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Extensive Systems

EXTENSIVE ROOFS ARE A LIGHTWEIGHT, LOW-MAINTENANCE ROOF SYSTEM, TYPICALLY WITH SUCCULENTS OR OTHER HARDY PLANT SPECIES (OFTEN SEDUM) PLANTED INTO A SHALLOW SUBSTRATE (TYPICALLY LESS THAN 100 MM) THAT IS LOW IN NUTRIENTS.

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ICB Waterproofing System

ICB Waterproofing System

PL300 Protection Fleece

PL300 Protection Fleece

Terrace Supports

Terrace Supports

Paving

Paving

Extensive System

Extensive roofs are a lightweight, low-maintenance roof system, typically with succulents or other hardy plant species (often sedum) planted into a shallow substrate (typically less than 100 mm) that is low in nutrients.

TYPICAL WEIGHTS/LOADING (saturated)

  • Extensive Green Roof
  • Sedum with rootzone (wet weight) 40kg/m2
  • Substrate: (based on minimum 60mm) 57kg/m2
  • Drainage/reservoir layer 13kg/m2
  • Waterproofing 1.7kg/m2
  • 100mm thick insulation 6kg/m2
  • Total 117.7kg/m2

VEGETATION :

  • Plug Plants
  • Sedum Blanket
  • Wildflower Blanket
  • Seeded Roof 
  • Low maintenance needs
  • Lightweight system with no general access
  • Ideal for efficient stormwater management

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