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Green point rated and green materials


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Green point rated and green materials

  1. 1. GreenPoint Rated and Green Materials Katy Hollbacher, P.E. | May 16, 2009
  2. 2. Today’s Presentation: <ul><li>Considering individual choices in context of the project as a whole </li></ul><ul><li>Verification & testing: choosing a green material is not enough! </li></ul><ul><li>Example material-related measures in GreenPoint Rated </li></ul>
  3. 3. Who Is Build It Green? <ul><li>Drive policy development — partner with government to establish credible and accessible green building policies that promote private sector innovation and provide consistent guidelines statewide. </li></ul><ul><li>Increase supply of green homes —train building professionals on latest best practices and connect green product suppliers with consumers. </li></ul><ul><li>Stimulate consumer demand —build awareness of the benefits of green building by providing GreenPoint Rated as a trustworthy, recognized brand for green homes. </li></ul>Mission is to promote healthy, energy- and resource-efficient buildings in California.
  4. 4. What Is Green Building? <ul><li>“ Whole-Systems” approach for designing and constructing buildings that: </li></ul><ul><ul><li>are integrated into the building site </li></ul></ul><ul><ul><li>consume less energy and water </li></ul></ul><ul><ul><li>are durable and easier to maintain </li></ul></ul><ul><ul><li>use resource efficient techniques and materials </li></ul></ul><ul><ul><li>are healthier, safer, and more comfortable </li></ul></ul><ul><li>Green=SMART </li></ul>
  5. 5. Traditional vs. Green Approach <ul><li>Traditional: how much more does it cost to install a 92% instead of 80% AFUE furnace? </li></ul><ul><li>Greener: how much more does it cost to operate and maintain an 80% instead of 92% AFUE furnace over 20 years? </li></ul><ul><ul><li>Think lifecycle cost, not upfront cost </li></ul></ul><ul><ul><li>Think value , not cost </li></ul></ul>
  6. 6. The Whole-Systems Approach <ul><li>What is a ‘truly green’ heating system? </li></ul><ul><ul><li>Insulation is installed properly, and levels exceed code </li></ul></ul><ul><ul><li>Air sealing techniques minimize heat loss at doors, elec. outlets, attic hatches, etc… </li></ul></ul><ul><ul><li>Windows are dual-pane and low-E </li></ul></ul><ul><ul><li>Ductwork and furnace have been sized and designed with appropriate manuals </li></ul></ul><ul><ul><li>System has been tested for proper performance </li></ul></ul><ul><ul><li>Furnace is properly maintained over its lifetime… </li></ul></ul>
  7. 7. Step 1: Conserve Resources <ul><li>Use materials resourcefully </li></ul><ul><ul><li>Efficient design </li></ul></ul><ul><ul><li>Smart construction </li></ul></ul><ul><ul><li>Waste management/recycling </li></ul></ul><ul><li>Always ask: What is the highest and best use of a product? </li></ul><ul><ul><li>Good: Downcycle </li></ul></ul><ul><ul><li>Better: Recycle (salvage and reuse) </li></ul></ul><ul><ul><li>Best: Refinish or refurbish </li></ul></ul>
  8. 8. Step 2: Choose Materials <ul><li>Recycled content </li></ul><ul><li>Salvaged or reused </li></ul><ul><li>Rapidly renewable </li></ul><ul><li>Sustainably harvested </li></ul><ul><li>Resourceful </li></ul><ul><li>Safe and healthy </li></ul><ul><li>Lifecycle considerations: </li></ul><ul><ul><li>Locally sourced or manufactured </li></ul></ul><ul><ul><li>Durable/low-maintenance </li></ul></ul><ul><ul><li>Recyclable or biodegradable </li></ul></ul><ul><ul><li>Associated energy & water use </li></ul></ul>
  9. 9. Beyond Product and Material Selection… <ul><li>Defining a product as “green” is not straightforward </li></ul><ul><li>A product is often just one component of a larger system </li></ul><ul><li>Rarely is there a ‘greenest’ choice; depends on specific situation </li></ul><ul><li>“ Green Products” can be used in dumb ways! </li></ul><ul><li>What Makes a Product Green? </li></ul>
  10. 10. Think Big Picture. Think Critically. Use Common Sense!
