HKU’s Sam Hui lists the public and private benefits
Updated on Jul 09, 2008 – SCMP
Public benefits
- Mitigate urban heat island effect
- Reduce dust and pollutant levels
- Rainwater retention
- Natural habitat for animals/plants
- More natural look for urban landscape
Private benefits
- Increase life expectancy of roofs
- Reduce noise levels
- Enhance thermal insulation
- Heat shield
- Better use of space
- Reduce risk of glare for surrounding buildings