Newton Newtonite 803 Non-Mesh

Newtonite 803 Damp-Proof Wall Membrane – 3mm Above Ground Protection

The Newtonite 803 Damp-Proof Wall Membrane is a BBA-certified, high-quality solution for above-ground damp proofing. Designed as an alternative to meshed membranes such as Newtonite 803 Mesh or NewLath 805, this membrane is ideal when a meshed surface for direct plastering or rendering is not required. It is commonly used where the wall finish involves timber battens, dry-lining frames, or block walls.

With a shallow 3mm stud profile, Newtonite 803 effectively isolates the wall finish from damp walls, providing long-term protection while maintaining space efficiency. It is lightweight, easy to install, and highly resistant to water, salts, organic acids, and bacterial growth.

Key Benefits:

✅ Effective damp isolation – Prevents moisture transfer to wall finishes
✅ Minimal wall preparation required – No need for extensive or damaging surface treatments
✅ Fast & easy installation – Lightweight, clean, and simple to cut with a knife or shears
✅ Highly resistant – Protects against efflorescent salts, hydrocarbons, and rot
✅ Space-saving – 3mm stud profile is ideal for areas where depth is limited
✅ Durable & long-lasting – 30-year guarantee with a 50-year life expectancy

Typical Applications:

✔ Damp-proof membrane for above-ground walls where a meshed surface is not required
✔ Used with timber battens, dry-lining frames, or block walls
✔ Ideal for residential and commercial damp-proofing projects

Product Specifications:

• Code: M20
• Size: 2.0m x 20m roll (40m² coverage)
• Thickness: 0.5mm with 3mm raised studs
• Color: White/Translucent

Technical Performance:

• Compressive Strength (Temporary Loading): >320 kPa
• Compressive Strength (Permanent Loading): 100 kPa
• Thermal Conductivity: 0.461 W/mK
• Water Vapour Diffusion Resistance (Sd Value): >604m
• Fire Resistance: Euroclass E
• Chemical & Oxidation Resistance: 100% Excellent

Associated Products for Installation:

• Newton 800 Mesh Plugs - membrane fixings to walls above ground
• Newton Multiplugs -  membrane fixings to walls below ground
• Newton 800 Cob Plugs - membrane fixings to walls above ground - poorer quality substrates such as cob walls
• Newton Waterseal Rope - plug sealing
• Newton Waterseal Tape - membrane joint sealing
• Newton 800 Mastic - an alternative to sealing with rope and tape
• Newton Overtape - floor and wall joint sealing

💪 Protect your walls with Newtonite 803 Damp-Proof Membrane – Order now for long-term damp protection!

Downloads

• Download Data Sheet

• Download Declaration Of Performance