  11. 11. Making Green Building Happen: Communication and Coordination Green Building Building Department Product Supplier Subs/ Specialty Trades General Contractor Owner Architect/ Designer
  12. 12. How to collaborate? <ul><li>Identify project goals. </li></ul><ul><li>Assemble quality team—and educate them. </li></ul><ul><li>Identify and assign “gray area” roles. WHO is accountable for WHAT? </li></ul><ul><li>Who needs to be consulted when? </li></ul><ul><li>How will accountability by measured or verified? </li></ul>
  13. 13. Educate and Make the Team Accountable <ul><li>“ All trades are to become familiar with the GreenPoint Rated checklist and provide all documentation to the owner or Architect to complete the checklist.” </li></ul>
  14. 14. Specify
  15. 15. Verify
  16. 16. Why Green Rating Systems? <ul><li>Verify and quantify environmental benefits </li></ul><ul><li>Achieve energy, water, resource, and carbon-reduction goals </li></ul><ul><li>Empower consumers </li></ul><ul><li>Provide competitive </li></ul><ul><li>advantage for builders </li></ul><ul><li>Create green building market value for products, homes & services </li></ul>
  17. 17. <ul><li>A program of Build It Green </li></ul><ul><li>California based & stakeholder grown </li></ul><ul><li>Accessible yet credible </li></ul>Single Family Multifamily
  18. 18. GreenPoint Rated Certificate
  19. 19. Minimum Requirements <ul><li>Minimum Points – 50 </li></ul><ul><li>Categories – 5 </li></ul><ul><ul><li>Minimum thresholds in 4 SF </li></ul></ul><ul><ul><li>Minimum thresholds in 5 MF </li></ul></ul><ul><li>Prerequisites – up to 4 </li></ul><ul><ul><li>Perform 15% above T-24 </li></ul></ul><ul><ul><li>50% Waste Diversion by Weight (Recycling or Reuse) </li></ul></ul><ul><ul><li>GreenPoint Rated Checklist in Blueprints </li></ul></ul><ul><ul><li>3-Yr. Warranty for Shingle Roofs on Multifamily Projects </li></ul></ul>Category Min Points Max Points Community 0 31 Energy 30 194 IAQ/Health 5 51 Resources 6 103 Water 9 69 Totals 50 448
  20. 20. Why LEED Homes & GreenPoint Rated? <ul><li>Provide complementary opportunities to California builders: </li></ul><ul><ul><li>GreenPoint Rated--credible yet accessible point of entry </li></ul></ul><ul><ul><li>LEED for Homes--national environmental leadership award for top-performing new homes </li></ul></ul>California Code GreenPoint Rated LEED Homes
  21. 21. Collaboration: Memorandum of Understanding <ul><li>Cross-training of GreenPoint Raters and LEED for Homes Raters and Representatives </li></ul><ul><li>Dual branding with equivalency tool </li></ul><ul><li>Cross-referrals to steer projects towards the most appropriate rating system </li></ul>
  22. 22. The GreenPoint Rated Process <ul><li>Build It Green </li></ul><ul><li>Manages program </li></ul><ul><li>Trains and certifies the raters </li></ul><ul><li>Provides quality assurance of raters </li></ul><ul><li>Issues certificates to builders </li></ul><ul><li>GreenPoint Rater </li></ul><ul><li>Coordinates with Build It Green </li></ul><ul><li>Provides rating and verification </li></ul>
  23. 23. Who are GreenPoint Raters? <ul><li>Certified by Build It Green; no contractual relationship </li></ul><ul><li>Prior building industry & green building experience required </li></ul><ul><li>Raters receive 3.5 day training </li></ul><ul><li>Written & field exams </li></ul><ul><li>Ongoing certification requirements </li></ul>
  24. 24. GreenPoint Checklists <ul><li>Accompany guidelines and provide a tool to track green features of a project </li></ul><ul><li>Define specific metrics for achieving green building measures </li></ul><ul><li>Uses: </li></ul><ul><ul><li>Do-it-yourself assessment </li></ul></ul><ul><ul><li>Communication tool for project team </li></ul></ul><ul><ul><li>Policy tool for municipality and builder </li></ul></ul><ul><ul><li>Basis for third-party verified projects </li></ul></ul>
  25. 25. Verification Methods <ul><li>Four ways to verify each measure: </li></ul><ul><li>Rater Manual defines the recommended methods </li></ul><ul><li>Balance between rigor and excessive burden </li></ul>Plan Review Rough Inspection Final Inspection Documentation
  26. 26. Material-related GPR measures <ul><li>How do specific materials help earn points in GreenPoint Rated? </li></ul><ul><ul><li>Are environmentally preferable </li></ul></ul><ul><ul><li>Improve durability or reduce maintenance requirements (eg overhangs) </li></ul></ul><ul><ul><li>Contribute to energy or water efficiency </li></ul></ul><ul><ul><li>Improve air quality (eg hard surfaces in entryways) </li></ul></ul><ul><ul><li>Are part of a resource-efficient system… or not used at all! </li></ul></ul>
  27. 27. Site <ul><li>Deconstruct Instead of Demolishing Existing Buildings on Site </li></ul>SF MF SF MF A2
