CRCA Vegetative Roofing Panel From Field to Specs & Back. CRCA Trade Show & Seminars Drury Lane

CRCA Vegetative Roofing Panel From Field to Specs & Back CRCA Trade Show & Seminars Drury Lane - January 21, 2011

CRCA Vegetative Roofing Panel - From Field to Specs & Back Learning Objectives To understand Garden & Other Roofs - Slow water drainage - Save Energy Reflectivity, Insulation - Meet or Exceed Code Requirements - Technical Issues and why it s important.

CRCA Vegetative Roofing Panel - From Field to Specs & Back Panel Bill McHugh Chris Eichorn Kami Farahmandpour George Patterson Dave Wehrle

CRCA Vegetative Roofing Panel - From Field to Specs & Back Why Do Garden Roofs Make Sense for Chicago?

Why a Vegetative Roof? Reduces cooling loads Reduces peak energy demand Cool roofs being included into energy codes Can reduce ambient temperature in an urban setting (urban heat island - UHI) Improved air quality Further energy savings Andre Desjarlais, ORNL

CRCA Vegetative Roofing Panel - From Field to Specs & Back Chicago Energy Code URBAN HEAT ISLAND EFFECT Def. A microclimatic condition wherein large amounts of dark absorbing surfaces (such as asphalt paving and dark roofs) trap energy from sunlight and release it back into the atmosphere, causing higher ambient temperatures and higher pollution levels. Secondary Effect Garden Roofs for UHI = Slowed Water Runoff

CRCA Vegetative Roofing Panel - From Field to Specs & Back Why Garden Roofs? Chicago s Landscape.Water!! Flat, Marshy Land Heavy Clay Underbase, Glacial Lake Chicago Poor drainage Short, Sluggish Chicago / Calumet Rivers Human Alterations Shoreline Filled City Raised Reversed River Flow New Lagoons, Ponds, Harbors Suburbs = less drainage» Source: Encylopedia of Chicago

CRCA Vegetative Roofing Panel - From Field to Specs & Back Chicago s Water Drainage Solutions Water Flow Through 1 Meter of: Gravel 2 minutes Sand 2 Hours Silt - 200 Days Clay 200 Years» Source: Michigan Tech Permeability Study

CRCA Vegetative Roofing Panel - From Field to Specs & Back Chicago s Water Drainage History Flooding in Chicagoland 12 Biggies since 1849 1849, 1855, 1938, 1952, 1954, 1961, 1973, 1986, 1987, 1996, 2007, 2008. 2010? Most record setting crests set after 1948 Suburban Development. Drainage Project Solutions Illinois & Michigan Canal - 1848 Reverse Chicago River 1900 Sanitary & Ship Canal 1900 North Shore Channel 1910 Cal-Sag Channel 1922 Locks Chicago River 1938 TARP Deep Tunnel

CRCA Vegetative Roofing Panel - From Field to Specs & Back Chicago s Water Drainage Solutions Solutions?? Pourous Paving Systems Chicago s Alley Project Block L Pavers Sox Park Holds 600,000 Gals. In 100 year rains.» Source IL Sports Facilities Authority

CRCA Vegetative Roofing Panel - From Field to Specs & Back Chicago s Water Drainage Solutions Solutions? Water Retention on Roofs? Soils absorb 15-20% for 2-3 month period» Source: Environmental Design & Construction, May 1, 2003

CRCA Vegetative Roofing Panel - From Field to Specs & Back Chicago s Water Drainage Solutions Solutions?? Chicago s Garden Roofs Slow Drainage, Store Water on Roofs.a typical green roof with about 3 inches of growing media can be designed to reduce annual runoff by more than 50 percent. Drainage / Water Retention Boards».6 GAL/SF Water Held on Roof» Source: American Wick Drain Source, Website: CityofChicago.org

CRCA Vegetative Roofing Panel From Field to Specs & Back Garden Roof Varieties Veggie / Garden Roofs Definitions - NRCA Extensive Thin Semi-Intensive Kind of Thick Intensive Thick

