Newton 408 Deckdrain

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:

• Block paving or flooring slabs are bedded on sand
• Soil-filled planters are integrated into the roof or deck
• 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:

• Code: M33
• Roll Size: 20m x 2.0m
• Total Coverage Area: 40m²
• Colour: Black

Technical Performance:

• Compressive Strength (Temporary Loading): 280 kPa
• Compressive Strength (Permanent Loading): 10 kPa
• Water Vapour Diffusion Resistance (Sd Value): >604m
• Tensile Strength (Machine Direction): 13.6 kN/m²
• Tensile Strength (Cross Direction): 14.7 kN/m²
• 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

•  Download NewSeal 408 DeckDrain Data Sheet

•  Download NewSeal 408 DeckDrain Safety Data Sheet

•  Download NBS Clause