Best Fixings for Wykamol Mesh & Cavity Drain Membranes
Choosing the Right Fixings for CM3, CM8, and Cavity Drain Membranes
When installing Wykamol CM3 Mesh Membrane, CM8 Mesh Membrane, or Cavity Drain Membranes, selecting the correct fixings is crucial for effective damp proofing and basement waterproofing. This guide covers the key differences between Wykamol Brick Plugs and Wykamol Plaster Plugs, ensuring a secure and watertight installation.
What Are Wykamol Waterproofing Membranes?
CM3 and CM8 Mesh Membranes
Both CM3 and CM8 Mesh Membranes are high-density polyethylene (HDPE) membranes designed for damp proofing. They provide a barrier against moisture while allowing internal finishes such as plaster or dot-and-dab board.
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CM3 Mesh Membrane – Ideal for walls with light moisture ingress.
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CM8 Mesh Membrane – Thicker and more robust, designed for areas with significant water penetration.
Wykamol Cavity Drain Membranes (CDM Systems)
Cavity Drain Membranes like CM8 and CM20 are essential for basement waterproofing. These membranes allow water to drain safely into a drainage system rather than attempting to block moisture.
Wykamol Brick Plugs vs. Wykamol Plaster Plugs
Choosing the right fixing ensures a long-lasting and effective waterproofing system. Below is a comparison of the two main options:

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Feature | Wykamol Brick Plug | Wykamol Plaster Plug |
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Best For | Brick, stone, concrete walls | Plaster, lightweight blocks, soft masonry |
Drill Hole Size | 10mm | 7mm |
Grip Strength | High mechanical grip for solid walls | Secure hold for softer surfaces |
Waterproof Sealing | Comes with integrated waterproof seals | Requires Wykamol Rope or Mastic for sealing |
Fixing Method | Drilled and tapped into solid walls | Inserted manually into softer surfaces |
How to Fix Wykamol CM3 and CM8 Mesh Membranes
Installing with Wykamol Brick Plugs (Best for solid masonry walls)
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Drill 10mm holes, 50mm deep, spaced 250-300mm apart.
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Position the mesh membrane against the wall.
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Insert Wykamol Brick Plugs and gently tap with a mallet.
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Seal around each plug using Wykamol Rope or Mastic.
Installing with Wykamol Plaster Plugs (Best for plastered or lightweight block walls)
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Drill 7mm holes at 250-300mm intervals.
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Secure the membrane with plaster plugs.
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Apply Wykamol Rope or Mastic for a watertight seal.
Fixing Wykamol Cavity Drain Membranes (CM8 & CM20)
Cavity Drain Membranes allow controlled water flow behind the system, preventing hydrostatic pressure buildup.
How to Install Using Wykamol Brick Plugs
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Drill 10mm holes at the recommended spacing.
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Insert Brick Plugs with pre-inserted seals for watertight fixing.
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Overlap joints and seal with Wykamol Overseal Tape.
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Ensure the membrane is secured without restricting water flow.
Why Use The Clever Shield for Waterproofing?
At The Clever Shield, we specialise in damp proofing, waterproofing solutions, and basement tanking. Our expert team provides professional installation of Wykamol CM3, CM8, and Cavity Drain Membranes, ensuring long-term protection from moisture and damp issues.
Need Expert Advice?
If you're unsure which fixings to use, contact us today 01268 472358! We offer Wykamol waterproofing products, expert recommendations, and professional installation services.