In this time of rising temperatures, abundant rain and socioeconomic imbalance, this seminar will suggest that green roofs are a powerful green building Best Management Practices (BMPs). This presentation will outline the application, feasibility, benefits and challenges of green roofs in commercial application and put several widely debated questions into perspective: modular trays v. contiguous installations, upfront cost v. long-term investment, green roof v. other options, public access v. limited access, etc. Using local, national and international examples, she will explore green roof issues re: longevity, energy savings, stormwater management, maintenance, incentives and LEED points. The three learning objectives are a) to understand green roof ROI for commercial buildings, b) to compare stormwater strategies of green roofs v underground cisterns and porous pavers and c) to compare green roofs to a solar roof or a white reflective roof. Green roofs are a means to lowering the overall ambient temperature, reducing longterm costs on our buildings, sequestering CO2 and producing O2, improving the quality of life in our cities and boosting our green economy. Come learn more about green roofs at this seminar on May 7th.

1. A Green Roof Presentation: Why Consider a Green Roof ? specially prepared by Karen L. Weber for NEXUS Green Roundtable Spring 2009

4. Chinatrust Bank According to Chinese belief, the roof of a building belongs to the spirit world and acts as a landing platform for spirits to descend and ascend.

6. On a hot summer day, temperatures on a conventional roof can soar to 150ºF to 200ºF while a green roof remains between 77ºF to 90ºF.

8. Moos Water Filtration Plant Zurich, Switzerland This green roof was established as an earth roof in 1914 and was colonized by 175 plants along with 9 local orchids, several of which only exist here. Very little work has been done to maintain this 350,000 sf green roof. The substrate has 5 cm of sand and gravel and 15-20 cm of topsoil.

10. Energy Transfers SUMMER WINTER freezing

12. Marketing, Aesthetics, RE Value From Vancouver Convention Center to NYC Clinton Park

22. Solar Roofs

23. Energy Cooling properties of green roofs improve, while white roofs degrade over time and are affected by dust accumulation. White Reflective Roofs Skylights/Heliostats

25. Heliostats on Green Roof

28. World Trade Center, West Podium Park, Boston, MA

29. Boston World Trade Center, West Podium Park, 5” extensive podium green roof

30. Integrated Green Roof Technology

31. Modular Green Roof

32. Pre-Grown Mats

33. Sedum Cuttings

34. Sedum Plugs

35. Wal-Mart Store #5402 11 months

36. Wal-Mart Store #5402 Placing Pavers & Media Installing Drainage Layer

38. Wal-Mart Store #5402 Freshly Planted

39. Largest Green Roof Monitoring Program in World at Wal-Mart

40. Installing the Green Roof on WGBH

41. Green Roof/Solar Combination: Installing Green Roof on WGBH

42. Newly Planted Solar/Green Roof WGBH Headquarters, Boston, MA

45. Green Roof Design GREEN ROOF SYSTEMS

46. Green Roof Design GREEN ROOF SYSTEMS Vegetative Cover

47. Green Roof Design GREEN ROOF SYSTEMS Vegetative Cover Water Retention Drainage System

48. Green Roof Design GREEN ROOF SYSTEMS Vegetative Cover Water Retention Drainage System High Performance Waterproofing

50. Deck Hot Applied Rubberized Waterproofing

51. Polymer Modified Primer Hot Applied Rubberized Waterproofing

52. 790-11 EV Membrane Hot Applied Rubberized Waterproofing

53. Protection Course Hot Applied Rubberized Waterproofing

54. Insulation Hot Applied Rubberized Waterproofing

55. Root Barrier/Water Retention Hot Applied Rubberized Waterproofing

56. Filter Fabric Hot Applied Rubberized Waterproofing

57. Growing Medium, Plants and Wind Erosion Layer Hot Applied Rubberized Waterproofing

58. $ 6 .00 sq/ft $ 3.00 sq/ft $ 7 - 55 sq/ft Hot Applied Rubberized Waterproofing

60. Applying Hot Applied Rubberized Waterproofing

61. Seasonal High Water Table Bedrock Soil Horizon Vegetation Emulating Nature

62. Drain Sheets Mats

63. Dual Media

64. Mineral Drainage Layers Emulating Nature

67. Capillary Irrigation Method Drip Line Capillary Fabric

68. Capillary Irrigation Method

70. One-inch of water sustained by float valve Roots drink from the drainage zone Base Flood Irrigation Approach

71. Strategic Use of Basal Irrigation Techniques float controller boxes ponding riffles

72. ponding element bonded to protection sheet water surface separation fabric primary membrane Enhanced Water Retention Using Ponding Riffles

73. Ponding Riffles

74. Optigr ü n Trickle Irrigation Modules Trickle Irrigation Modules

75. Augmenting System Drainage

76. Internal Drainage

77. Wind-Stabilized Designs

78. Artificial Terrain Elements

80. Unit Paver System

86. Life Expression Wellness Center – Pennsylvania

89. Intensive: Oaklyn Branch Library

91. Intensive: Oaklyn Branch Library 14” irrigated green roof assembly

93. Oaklyn Library, Evansville, IN

97. The Four Seasons Hotel, Boston, MA Roofscapes, Inc.

98. Chicago City Hall Roofscapes, Inc. Chicago saves $4000-5000 per year on the City Hall energy bill since its roof was greened.

100. Notebaert Nature Museum (6.0” thick irrigated ) Veneer Wetlands

101. Mass General Healing Garden

104. Heinz Headquarters, Pennsylvania Roofscapes, Inc.

105. In our every deliberation we must consider the impact of our decisions on the next seven generations. -The Great Law of the Iroquois Confederacy

106. Green Roofs in Germany

107. Green Curves