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Newton CDM 508

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High quality Newton CDM 508 products

What is Newton CDM 508?


Newton CDM 508 is a 8mm Cavity Drain Membrane for Basements. Newton CDM 508 is a high quality cavity drain waterproofing membrane, supplied in a number of sizes and in 500g/m2 and 700g/m2 variants for use within the Newton CDM System, an internally applied waterproofing system that also includes drainage and pumping systems.

CDM 508 is suitable for waterproofing earth retained walls and vaulted soffits and floors. It 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 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.
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Frequently Asked Questions About Newton CDM 508

What variants of the Newton CDM 508 are available?

2m x 20m at 500g/m2
2.4m x 20m at 500g/m2
2m x 20m at 700g/m2
2.4 x 20m at 700g/m2

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Our last working day of the year is Tuesday 23rd December. Final orders for delivery before Christmas should be placed by 2pm on Friday 19th December. Our trade counters in Tonbridge and Leeds will also remain open for collections on 23rd December. Both branches will reopen in the New Year on Friday 2nd January 2026.