CRCA Vegetative Roofing Panel From Field to Specs & Back Extensive < 6 Thick Overburden Plants May be Limited - Moisture Herbs Grasses Mosses Drought tolerant sedum Sustainable = shallow media Maintenance Required

CRCA Vegetative Roofing Panel From Field to Specs & Back Extensive < 6 Thick Overburden Advantages Lightweight Large, Low Sloped New & Existing Roofs Less Irrigation Less Expense Some Mass Effect Protects from UV some

CRCA Vegetative Roofing Panel From Field to Specs & Back Extensive < 6 Thick Overburden Pre-Vegetated Roofing Modules Thinner Minimal Irrigation 95% Fully Grown Looks Great NOW!

CRCA Vegetative Roofing Panel - From Field to Specs & Back Extensive - < 6 Thick Overburden Disadvantages Less Stormwater Capacity Limited Plant Choices Typically Not Occupied Outdoor Space Winter Appearance? Wind Resistance? How does it work,.

CRCA Vegetative Roofing Panel Delivery & Hoisting to Roof

CRCA Vegetative Roofing Panel Intensive & Semi Intensive Garden Roof >6 =12, Semi; 12+, Intensive Thick Systems Soil Media Drainage & Water Retention Boards Insulation Root Barrier & Roof Membrane

CRCA Vegetative Roofing Panel From Field to Specs & Back Thick Systems (& Semi) - Intensive > 6 Thick Systems Wide variety plantings: Species Maybe Trees, Shrubs Generally limited to flat roofs Require intense maintenance

CRCA Vegetative Roofing Panel From Field to Specs & Back Intensive > 6 Thick Systems Advantages Diverse Plants Most Mass Effect Peak demand later Max Stormwater Holding Capacity Roof Membrane Hidden from: UV Traffic Vandals Damage

CRCA Vegetative Roofing Panel - From Field to Specs & Back Semi & Intensive > 6 Thick Systems Disadvantages Weight Irrigation Needed Cost Investment Maintenance Roof Repair Accessibility S.E. for renovations

CRCA Vegetative Roofing Panel - From Field to Specs & Back Roof System Installation Critical to Success After Roof Membrane EFVM Chris Eichorn Later

CRCA Vegetative Roofing Panel - From Field to Specs & Back Intensive Garden Roof Installation Process Root Barrier

CRCA Vegetative Roofing Panel - From Field to Specs & Back Intensive Garden Roof Installation Process Insulation Suitable for Application

CRCA Vegetative Roofing Panel - From Field to Specs & Back Intensive Garden Roof Installation Process Drainage/Water Retention Boards Inside Urban Green Photo

CRCA Vegetative Roofing Panel - From Field to Specs & Back Intensive Garden Roof Installation Process Medium - Bulk Hoisting and Delivery

CRCA Vegetative Roofing Panel - From Field to Specs & Back Intensive Garden Roof Installation Process Medium Placement & Shaping

CRCA Vegetative Roofing Panel - From Field to Specs & Back Intensive Garden Roof Installation Process Plants, Pavers, Irrigation, Features

CRCA Vegetative Roofing Panel - From Field to Specs & Back Benefits of Vegetative Reduces Temperature of Chicago Slows Stormwater Runoff Therapuetic for building occupants

CRCA Vegetative Roofing Panel From Field to Specs & Back Vegetative Roof Spec Issues Technical Issues Insurance Required Warranty Licensing Specification Sections Codes Workforce Education & Safety Installed Cost

CRCA Vegetative Roofing Panel From Field to Specs & Back Vegetative Roof Spec Issues Technical Issues Wind Uplift Thickness; wind loads from Chapter 15, IBC Weight Distribution at placement Water Testing Serviceability it leaks, who digs? Placement Importance Cost if damaged, then covered

CRCA Vegetative Roofing Panel - From Field to Specs & Back Vegetative Roof Spec Issues Insurance Required General Liability Workers Compensation

