Wykamol CM20 Geotextile Membrane – High-Capacity Drainage & Protection
The Wykamol CM20 Geotextile Membrane is a heavy-duty, cavity drainage membrane designed for high-water-volume applications. Featuring a 20mm stud profile, this advanced HDPE membrane with a non-woven geotextile filter effectively channels water away from structures while preventing soil ingress. It is ideal for external basement waterproofing, podium decks, retaining walls, and green roofs.
Key Features & Benefits
✔ Superior Drainage Capacity – The deep 20mm studs provide a high flow rate, ensuring effective groundwater management.
✔ Geotextile Filtration – The integrated non-woven geotextile prevents soil and debris from clogging the drainage system.
✔ Robust HDPE Construction – Resistant to chemicals, root penetration, and structural movement.
✔ External Waterproofing Compatibility – Works with Wykamol HydroTank coatings and other external waterproofing systems.
✔ Quick & Easy Installation – Lightweight yet durable, cut and shape to fit any surface.
✔ Multi-Purpose Application – Ideal for retaining walls, podium decks, earth-covered structures, car parks, and basements.
Typical Applications
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External Waterproofing – Protects structures from hydrostatic pressure and water ingress.
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Podium Decks & Green Roofs – Provides high-capacity drainage beneath landscaping.
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Retaining Walls & Earth-Sheltered Buildings – Acts as a drainage layer to prevent water buildup.
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Radon Barrier – Certified protection against harmful ground gases.
Installation Process
1️⃣ Prepare the Surface – Ensure it is clean, dry, and stable.
2️⃣ Position the Membrane – Roll out CM20 Geotextile Membrane with the geotextile side facing outward.
3️⃣ Secure the Membrane – Fix with Wykamol Brick Plugs, spacing at 500mm intervals.
4️⃣ Install Drainage System – Use Wykamol Drainage Channels or land drains to redirect water.
5️⃣ Backfilling – Fill with coarse gravel to enhance drainage performance.
Product Specifications
| Product |
CM8 Geotextile Membrane |
CM20 Geotextile Membrane |
| Product Code |
CM8GEOTEXT |
CM20GEOTEXT |
| Size |
2m x 20m |
2m x 10m |
| Weight |
24.4 Kg |
40 Kg |
| Coverage |
40m² |
20m² |
| Storage |
Store upright, under cover, away from heat & flames |
Store upright, under cover, away from heat & flames |
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