Wykamol CM8 Geotextile Membrane – Advanced External Waterproofing & Drainage Solution
The Wykamol CM8 Geotextile Membrane is a heavy-duty cavity drainage membrane, engineered for superior water management and external waterproofing. Designed for retaining walls, earth-covered structures, and basement waterproofing systems, it provides effective protection against water ingress, reducing hydrostatic pressure buildup while ensuring long-term structural integrity.
Key Features & Benefits:
✔ High-Strength HDPE Construction – Offers durability, impact resistance, and long-lasting performance.
✔ 8mm Stud Profile for Advanced Drainage – Channels water away from structures, preventing water pressure buildup.
✔ Integrated Geotextile Filter Layer – Prevents soil particles from clogging the drainage system, allowing water to pass through efficiently.
✔ External Waterproofing Compatibility – Works seamlessly with Wykamol HydroTank 1K & 2K coatings and other waterproofing systems.
✔ Easy Installation & Flexibility – Lightweight, easy to cut, and conforms to irregular surfaces for seamless application.
✔ Multi-Purpose Use – Ideal for retaining walls, basement walls, green roofs, podium decks, and other below-ground structures.
✔ UV-Stabilised & Thermal Insulation Benefits – Withstands environmental exposure while enhancing insulation performance.
✔ High Compressive Strength & Drainage Capacity – Supports backfilling with excavated earth without compromising efficiency.
Application Process:
✅ Step 1: Surface Preparation
- Ensure the surface is clean and dry.
- If applying over a waterproofed surface, confirm that the HydroTank system or coating is fully cured.
✅ Step 2: Membrane Installation
- Roll out the CM8 Geotextile Membrane against the external wall or structure.
- The geotextile side should face outward, allowing water filtration while preventing soil ingress.
- Cut the membrane to fit around penetrations or obstacles.
✅ Step 3: Fixing the Membrane
- Secure the membrane using Wykamol Brick Plugs or mechanical fixings, spaced 500mm apart.
- Maintain 100mm overlaps between membrane sheets to ensure an effective drainage system.
✅ Step 4: Drainage System Integration
- Install a perimeter drainage system (e.g., land drain or Wykamol Drainage Channel) at the base of the wall.
- Ensure the system directs water to a sump, soakaway, or designated discharge point.
✅ Step 5: Backfilling
- Backfill with clean, coarse gravel or free-draining material to enhance water movement.
- Avoid sharp objects or large stones that could damage the membrane.
Technical Specifications:
📏 Roll Size: 2.0m x 20m (40m² coverage per roll)
⚙️ Material: HDPE with a non-woven geotextile filter layer
⏳ Installation Time: Fast & efficient – can be installed in a single day
Next-Day Delivery Across the UK
📦 Clever Shield offers next-day delivery for Wykamol CM8 Geotextile Membrane across the UK, ensuring your waterproofing project stays on schedule.
Protect Your Structures from Water Ingress – Order Today!
Product Details
| Product Description |
CM8 Geotextile Membrane, Black |
CM20 Geotextile Membrane, Black |
| Product Code |
CM8GEOTEXT |
CM20GEOTEXT |
| Packaging and Size |
2 m x 20 m, 24.4 Kg |
2 m x 20 m, 40 Kg |
| Coverage |
40 m² |
40 m² |
| Storage |
Store in an upright position, under cover and away from high temperatures and open flames |
Store in an upright position, under cover and away from high temperatures and open flames |
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