CRCA Vegetative Roofing Panel From Field to Specs & Back Vegetative Roof Spec Issues Warranty Single Source Why? Who s responsible? Manufacturer Preferences Professional Roofing Contractor

CRCA Vegetative Roofing Panel - From Field to Specs & Back Vegetative Roof Spec Issues Licensing Illinois Dept. of Professional Regulation Roofers are licensed to protect the building owner and manager, building engineer

CRCA Vegetative Roofing Panel - From Field to Specs & Back Prevent Vegetative Roof Damage

CRCA Vegetative Roofing Panel - From Field to Specs & Back Vegetative Roof Spec Issues International Building Code Vegetative IBC Code Silent, 2003, 2006, 2009 2012 Codes Chapter 15 TITLE Roof Assemblies and Rooftop Structures Chapter 15, Building Code- S10 NASFM Increase roof covering one level above the level indicated in the table. Chapter 15 SCOPE.govern the design, materials, construction and quality of roof assemblies and rooftop structures. (WIND, ETC) Comply with the fire code. Mark Graham, later today

CRCA Vegetative Roofing Panel - From Field to Specs & Back Vegetative Roof Spec Issues International Building Code Vegetative IBC & IFC 2012 Fire Resistance = Low Sloped Roofs Immediate Removal of Dried Wind Resistance

CRCA Vegetative Roofing Panel - From Field to Specs & Back Vegetative Roof Spec Issues Specification Sections- MasterFormat 04 Division 7 07 55 00 Protected Membrane Roofing; Includes roofing assemblies with protective insulation and other surfacing materials, covering, membranes, applied directly to the structural substrate Alternative Terms, Abbreviations: vegetated, landscaped protected membrane roofing, green roof, sustainable design roof, alternate terms for Protected Membrane Roofing Division 7-07-55-63 Vegetative Roofing has it s own section!! Division 7 07 33 00 Natural Roof Coverings Sod, Thatched, Vegetated Roof Coverings Organic Special Roof Coverings Division 7, reference to Division 2 Plants, Irrigation Division 31 Definitions Specify Vegetative in Division 7. Roofer responsible for ALL, sub out if required. Piping, Mechanical Insulation

CRCA Vegetative Roofing Panel - From Field to Specs & Back Vegetative Roof Spec Issues Workforce Education Safety The right answer. Parapets, 40 above finished roof. Permanent Fall Protection Systems Classroom & Hands On Education Installed Cost & Efficiency Knowledge Working at Height Hoisting Placement with responsibility

CRCA Vegetative Roofing Panel - From Field to Specs & Back Vegetative Roof Spec Issues Installed Cost Roof Gardens It Depends Extensive - $7 - $20/sf Intensive - $25-50/sf?? Efficiency Competitive Experience

CRCA Vegetative Roofing Panel - From Field to Specs & Back Vegetative Roof Spec Issues Chicagoland Roofing Contractor Experience 3,000,000 plus SF Installed, (Most in last 2 years) Lowes Menards Target Allstate Jewel Osco Lutheran General Northwestern Memorial Hospital Chicago City Hall - 2001 Chicago Cultural Center Schwab Hospital The Mather FedEx O Hare More.

CRCA Vegetative Roofing Panel - From Field to Specs & Back Why Garden Roofs? Water Retention Saves Deep Tunnel Urban Heat Island Reduction Reduces City Temperature Reduced Energy Usage Isolates Roof Membrane Longer Lasting UV Foot Traffic Specs

CRCA Vegetative Roofing Panel - From Field to Specs & Back Why Chicago s Roofing Pro s?? IT s ABOUT THE ROOF! Roofing Contractor = Prime Contractor Manage Roof Construction Process Culture of Roofer Understands Working at Heights Safety Supervise trades on roof WC & GL Roofer Classification Over 2,000,000 SF Above Grade Water tight Roof that Doesn t Leak! Single Source Warranty

CRCA Vegetative Roofing Panel - From Field to Specs & Back Chris Eichorn, International Leak Detection

CRCA Vegetative Roofing Panel - From Field to Specs & Back Existing Vegetated Roof Systems.

