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Biodiverse low maintenance green roof designed to create or replace natural habitats. Biodiverse roofs can be specified to meet local Biodiversity Action Plans or to support specific flora and fauna, including bats, bees, butterflies etc.

System components:

  • Rhepanol hg.
  • Verdi-Drain-U.
  • Verdi-Drain25.
  • Verdi-Drain-F.
  • VerdiRoof Extensive.
  • Vegetation.
  • Decorative aggregates.

General information
Specification data
Product Reference

VerdiRoof Biodiverse Green Roof System

Waterproofing membrane

Rhepanol hg

Protection layer


Drainage layer


Filter membrane


Planting medium -

VerdiRoof Extensive


Insert requirement, available 50–450 mm.


Not required

Left to nature to self-colonize.

Local native plug plants

Vegetation barrier

Decorative aggregates

Standard product features

Build-up height:

75–200 mm.


90–232 kg/m².

Waterproofing membrane:

High quality single ply membrane with excellent green credentials, designed especially for green roofs.

Protection layer:

300 g/m² moisture retention layer which also protects the waterproof layer.

Drainage layer:

High capacity reservoir with quick drainage properties made from recycled high density polystyrene. 25 mm deep dual cuspated and perforated.

Filter membrane:

150 g/m² particle fleece separating VerdiRoof growing medium to avoid saturating the rootzone.

Planting medium:

Specialist mineral based plant growing medium consisting of pumice, bark compost and unique carbon capture pellet. Factory blended and stabilized against de-mixing, the substrate provides a high total pore volume balanced with good nutritive substance buffering for exceptional plant germination and growth, while providing carbon negative figure of 7 kg/m³.