Designing green roofs for stormwater management
The number of vegetated roofs has consistently experienced double-digit growth over the past decade. An annual market survey conducted by Green Roofs for Healthy Cities (GRHC) shows the North American industry grew by 10 per cent in 2013 over the previous year, when a total of 519,151 m2 (6.4 million sf) were installed over 950 projects