Conductive Medium System + - Breach Vector-9 Conductor Wire Roof Membrane ProtectSys Measurement Grid Insulation Vapor Barrier Structural Deck

CRCA Vegetative Roofing Panel - From Field to Specs & Back Kami Farahmandpour, Building Technology Consultants, PC

Promises of Vegetative (Green) Roofs Upcoming code issues Pros..and some cons Financial aspects of vegetative roofs

Paragraph 406.7, Proposed 2012 IgCC

Promises of Vegetative (Green) Roofs Advertised Advantages Longer membrane service life Storm water retention Improved shading Improved thermal performance..? LEED points Environmental contributions

Promises of Vegetative (Green) Roofs Possible Disadvantages Membrane life is unknown Additional structural capacity is needed Leak detection is more difficult Quality Control/Assurance is far more critical While membrane maintenance may be less, higher level of vegetation maintenance is required

Promises of Vegetative (Green) Roofs Financial Aspects of Vegetative Roofs Roofing options: Extensive Vegetative Intensive Vegetative Conventional 2-Ply Modified General Assumptions Roof Area: 10,000 sf Evaluation Period: 100 years Projected Annual Inflation Rate: 3%

Promises of Vegetative (Green) Roofs Extensive Intensive Conventional

Promises of Vegetative (Green) Roofs Extensive Vegetative Roof Assumptions: Life Span: 35 years Installation Cost: $40/sf ($400,000) Annual Maintenance Costs: $0.40/sf ($4,000) First Year Maintenance Costs: $1.20/sf ($12,000) Additional Structural Costs: $2/sf ($20,000) One time only

Promises of Vegetative (Green) Roofs Intensive Vegetative Roof Assumptions: Life Span: 35 years Installation Cost: $55/sf ($550,000) Annual Maintenance Costs: $0.60/sf ($6,000) First Year Maintenance Costs: $1.20/sf ($12,000) Additional Structural Costs: $4/sf ($40,000) One time only

Promises of Vegetative (Green) Roofs Conventional 2-Ply Modified Roof Assumptions: Life Span: 20 years Installation Cost: $20/sf ($200,000) Annual Maintenance Costs: $0.40/sf ($4,000) First Year Maintenance Costs: $0.40/sf ($4,000) Additional Structural Costs: $0

Life Cycle Cost Analysis: 35 Year Lifespan for Vegetative Roofs General Information Projected Annual Inflation Rate 3.0% Life Span Period For Evaluation (years) 100 Roof Area (sf) 10,000 Input Roofing Options Extensive Intensive 2-Ply Vegetative Vegetative Modified Installation Cost (per sf) 40 55 20 Installation Cost $400,000 $550,000 $200,000 Likely Life of Product in years 35 35 20 Annual Energy Consumption (if applicable) Annual Maintenance Costs (per sf) $0.40 $0.60 $0.40 Annual Maintenance Costs $4,000 $6,000 $4,000 Additional 1st Year Maintenance Costs (per sf) $1.20 $1.20 $0.00 Additional 1st Year Maintenance Costs $12,000 $12,000 Additional Structural Cost (per sf) *(one time only) $2.00 $4.00 $0.00 Additional Structural Cost (per sf) *(one time only) $20,000 $40,000 Output Time Period For Evaluation (yrs) 100 100 100 1st re-install cost (inflation adjusted) $1,125,545 $1,547,624 $361,222 2nd re-install cost $2,714,682 $3,732,687 $652,408 3rd re-install cost $1,178,321 4th re-install cost $2,128,178 5th re-install cost Re-Installs over Evaluation Period 2.85 2.85 4.99 Time Period Subtotals Prorated and Inflated Costs of Re-Installation(s) $3,840,227 $5,280,312 $4,320,129 Life Span Energy Consumption (Inflated) Lifespan Additional 1st Year Maintenance Costs (Inflated) $691,871 $691,871 Life Span Maintenance Costs (Inflated) $2,429,151 $3,643,726 $2,429,151 Additional Strucutral Cost (Inflated) $384,373 $768,745 Total Cost Over the Life Span $7,745,621 $10,934,654 $6,949,279

