DiaDrain-25h

Flow-delay retention board (Product Code: 310203)

Product Details

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Product Description

 Flow-delay retention board with ETA and CE marking, areas suitable for passenger car traffic, made of recycled high-impact polystyrene, 25 mm high, stepped barrier form, with deep-drawn recessed evaporation vents and water channel system on the underside, compressive strength 553,87 kN / m2 (unfilled), water flow capacity on 2% roof slope 0.51 l / mxs certified according to EN ISO 12958, water storage capacity 11.8 l / m2, runoff reference value according to FLL: 0.29, microbiological resistance tested (EN 12225), fire resistance classification “BROOF (t2)” (EN 13501-5).


Product: DIADEM® DiaDrain-25H
Producer’s certificate: A.P.P. Kft.
Website: www.diadem.com

Advantages

 • High rainwater retention ca. nearly 12 l/m2 of water storage capacity
• Delayed rainwater runoff stepped barriers avoid overuse of wastewater channel system
• Runoff reference value (C) 0,29 water delay over 70% according to FLL1
• Microbiological resistance test (EN 12225) protective function for waterproofing against biological effects
• Recessed evaporation vents unobstructed aeration
• Negligible overlap loss economical installation and cost savings
• Increased contact area decreased surface pressure

DIADEM® build-up

  • DiaMatPRO sedum mat
  • extensive substrate (SEM) 4-15 cm
  • VLF-150 separation and filter geotextile
  • DiaDrain-25H drainage board
  • VLU-300 mechanical protecting geotextile
  • root-resistant waterproofing membrane
  • additional layer

Application

 Flow-delay retention board for extensive and semi-intensive greenroofs, areas suitable for
passenger car traffic, made of recycled highimpact polystyrene (HIPS). The flow-delay and the retention functions are provided by the stepped barrier design.

Technical data

Board size (mm): 2020 × 1100 × 25
Rainwater retention capacity (l/m2): 11,8
Runoff reference value (C)1: 0,29
Overlap loss: ~3%
In-fill volume (l/m2): 13,5
Surface weight (kg/m2): 1,36
Fire resistance classification (EN 13501-5): BROOF(t2)
Compressive strength unfilled (kN/m2): 553,87
Material: recycled high-impact polystyrene (HIPS)
Water flow capacity (EN ISO 12958) (l/m*s): at 2%: 0.51 • at 3%: 0.61 • at 5%: 0.78
Material: recycled high-impact polystyrene (HIPS)
Installation: adjacent to each other or overlapped

Storage: horizontally, for long-term storage protect from UV radiation

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