Good Practice Guide - Green roofs

PAS 100 compost can provide the organic component of a green roof substrate

Green roofs are vegetated layers that sit on top of the conventional waterproofed roof surfaces of a building. They contribute to sustainable drainage systems, which serve to reduce peak rates and total volumes of storm water run-off. The substrates used to support vegetation in a green roof commonly comprise aggregates and various sources of organic material. PAS 100 compost could potentially represent a readily available and sustainable source of this organic matter.