Diadem Extensive Green Roof System On Concrete Deck

Roof type:

Warm roof system.


  • Concrete slab.
  • Slope: Flat (zero degrees).

Waterproofing (specified in J41):

- Membrane:

Unosint Antiradice, 4 mm Elastopolymer modified bitumen membrane incorporating preventol B Anti-root compound, fully torch bonded on 3 mm Top S Polyester reinforced Elastopolymer modified bitumen base sheet.

- Vapour control layer:

Vapobar 1 foil cored 3 kg/m² modified bitumen membrane, fully bonded.

- Thermal insulation:

  • Composite rigid PIR thermal insulation incorporating 12 mm high density bitumen impregnated wood fibreboard facing.
  • Thickness: 120 mm.

General information

Uniclass 2015

Ss_45_40_47_28 Extensive green roof systemsPrimary


Q37/130 Extensive green roof

Specification data - Extensive green roof systems

Product Reference

Diadem Extensive Green Roof System On Concrete Deck



Inspection chambers

Roof drainage outlets

Standard product features


  • VLU 300 Polypropylene fleece.
  • Density: 300 g/m².

Drainage layer:

  • DE 40 Recycled polystyrene drainage board.
  • Depth: 40 mm.

Filter membrane:

  • APP Diadem VLF 150 Polypropylene fleece.
  • Density: 150 g/m².

Extensive growing medium:

  • Material: NPK and Mg Certified Growing Media 5–7mm sieve size.
  • Depth: 50 mm.
  • Ameliorant/ Conditioner: Selected organic matter.
  • Declaration of analysis: Submitted on request.
  • Parameters: Moisture, PH, NPK, Mg.

Vegetation blanket:

  • Selected Sedum blanket.
  • Thickness: 30 mm.
  • Vegetation coverage (minimum 75%): 80–90%.

Product Options


- Inspection chambers:

  • APP Diadem KSE 15.
  • Material: Recycled Polypropylene.
  • Size: 300 x 300 mm.
  • Depth: 150 mm.
  • Access covers: Circular with central grating.
  • Features: Legible.

- Roof drainage outlets:

  • AV 400 Gravity outlet.
  • Material: Cast Aluminium.
  • Size: 100 mm.
  • Fixing: Cast mechanically.

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