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Newton CDM 503 3mm Mesh Membrane

Save £31.33 inc.VAT

Color: Clear
Size: 2m x 20m
Sale price£267.99 inc.VAT Regular price£299.32 inc.VAT


Newton CDM 503 Mesh is a high quality, BBA certified, 3mm 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 503 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 503 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

  • 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
  • 3mm deep for applications where space is tight
  • Meshed surface for application of plasters/renders

Typical Applications

Walls, vaults, and tunnels as part of the Newton CDM System for below ground waterproofing applications. 

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

Features Result
Material HDPE
Colour White
Density 505 g/m2
Width 2.0 m
Length 20 m
Area 40 m2
Membrane thickness 0.6 mm
Stud height 3.0 mm
Working temperature -50 to 80ºC
Softening temperature 126ºC
Packaged weight 20.2 kg


Installed Performance Result

Water tightness at 60 kPa; 24h


Tensile strength MD

416 N

Tensile strength CD

488 N

Resistance to static loading

> 20 kg

Compressive strength

250 kN

Fire resistance


Type of application

Type V

Life expectancy

Lifetime of structure


The 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.

Product Data

Code: M11

Packaging: Roll 2.0m x 20.0m

Colour: White/Translucent

Area: 40m²


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