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Residential Green Building Rating Systems

Residential Green Building Rating Systems. Learning objectives:. Session 1 Become familiar with the tools, documents and materials you will need to certify a home (or multifamily project) Understand how to register a project and what the costs are

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Residential Green Building Rating Systems

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  1. Residential Green Building Rating Systems

  2. Learning objectives: • Session 1 • Become familiar with the tools, documents and materials you will need to certify a home (or multifamily project) • Understand how to register a project and what the costs are • Understand the criteria and documentation requirements for site selection and location credits • Next sessions will focus on other credit areas

  3. State of Market

  4. http://greenworksrealty.com/e-cert_report/e-cert_report.php?t=e-cert_reporthttp://greenworksrealty.com/e-cert_report/e-cert_report.php?t=e-cert_report

  5. Terms and Players • Rating System – the official rules • Checklist – the score chard • Project Team – the architect, designer, builder, homeowner, etc. • plan, design and build the home • Determine the green measures to be incorporated into the home • Fill out and maintain the checklist • Provide supporting materials for verification

  6. Terms and Players • Green Rater, plan review and field verification • Energy Rater, plan review, energy modeling, field verification • HERS = Home Energy Rating Score • Administered by RESNET • Used by EPA for Energy Star Home

  7. Terms and Players • Performance path = Testing or modeling • Energy using HERS, irrigation use • Prescriptive path – select from available credits • HSA - Home Size Adjuster, gsf and # of bedrooms • ID requests – Innovation and Design Requests • CIRs – Credit Interpretation Request

  8. Mini-Quiz • Who’s job is it to fill out the checklist? Project Team • Who’s job is it to verify the installed green measures? Green Rater

  9. Rating Systems • Regional Residential Green Building System • LEED for Homes • ANSI/ICC 700 administered by NAHB • EPA Energy Star for Homes (HERS of 85 + other criteria) • DOE Builders Challenge (HERS of 70 + other criteria) • Environments for living – MASCO • Passive Haus • Living Building Challenge • Third party standards • HERS: Home Energy Rating Score by RESNET • Water Sense: New EPA standard like energy star • Industry standards • Insulation installation – TBC (Thermal Bypass Inspection part of HERS rating) • Manual J and Manual D for proper HVAC sizing

  10. Regional Pima County Development Services – Initial Development Management by a team of: Development Services of Adopting Jurisdictions SAHBA TEP SW Gas Service delivered by Adopting Development Services LEED US Green Building Council (USGBC) developed the program Providers manage the program and hire/contract with USGBC certified Green Raters Green Raters work with project teams to verify projects Pima County providership is unique Who Manages the Systems? • NAHB: ANSI committee developed the standard • NAHB Manages the program • NAHB Accredited Verifier verifies projects

  11. Overview of the Regional System • Regional Residential Green Building Rating System • Regional Residential Green Remodeling Rating System • Rating System Manual = “the Rules” • Checklist = “score card” • Competition for new name

  12. OMG!!!

  13. How to Set Macro Security

  14. Regional Checklist

  15. Regional Checklist

  16. Regional Energy Multiple Paths • Performance Path, or • Energy Program Path – 3 Options • Energy Star for Homes • TEP Guaranteed Home Program • EPAct Home Certification ($2,000 tax credit to Builders), or • Prescriptive Path • Menu of Individual Measures

  17. Regional Mandatory Reqs • NPPO • Control and direct runoff; Stabilize slopes • Energy Performance path: • IECC (Includes Manual J and Manual D) • HERS, or Energy Prescriptive path: • Manual J and Manual D • Seal Duct Work • Energy Star programmable T-stat • Energy Star bathroom fans • Energy Star Windows and Skylights • Seal off duct work during construction • Other energy mandatory measures depending on path • Impervious drives and walks limited in area • No concrete washout onto soil

  18. Overview of LEED for Homes • LEED for Homes Rating System • On line download • LEED for Homes Reference Guide = “the Rules” • Errata Documents • LEED for Homes Project Checklist = “score card” • Verification and Submittal Guidelines • From Provider • REGREEN Residential Remodeling Program

