8mm Drainage Membrane for Decks & Flat Roofs – Double Cuspated Design
The 8mm Drainage Membrane for Decks & Flat Roofs is a high-performance, double-cuspated drainage layer designed to provide superior water management above deck and flat roof waterproofing membranes. Featuring a polypropylene geotextile filter layer bonded to a water-impermeable HDPE core, this innovative membrane offers two layers of drainage, ensuring water flows freely to roof drainage outlets without the risk of trapping.
Key Benefits:
✅ Ensures efficient water drainage – Prevents water accumulation above deck membranes
✅ Double-cuspated design – Provides drainage on both upper and lower surfaces for superior performance
✅ Filtration capability – Geotextile layer prevents suspended soil particles (fines) from clogging the system
✅ Quick & easy installation – Ideal for both residential and commercial applications
✅ Durable & high-strength – Designed to withstand loading and environmental exposure
Typical Applications:
✔ Drainage layer for decks, balconies, and flat roofs, particularly where:
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Block paving or flooring slabs are bedded on sand
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Soil-filled planters are integrated into the roof or deck
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Intensive green roofs are planted above the deck membrane
✔ Vertical drainage layer in externally applied basement waterproofing systems
Suitable Substrate:
🔹 Directly above primary deck or roof waterproofing membrane
Product Specifications:
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Code: M33
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Roll Size: 20m x 2.0m
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Total Coverage Area: 40m²
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Colour: Black
Technical Performance:
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Compressive Strength (Temporary Loading): 280 kPa
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Compressive Strength (Permanent Loading): 10 kPa
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Water Vapour Diffusion Resistance (Sd Value): >604m
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Tensile Strength (Machine Direction): 13.6 kN/m²
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Tensile Strength (Cross Direction): 14.7 kN/m²
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Chemical & Oxidation Resistance: 100% Excellent
Downloads:
📄 NewSeal 408 DeckDrain Data Sheet | 📄 Safety Data Sheet | 📄 NBS Clause
💪 Enhance your deck and flat roof drainage system with this high-performance membrane – Order today!
Downloads
