NewSeal 420 DeckDrain

NewSeal 420 DeckDrain – Advanced Drainage & Water-Retention Membrane for Green Roofs

NewSeal 420 DeckDrain is a high-performance drainage and water-retention membrane, designed for extensive green roofs featuring sedum, moss, herbaceous plants, or grass. Its unique bonded geotextile ensures maximum water retention while preventing soil intrusion into the water-holding cups, providing a larger and more effective water reservoir than other 20mm-deep membranes.

When the reservoir is full, the large drainage holes allow excess water to flow freely, preventing saturation and waterlogging.

Key Benefits:

✔ Superior Water Retention – Maintains a larger water reservoir than conventional membranes.
✔ Prevents Geotextile Sagging – Unique bonded geotextile prevents soil intrusion into water-holding cups.
✔ Fast Drainage Flow – Large drainage holes prevent waterlogging and allow for efficient runoff.
✔ Highly Durable & Resilient – Tough HDPE core withstands heavy loads.
✔ Enhanced Soil Filtration – Geotextile layer filters out suspended soil particles (fines).
✔ Easy & Quick Installation – Lightweight, flexible, and designed for efficient laying.

Typical Applications:

✔ Extensive Green Roofs – Ideal for shallow planting above decks, flat roofs, or pitched roofs.
✔ Drainage & Water Management – Ensures controlled water retention while allowing excess flow.
✔ Sustainable Building Solutions – Supports eco-friendly roofing systems.

Suitable Substrate:

✔ Directly above the primary deck or roof waterproofing membrane.

Product Data:

Technical Performance:

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