External Drainage & Protection Membrane – High-Performance Two-Core Drainage Sheet
The External Drainage & Protection Membrane is a high-performance two-core drainage sheet, featuring a non-woven geotextile filter layer thermally welded to a water-impermeable HDPE (High-Density Polyethylene) drainage membrane. Designed to efficiently manage subsurface water, it prevents water pressure buildup against structures while providing robust protection against aggressive ground chemicals.
With exceptional compressive strength and resistance to movement, this membrane acts as a slip layer, allowing backfill to settle without applying excessive pressure to the structure. Its filtration capabilities prevent suspended soil particles from clogging drainage systems, ensuring long-term performance.
Key Benefits:
✅ Prevents water pressure buildup – Essential for external waterproofing systems
✅ Resistant to aggressive ground chemicals – Long-lasting protection against soil contaminants
✅ Acts as a slip membrane – Absorbs movement and stress as backfill settles
✅ Allows for backfilling with excavated earth – Reduces costs and simplifies installation
✅ Extremely durable – High compressive strength minimizes damage risks, even without a protection board
✅ Efficient filtration – Geotextile layer prevents clogging by filtering out fine soil particles
✅ Quick & easy installation – Compatible with a range of fixing and installation products
Typical Applications:
✔ Drainage layer in external waterproofing systems (BS 8102:2022 compliant)
✔ Protection layer for sheet-applied and liquid-applied external tanking membranes
✔ Prevents groundwater buildup behind retaining walls
✔ Chemical-resistant protection for structures exposed to aggressive ground conditions
Product Specifications:
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Code: M18
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Roll Size: 12.5m x 2.0m
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Total Coverage Area: 25m²
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Colour: Black
💪 Ensure superior drainage and structural protection – Order the External Drainage & Protection Membrane today!
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