CDM 508 - 8mm cavity drain membrane for basements

Newton CDM 508 is a BBA-certified, high-quality, 8mm cavity drain waterproofing membrane. It is designed for use within the Newton CDM System for internally applied waterproofing that 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.

• 8mm-deep cavity drain waterproofing membrane

• Rot-proof and resistant to bacteria, fungi, and small organisms

• No extensive and damaging preparation to wall surface required

• Quick to install

• Supplied in 500g/m² and 700g/m² variants with multiple size options.

• Supports Grade 3 internal environments as defined by BS 8102:2022

• Part of a maintainable waterproofing system compliant with BS 8102:2022

• BBA Agrément Certificate 22/6357

Products

Newton CDM 508 membrane is available in the following variants:

• CDM 508 700g/m² (Code M1-7-48): 2.4 x 20m – 48m²

• CDM 508 700g/m² (Code M1-7-40): 2 x 20m – 40m²

• CDM 508 500g/m² (Code M1-5-48): 2.4 x 20m – 48m²

• CDM 508 500g/m² (Code M1-5-40): 2 x 20m – 40m²

Typical applications

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

• Walls

• Floors (700g/m² variants only)

• Vaults

• Tunnels

Suitable substates - walls

• Concrete

• Brick

• Concrete block

• ICF – with special longer fixing plugs

Suitable substates - floors

• Concrete raft or slab

• Newton Fibran XPS 500-C closed cell extruded polystyrene insulation

Suitable substates - soffits

• Concrete – to fall

Properties

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.

Technical data