6.5.1 Vegetated Roof
6.5.1 Vegetated Roof
An extensive vegetated roof cover is a veneer of vegetation that is grown on and completely covers an otherwise conventional flat or pitched roof (<30 degree slope),endowing the roof with hydrologic characteristics that more closely match surface vegetation than the roof. The overall thickness of the veneer may range from 2 to 6 inches and may contain multiple layers, consisting of waterproofing, synthetic insulation, non-soil engineered growth media, fabrics, and synthetic components. Vegetated roof covers can be optimized to achieve water quantity and water quality benefits. Through the appropriate selection of materials, even thin vegetated covers can provide significant rainfall retention and detention functions.
Structural BMPs
- Volume/Peak Rate Reduction by Infiltration BMPs
- 6.4.1 Pervious pavement with infiltration bed
- 6.4.2 Infiltration Basin
- 6.4.3 Subsurface Infiltration bed
- 6.4.4 Infiltration trench
- 6.4.5 Rain Garden/bioretention
- 6.4.6 Dry well/seepage pit
- 6.4.7 Constructed filter
- 6.4.8 Vegetated swale
- 6.4.9 Vegetated Filter strip
- 6.4.10 Infiltration berm & retentive grading
- Volume Peak Rate Reduction BMPs
- Runoff Quality/Peak Rate BMPs
- Restoration BMPs
- Other BMPs and related Structural Measures
