Description
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
- External Waterproofing – Protects structures from hydrostatic pressure and water ingress.
- Podium Decks & Green Roofs – Provides high-capacity drainage beneath landscaping.
- Retaining Walls & Earth-Sheltered Buildings – Acts as a drainage layer to prevent water buildup.
- 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 |
Downloads
- CM8-GEOTEXTILE-BWM06-TDS8.pdf
- CM20-GEOTEXTILE-CDM-BWM07-TDS7.pdf
- CM8-Geotextile-BBA-Cert-2022-05.pdf
- CM20-Geotextile-BBA-Cert-2022-05.pdf
- CM8GEOTEXT-DECLARATION-OF-PERFORMANCE-WPDOP073.pdf
- CM8GEOTEXT-DECLARATION-OF-CONFORMITY-WPDOC073.pdf
- CM20GEOTEXT-DECLARATION-OF-CONFORMITY-WPDOC083.pdf
- CM20GEOTEXT-DECLARATION-OF-PERFORMANCE-WPDOC083.pdf
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