Newtonite Lath Mesh Membrane – Advanced Internal Damp Proofing Solution
High-Performance Mesh Membrane for Plastering, Rendering & Dot & Dab Plasterboard
The Newtonite Lath Mesh Membrane is a composite damp proof membrane designed for internally applied waterproofing. It is available in 3mm HDPE or 5mm HDPP variants and features a rot-proof polythene mesh, heat-welded to one side during manufacturing. This meshed surface creates a strong mechanical key, making it ideal for plastering, rendering, or dot & dab plasterboard installations.
🔹 Please Note: This product replaces the previous Newton 803 M9 & 805 M10 membranes.
Key Benefits
✔ Guaranteed Moisture Protection – Creates a permanent barrier, preventing damp penetration and salt contamination.
✔ Strong Mechanical Key – The integrated mesh ensures excellent adhesion for plasters, renders, and dot & dab plasterboard.
✔ No Chemical DPC Required – A clean and eco-friendly alternative to injected damp-proof courses.
✔ Quick & Easy Installation – Can be installed over existing render in many cases, minimizing time and labor costs.
✔ Resistant to Moisture & Vapour – Fully damp-proof while allowing controlled vapour diffusion.
✔ Minimal Surface Preparation Required – No need for damaging or disruptive treatments before application.
Typical Applications
🔹 Damp proofing solution for walls affected by rising damp.
🔹 Base layer for plastering, rendering, or dot & dab plasterboard in damp conditions.
🔹 Refurbishment projects where existing renders can be left in place.
Product Data & Specifications
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Product Code: 803 M9 & 805 M10
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Roll Sizes: 1.2m x 10m & 2m x 20m
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Total Coverage: 12m² & 40m²
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Colour: White/Translucent
Installation Overview
1️⃣ Cut the membrane to size and position it against the wall.
2️⃣ Secure using Newton MultiPlugs or Mesh Plugs at regular intervals.
3️⃣ Apply plaster, render, or dot & dab plasterboard directly onto the mesh surface.
4️⃣ Complete finishing for a dry, durable, and long-lasting surface.
Downloads
Technical Data
| Installed Performance |
Result – M9 |
| Resistance to fire |
Euroclass E |
| Water tightness at 60 kPa; 24h |
Pass |
| Tensile strength MD |
416 N |
| Tensile strength CD |
488 N |
| Resistance to static loading |
>20 kg |
| Compressive strength |
250 kN |
| Installed Performance |
Result – M10 |
| Thermal conductivity |
0.480 W/mK |
| Water vapour diffusion resistance – Sd value |
200m |
| Water vapour diffusion resistance – μ value
|
400000 μ |
| Water tightness at 60 kPa; 24h |
Pass |
| Resistance to fire |
Euroclass E |
| Chemical resistance – Excellent |
100% |
| Oxidation resistance – Excellent |
100% |
| Resistance to static loading |
>20 kg |
