There are two types of green roof.
Green roof size.
Intensive roofs which are thicker with a minimum depth of 12 8 cm 5 1 16 in and can support a wider variety of plants but are heavier and require more maintenance and extensive roofs which are shallow ranging in depth from 2 cm 13 16 in to 12 7 cm 5 in lighter than intensive green roofs and require minimal maintenance.
A green roof also known as a living or vegetated roof incorporates multiple layers such as waterproofing membrane and protective layer on the traditional roof.
Report overview the global green roof market size was valued at usd 1 1 billion in 2019 and is expected to grow at a compound annual growth rate cagr of 17 from 2020 to 2027.