Life Cycle Cost Analysis: 30 Year Lifespan for Vegetative Roofs General Information Projected Annual Inflation Rate 3.0% Life Span Period For Evaluation (years) 100 Roof Area (sf) 10,000 Input Roofing Options Extensive Intensive 2-Ply Vegetative Vegetative Modified Installation Cost (per sf) $40 $55 $20 Initial Installation Cost $400,000 $550,000 $200,000 Likely Life of Product in years $30 $30 $20 Annual Energy Consumption (if applicable) Annual Maintenance Costs (per sf) $0.40 $0.60 $0.40 Annual Maintenance Costs $4,000 $6,000 $4,000 Additional 1st Year Maintenance Costs (per sf) $1.20 $1.20 $0.00 Additional 1st Year Maintenance Costs $12,000 $12,000 Additional Structural Cost (per sf) *(one time only) $2.00 $4.00 $0.00 Additional Structural Cost (per sf) *(one time only) $20,000 $40,000 Output Time Period For Evaluation (yrs) 100 100 100 1st re-install cost (inflation adjusted) $970,905 $1,334,994 $361,222 2nd re-install cost $2,356,641 $3,240,382 $652,408 3rd re-install cost $1,906,729 $2,621,752 $1,178,321 4th re-install cost $2,128,178 5th re-install cost Re-Installs over Evaluation Period 3.32 3.32 4.99 Time Period Subtotals Prorated and Inflated Costs of Re-Installation(s) $5,234,275 $7,197,128 $4,320,129 Life Span Energy Consumption (Inflated) Lifespan Additional 1st Year Maintenance Costs (Inflated) $922,494 $922,494 Life Span Maintenance Costs (Inflated) $2,429,151 $3,643,726 $2,429,151 Additional Structural Cost (Inflated) $384,373 $768,745 Total Cost Over the Life Span $9,370,293 $13,082,094 $6,949,279

Promises of Vegetative (Green) Roofs Total Cost Over Evaluation Period (35- year life span for vegetative roof) Extensive Vegetative Roof: $7,514,998 Intensive Vegetative Roof: $10,588,719 Conventional 2-Ply Modified Roof: $6,949,279

Promises of Vegetative (Green) Roofs Total Cost Over Evaluation Period (30- year life span of vegetative roofs) Extensive Vegetative Roof: $9,062,795 Intensive Vegetative Roof: $12,620,847 Conventional 2-Ply Modified Roof: $6,949,279

CRCA Vegetative Roofing Panel - From Field to Specs & Back Bill McHugh, CRCA Executive Director

CRCA Vegetative Roofing Panel - From Field to Specs & Back Why Garden Roofs? Chicago s Landscape.Water Flat, Marshy Land Heavy Clay Underbase, Glacial Lake Chicago Poor River drainage Short, Sluggish Chicago / Calumet Rivers Human Alterations Shoreline Filled City Raised Reversed River Flow New Lagoons, Ponds, Harbors Suburbs = less drainage» Source: Encylopedia of Chicago

CRCA Vegetative Roofing Panel From Field to Specs & Back Intensive > 6 Thick Systems Advantages Diverse Plants Most Mass Effect Peak demand later Max. Stormwater Holding Capacity Roof Membrane Hidden from: UV Traffic Vandals Damage

CRCA Vegetative Roofing Panel - From Field to Specs & Back Panel Bill McHugh Chris Eichorn Kami Farahmandpour George Patterson Dave Wehrle

CRCA Vegetative Roofing Panel - From Field to Specs & Back Solution 10+ Years, CRCA & Vegetative

CRCA Vegetative Roofing Panel - From Field to Specs & Back CRCA Trade Show & Seminars Drury Lane - January 21, 2011

CRCA Vegetative Roofing Panel From Field to Specs & Back. CRCA Trade Show & Seminars Drury Lane - January 21, 2011