Newton CDM 508R Cavity Drain Membrane & Gas Barrier

Newton CDM 508R is a heavy-duty 8mm cavity drain membrane and certified gas barrier. Protects against water ingress and ground gases like radon and methane.
Regular priceFrom £176.05 Ex VAT
£211.26 Inc VAT
Standard delivery by

Free delivery over £300 excluding VAT

Description

Newton CDM 508R is a professional-grade, 8mm-stud cavity drain membrane that serves a dual purpose as both a "Type C" waterproofing system and a robust barrier against ground gases and hydrocarbons. It is significantly heavier and stronger (700g/m²) than standard 8mm membranes, providing enhanced durability and long-term stability. When installed as part of the Newton CDM System, it creates an air gap between the structure and the internal finish, allowing water to be managed and directed to a drainage system. It is BBA-certified and has been independently tested for resistance against radon, methane, CO2, and liquid hydrocarbons, making it an essential component for projects requiring both waterproofing and gas protection.

Benefits

  • Dual-action protection: functions as a high-performance waterproofing membrane and a certified gas barrier
  • Exceptional durability with a 30-year guarantee and a life expectancy equal to the design life of the building
  • High compressive strength makes it suitable for use on both walls and floors under heavy loading
  • Chemically inert and resistant to bacteria, fungi, and aggressive mineral/organic acids
  • Quick to install and requires minimal surface preparation compared to traditional tanking systems

Good to know

  • Available in two roll sizes: 2.0m x 20m (40m²) and 2.4m x 20m (48m²)
  • Product codes: M2R (2.0m) and M1R (2.4m)
  • Recognized as the primary membrane for the Newton PAC-500 combined gas and waterproofing system
  • BBA Certification Number: 94/3010
  • Features a white finish, providing a clean and bright substrate for internal finishes

Technical Information

Product Specifications

BrandNewton Waterproofing
Length20m
Width2m
ApplicationAn internally applied cavity drain membrane for the waterproofing and gas protection of basement walls, floors, and vaulted ceilings.
Coverage40m²