Type 1 Criteria
Intensive Green Roofs
- Heavy load bearing systems, hard landscape, multidiscipline use
- Deeper substrate beds 150-1000mm
- Heavy traffic systems
- Communal use, residential, office, sports
- Blend of hard and soft landscaping
- High maintenance, pruning, aftercare and irrigation requirements
Examples of content
- Slab, deck, paving hard landscape finished
- Artificial turf systems
- Shrub, tree and intensive planted areas
- Sport areas, Sports turf systems
Type 2 Criteria
Semi Extensive Green Roofs
- A blend of intensive planting in an extensive system
- Medium depth of substrates, 150-200mm
- Low traffic high aesthetic environmentally functioning systems
- High ecological value
- Greater diversity of species with greater rooting capacity within system
- Some communal and hard landscaping components
Examples of content
- Some Bio-Diverse systems (+100mm substrate)
- Semi Extensive plug and young plant systems (high species density plantings)
- Semi communal roofs with hard landscape and low traffic extensive
- Wildflower turf systems
Type 3 Criteria
Extensive Green Roofs
- Low traffic systems
- High environmental and ecological importance
- Thinner substrate beds, lighter systems
- 75-150kg/sqm saturated
- High aesthetic, low to moderate maintenance
- Designed for green roof functional accreditation
Examples of content
- Modular systems
- Bio-diverse systems (> 100mm substrate)
- Sedum and wildflower plug, seed and blanket systems
