged weight 20.2kg
    Installed Performance Result
    Water tightness at 60 kPa; 24h Pass
    Tensile strength MD 416N
    Tensile strength CD 488N
    Resistance to static loading >20kg
    Compressive strength 180kN
    Fire resistance F*
    Type of application Type V
    Life expectancy Lifetime of Structure

    The above data, even if carried out according to regulated tests are indicative and they may change when specific site conditions vary.
    * Newton Waterproofing Systems can provide fire-resistant membranes that are tested and classified to a fire rating of B-s2.d0. Get in touch directly for more information.

    Available across the UK

    Available across the UK

    Cavity Drain Waterproofing Solutions Across the UK

    We provide cavity drain waterproofing products and solutions across the whole of the UK:

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    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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      We will be closing between Christmas and New Year, with the last day of operations being Friday 20th December. Last orders for delivery before Christmas therefore need to be placed by 2pm on Thursday 19th December, with final deliveries on Friday 20th December. After this, no deliveries will be possible until January 2025. The Newton branches in Tonbridge and Leeds will reopen in the New Year on Thursday 2nd January 2025.