Wykamol CM3 Mesh Membrane

CM3 Cavity Drain Mesh Membrane – High-Performance Waterproofing Solution

Overview

The Wykamol CM3 Cavity Drain Mesh Membrane is a high-density polyethylene (HDPE) waterproofing solution designed for Type C cavity drain systems. With a 3mm stud profile, it creates a ventilated cavity between the structure and the internal finish, allowing moisture to drain effectively and preventing damp ingress. It is ideal for basement waterproofing, structural waterproofing, and damp-proofing applications, providing a Grade 3 environment as per BS 8102:2009 and NHBC Chapter 5.4 standards.

Key Benefits

✔ Compliant with BS 8102:2009 – Approved for Type C waterproofing in below-ground structures.
✔ Fast Installation – Minimal substrate preparation reduces time and labor costs.
✔ Flexible & Versatile – Easily adaptable to complex shapes like windows, doors, and pipes.
✔ No Drying Time – Allows for immediate finishing, reducing project timelines.
✔ Durable & Resistant – Waterproof, salt-inhibiting, and resistant to root penetration and contaminants.
✔ Space-Efficient – Thin 3mm stud profile minimizes internal space loss.
✔ Multiple Finishing Options – Compatible with direct plastering and dot & dab plasterboard applications.
✔ Suitable for Various Applications – Ideal for basements, cellars, and retaining walls.

Technical Specifications

• Material: High-density polyethylene (HDPE)

• Thickness: 3mm

• Weight: Varies by size (see table below)

• Sizes Available:

  • 1m x 10m (6kg, covers 10m²)

  • 1m x 20m (11kg, covers 20m²)

  • 1.2m x 20m (12kg, covers 24m²)

  • 2m x 20m (21kg, covers 40m²)

• Storage: Store upright, in a covered area away from extreme temperatures and open flames.

• Life Expectancy: Designed to last the lifetime of the structure when installed correctly.

Applications

CM3 Mesh Membrane is engineered for Type C cavity drain waterproofing in:

• Basements & Cellars – Ideal for new and existing underground spaces.

• Structural Walls – Protects concrete, brick, and block walls from dampness.

• Retaining Walls – Creates a dry and habitable environment.

• Tunnels & Subways – Ensures long-term waterproofing in underground structures.

• Listed & Historic Buildings – Provides protection without damaging original structures.

Installation & Application

Recommended Installation Methods:

• Minimal Substrate Preparation – Can be applied directly to walls and floors.

• Cut to Fit – Easily trimmed with a sharp blade for custom installations.

• Fixing – Installed using CM3 Mesh Membrane Fixing Plugs and Waterproofing Tape.

• Finishing – Suitable for direct plastering or dot & dab plasterboard installation.

Certifications & Approvals

• BS 8102:2009 Compliant – Approved for Type C cavity drain membrane systems.

• BBA Certified – Assessed for long-term durability and effectiveness.

• NHBC Chapter 5.4 Compliant – Recognised by UK building regulations.

Why Choose CM3 Cavity Drain Mesh Membrane?

CM3 Mesh Membrane offers a proven, reliable, and cost-effective solution for below-ground waterproofing. Whether you are a contractor, architect, or homeowner, this membrane ensures superior damp-proofing while allowing for flexible finishing options.

For more information or bulk pricing, call us now at 01268 472358.

Downloads

Method Statement

Method Statement CM3 Cavity Drain Mesh Membrane MSCM01 2018 08

BBA

BBA Certification Wykamol CM3 Cavity Drain Mesh Membrane 18 5595

Performance

Declaration Of Performance CM3 Cavity Drain Mesh Membrane WPDOP02 2019 08

TDS

CM3 Mesh Cdm Data Sheet

Video