Premium 3mm Meshed Waterproofing Membrane for Below-Ground Applications
The Newton CDM 503 Mesh Membrane is a BBA-certified, 3mm cavity drain membrane designed for below-ground waterproofing. With a meshed surface, it provides an excellent key for lime mortars, renders, plasters, or dot & dab plasterboard. At only 3.5mm in total thickness, it is the ideal choice for space-restricted environments.
Newton CDM 503 Mesh Membrane is part of the Newton CDM System, a maintainable waterproofing solution that complies with BS 8102:2009 for protecting underground structures from water ingress.
Key Benefits
✔ BBA Certified (94/3010) – Independently tested & approved for quality assurance. ✔ Long-Term Durability – Guaranteed against deterioration for 30 years, with a minimum 50-year life expectancy. ✔ Superior Key for Finishes – Meshed surface optimises adhesion for renders, plasters & plasterboard. ✔ High Resistance – Unaffected by water, alkalis, saline solutions, organic acids, bacteria & fungi. ✔ Structural Integrity – High compressive strength ensures stability under load. ✔ Ideal for Compact Spaces – 3mm stud profile makes it perfect where space is limited.
Typical Applications
✅ Basements & Cellars ✅ Tunnels & Vaults ✅ Earth-Retained Walls ✅ Archways & Listed Buildings ✅ Waterproofing Areas Requiring a Render or Plaster Finish
Product Data & Specifications
Product Code: M11
Roll Size: 2.0m x 20.0m (40m² coverage)
Colour: White/Translucent
Compressive Strength: 320 kPa
Thermal Conductivity: 0.461 W/mK
Water Vapour Resistance: >3020 MNs/g
Fire Resistance: Euroclass E
Chemical & Oxidation Resistance: 100%
Compliant with BS 8102:2009 – Structural Waterproofing Standards
Newton CDM 503 Mesh Membrane aligns with BS 8102:2009, the British Standard for protecting below-ground structures from water ingress. As a maintainable system, it meets regulatory requirements and ensures long-term protection.
Recommendation: To achieve optimum performance, we advise installation by a Newton Specialist Contractor (NSBC).
