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Newton CDM 508 8mm Studded Membrane (40m2)

Save £131.75 inc.VAT

Style: CDM 508 (Code M1-5-40): 2m x 20m – 40m²
Size: 2 x 20m
Color: White
Sale price£124.45 inc.VAT Regular price£256.20 inc.VAT


BBA certified, 8mm Cavity Drain Membrane for Basements – Newton CDM 508 Membrane is the most commonly used membrane within the Newton CDM System.

Newton CDM 508 Membrane is guaranteed against deterioration for 30 years, with a life expectancy of at least 50 years (DIN 9001:2000) and is supported by BBA Certification Number 94/3010.

Key Benefits

Does not require extensive and damaging preparation to the wall surface.
Speed of installation.
Provides vapour control and when used with humidity control systems is capable of delivering an environment to all levels within a Grade 3 environment to BS8102:2022.
Independently certified as a barrier to hydro-carbon gasses, radon and methane.

Typical Applications

As a waterproofing membrane as part of the Newton CDM System and be used as both the wall and the floor membrane for the waterproofing and gas control of:

  • Basements
  • Cellars
  • Vaults
  • Tunnels
  • Arches
BS 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).

Product Data

Code: M1-5-40

Size: Roll 2m x 20m

Colour: White

Weight: 500g/m²



Newton CDM System - Overview

The Newton Cavity Drain Membrane (CDM) System is a maintainable basement waterproofing solution, certified to BES 6001 by BRE Global, ideal for new-build basements and refurbishment projects.

The four components of the Newton CDM system

Comprising of four components: Cavity Drain Membranes, Drainage, Pumps and Control Systems, the Newton CDM System complies with the British Standard for Waterproofing and provides a Grade 3 habitable internal environment.

Cavity Drain Membranes and Drainage

Cavity drain membrane (CDM) systems are a maintainable, internal basement waterproofing solution, suitable for protecting below-ground environments against water that has penetrated through the structure. CDM Systems are known as ‘Type C’ waterproofing in British Standard 8102:2022 and are ideal for new-build, refurbishment and historic/listed projects.

Known as the most failsafe form of waterproofing, the cavity drain membranes capture ingressing water at the point of ingress, then the CDM drainage system manages and directs the water to an integral pumping system or drainage outlet for safe removal.

The Newton PAC-500 System also provides a combined CDM waterproofing and gas proofing system for below ground spaces that are at risk from ground gases.

Pumps and Control Systems

Once the water has been captured by the cavity drain membranes and drainage channels, it needs to be safely removed. The Titan-Pro is a packaged sump chamber and pump system designed specifically to be used with the Newton CDM System. Compatible with a variety of Newton pumps, it is ideal for almost any cavity drain waterproofing system.


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