Newton CDM 503 Mesh Membrane

Newton CDM 503 Mesh Membrane – BBA Certified Cavity Drain Membrane

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).

Downloads

•  Download CDM 503 Mesh Membrane Data Sheet

•  Download CDM 503 Mesh Membrane Safety Data Sheet

•  Download CDM 503 Mesh Membrane Declaration Of Performance

•  Download CDM 503 Mesh Membrane BBA Certificate

•  Download CDM System Installation Manual