Extensive roofs are generally thin, lightweight roof systems that typically have a
planting media measuring 40mm to 100mm deep. Green-tree Roof Garden Extensive
Substrate is ideal for incorporation into expansive green roof projects that require
very little maintenance, such as sedum roofs.

Intensive green roofs typically by design are of a heavy construction with weights varying
across the span of the roof. The substrate used in intensive green roofs can vary in
depths from 100mmm to 1000mm to accommodate large plants and plant groupings.