This document discusses green roofs, which are engineered lightweight roofing systems that support plant life installed on top of structures. Green roofs provide benefits like reducing stormwater runoff, mitigating the urban heat island effect, and improving air quality. There are two main types - intensive green roofs which are like roof top gardens with thick growth media and vegetation but higher costs, and extensive green roofs which are thinner and lighter like sod roofs and have lower costs and maintenance needs. Installing a successful green roof requires a team approach involving various professionals.

1. GREEN ROOFS
In San Diego’s Arid Climate
“Improving California’s Environment One
Roof At A Time”

2. “ We do not inherit the earth from our ancestors,
we borrow it from our children”

10. • Living roof
• Vegetated roof
• Eco roof
• Brown roof
(spontaneously seeded)

12. • An engineered, lightweight roofing system that supports
plants ( NOT PLANTER BOXES )
• On top of a man made structure
• Below, at or above grade
• Up to 40% slope
• Every one is different!

13. Hanging Gardens of Babylon

14. Egyptians, Romans, and Vikings

16. Benefits of Green Roof
• Stormwater
• Urban Heat Island
Effect
• Improves Air
Quality
• Biodiversity
• Visual Appeal
• Reduces Landfill

28. • Think “roof top garden”
• 6” or more growth media
• Virtually any variety of plant
• Higher cost
• Higher weight
• Higher maintenance
• Full access

33. • Think “sod” roof
• Less than 6” of growth media
• Less plant variety
• Less expensive
(as low as $8/sq ft)
• Light weight
• Limited access
• Could be modular
• Low maintenance

53. TEAM APPROACH
 Client
 Green roof Consultant
 Engineer
 Architect
 Roofer
 Horticulturist
 Landscape Architect

54. Robert Thiele, AIA, LEED Ulf Waldmann
AP General Manager
Principal Mission Valley Roofing
Robert Thiele Associates
Roofing Contractor
Architect