  19. LEED Tabs: Summary

  20. LEED Checklist

  21. LEED Accountability Form

  22. LEED Verification Checklist

  23. ID 2 Durability Planning and Management Nonpaper-faced backer board Water resistant flooring at kitchen, bath, laundry and entry Water heater drain pan Clothes washer drain pan or single throw valve SS 1.1 Erosion Control SS 2.1 No Invasive Plants EA 1 Energy Star for Homes performance HERS Rating = 85 or better, or use the prescriptive pathway and: EA 2.1 R-value of IECC and HERS grade II insulation EA 3.1 Air leakage blower door test EA 4.1 Good Windows – Energy Star for homes requirements EA 5.1 Duct leakage test EA 6.1 Good HVAC Design (ACCA Manual J, 8th edition) EA 8.1 Energy Star lights EA 5.1 (b) Do not use wall cavity ducts EA 11.1 Refrigerant Charge Test MR 1.1Framing Order Waste Factor =10% MR 2.1 Notice of preference for FSC wood and Only use tropical FSC wood MR 3.1 Construction Waste Management planning and documentation EQ 2.1 Basic Combustion Venting EQ 4.1 Basic Outdoor Air Ventilation EQ 5.1 Basic Local Exhaust EQ 6.1 Room-by-room HVAC load calculations (ACCA Manual J and D, 8th edition) EQ 7.1 Good filters MERV 8 EQ 10.1 No HVAC in garage AE 1.1 Basic Operations Training LEED Prereqs

  24. NAHB • ANSI/ICC 700 • Online Scoring tool • Essential to use

  25. Credit Metric Not in Manual

  26. NAHB Screenshot of standard

  27. NAHB Screenshots of web site

  28. NAHB Screenshots of web site

  29. NAHB Screenshots of web site

  30. NAHB Screenshots of web site

  31. Most mandatory elements start out, “Where required by the ICC IRC or IBC…” Eave Ice Barrier Manual J Building Cavities can not be duct work Fully seal openings to unconditioned space Seal windows to form an air barrier Rim Joist Insulation Sill plate sealer Skylight shafts insulation Don’t disrupt code required insulation at architectural features Attic access insulation Recessed fixtures IC – airtight Eave vent baffles Windows are energy star minimum Garage Door tightly sealed and gasketed Air barrier between garage and living space Sheathing for floor, wall and/or roof is Exposure 1 Wall to wall carpeting is not installed adjacent to water closets Ducts outside of thermal envelope minimum R-6 Building Owners Manual NAHB Mandatory

  32. The Crosswalk

  33. Points = Points • Points to Achieve Certification:

  34. Mini-Quiz • How do you find out what the credit means? First to the Rating System – read the documentation Then…ask your green rater And if they don’t know….

  35. Credit Interpretation Requests • CIRs – Formal requests to interpret the rating system • USGBC will start charging for CIRs this year • Regional via the management committee • NAHB?

  36. Eligibility Requirements

  37. Process Outline

  38. Process Outline

  39. Costs • Learning curve • Registration = $0 • Verification = $0 • (part of code inspections) • HERS provided by utility = $0 • ($600 to $1600) • Certification = $0 • All in = $0 • Learning curve • Registration =$150/225 • Verification = $1424 • (By Pima County) • HERS provided by utility = $0 • ($600 to $1600) • Certification = $225/300 • All in = $1,949 • Learning curve • Registration =$0 • Verification = $500 +/- 1 • (By NAHB Verifier) • HERS provided by utility = $0 • ($600 to $1600) • Certification = $200/500 • All in = $1,000 1: Approx per Hank Kryzick 1/25/10

  40. Costs http://www.nahbgreen.org/Content/pdf/GreenHomeRatingComparison.pdf http://www.nahbgreen.org/Content/pdf/GreenHomeRatingComparison.pdf • Green Building is Better Building, and • Better Building is More Expensive • Green building is an investment, not a costhttp://www.greenbuildingadvisor.com/blogs/dept/design-matters/does-green-building-cost-more • What about Integrated Planning…?

  41. http://greenworksrealty.com/e-cert_report/e-cert_report.php?t=e-cert_reporthttp://greenworksrealty.com/e-cert_report/e-cert_report.php?t=e-cert_report

  42. Diving into the Details HSA…Home Size Adjuster LEED Specific Integrated Design Durability Management Prereq Site Location Credits in Regional LEED NAHB

  43. Exercise: fill out a checklist Divide into two groups One group fill out the Regional Checklist The other group fill out the LEED for Homes checklist Your goal is silver certification 15 minutes

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