  28. 28. Foundation <ul><li>Displace Portland Cement in Concrete with Recycled Flyash or Slag </li></ul><ul><ul><li>a. 20% b. 25% (MF 30%) </li></ul></ul>SF MF SF MF C2 B1
  29. 29. Foundation <ul><li>Use Frost-Protected Shallow Foundation in Cold Areas (C.E.C. Climate Zone 16) </li></ul>SF MF SF B2
  30. 30. Structure <ul><li>Optimal Value Engineering (Advanced Framing) </li></ul><ul><ul><li>a. Place Rafters & Studs at 24-Inch On Center </li></ul></ul>SF MF SF C5 D1
  31. 31. Structure <ul><li>Optimal Value Engineering (Advanced Framing) </li></ul><ul><ul><li>b. Size Door AND Window Headers for Load </li></ul></ul>SF MF SF C5 D1 Yes No
  32. 32. Structure <ul><li>Engineered Structural Elements </li></ul><ul><ul><li>b. Insulated Engineered Headers </li></ul></ul>SF MF SF D2
  33. 33. Quiz: Structure <ul><li>b. Size Door and Window Headers for Load? </li></ul>SF MF SF C5 D1 NO
  34. 34. Structure <ul><li>Optimal Value Engineering (Advanced Framing) </li></ul><ul><ul><li>c. Use Only Jack and Cripple Studs Required for Load </li></ul></ul>SF MF SF C5 D1 NO Yes! NO
  35. 35. Structure SF MF SF MF C4 D2 <ul><li>Engineered Structural Elements </li></ul><ul><ul><li>c. Wood I-Joists or Web Trusses for Floors </li></ul></ul>
  36. 36. Structure <ul><li>FSC Certified Wood </li></ul>SF MF SF MF PD3,4 D3 C3
  37. 37. Structure <ul><li>Design Energy Heels on Roof Trusses (75% of attic insulation height at outer edge of ext. wall) </li></ul>MF MF C8 D6 SF
  38. 38. Structure <ul><li>Install Overhangs and Gutters (16” & 24”) </li></ul>SF SF MF D10 Manual: Measured horiz. from finish siding to end of fascia, not gutter Must be on all sides of roof, not just eaves
  39. 39. Exterior Finish <ul><li>Install a Rain Screen Wall System </li></ul>SF MF SF MF C11 E2 Manual: A 3/8” min air space (spacer strips or rain screen mat) that allows for effective ventilation
  40. 40. Exterior Finish <ul><li>Select Durable and Fire-Resistant Roofing Materials </li></ul>SF MF SF MF C10 E4 <ul><li>Manual: </li></ul><ul><li>Class A assembly (SF/MF) </li></ul><ul><li>3 yr subcontractor installation guarantee & 20 yr mfr warranty (req’d in MF) </li></ul>
  41. 41. Finishes <ul><li>Vandalism Deterrence </li></ul><ul><ul><li>E.13 Project Includes Vandalism Resistant Finishes and Strategies </li></ul></ul><ul><ul><li>F.5 Vandalism Management Plan </li></ul></ul>SF MF SF MF E13, F5
  42. 42. Insulation <ul><li>Install Insulation with 75% Recycled Content </li></ul><ul><ul><li>Note: post-industrial OK </li></ul></ul>SF MF SF MF C9 F1 Field: ONLY cellulose, cotton, rockwool meet this
  43. 43. Insulation SF MF SF M F3 <ul><li>Pre-Drywall Inspection Shows Quality Insulation Installation </li></ul><ul><ul><li>Note: HERS verification req’d </li></ul></ul>
  44. 44. Holes everywhere…
  45. 45. Caulking and Sealing <ul><li>Air sealing </li></ul><ul><ul><li>Increase comfort and reduce energy bills </li></ul></ul><ul><ul><li>25% or more of heat loss from homes is due to air infiltration </li></ul></ul><ul><li>Rated vs. Actual R-Value </li></ul><ul><ul><li>Air infiltration can reduce a wall's rated insulative value from R-13 to an effective value of R-5 </li></ul></ul><ul><li>Tax credits up to $1500 </li></ul>
  46. 46. Building Performance <ul><li>Home obtains EPA Indoor Air PLUS Certification </li></ul><ul><ul><li>Home must be ENERGY STAR rated </li></ul></ul><ul><ul><li>Same HERS Rater does the IAP </li></ul></ul><ul><ul><li>Pilot phase is just ending </li></ul></ul>SF MF SF J3
  47. 47. Building Performance <ul><li>Home obtains EPA Indoor Air PLUS Certification </li></ul><ul><ul><li>No extra IAP fees over regular fees at this time </li></ul></ul>SF MF SF J3 + Materials Moisture Control + Pest Barriers + Combustion Systems + HVAC Systems + Radon Control +
  48. 48. EPA Indoor Air PLUS <ul><li>“ Specifications were developed based on best available science and information about risks associated with indoor air quality problems, and balanced with practical issues of cost, builder production process compatibility, and enforceability” </li></ul><ul><ul><li> </li></ul></ul>
  49. 49. Finish Measures <ul><li>Paints, sealants, adhesives </li></ul><ul><li>Cabinetry & furnishings </li></ul><ul><li>Flooring </li></ul><ul><li>Appliances </li></ul><ul><ul><li>Invoices, MSDS, cut sheets as documentation </li></ul></ul><ul><ul><li>Watch for switch-outs during construction (but it’s in the specs!) </li></ul></ul>
  50. 50. Finishes <ul><li>Design Entryways to Reduce Contaminants </li></ul><ul><ul><li>SF/MF - Provide Hard Surface & Permanently Installed Shoe Storage System at Home Entrances </li></ul></ul><ul><ul><li>MF - Permanent Walk-Off Systems are Provided at All Main Entrances & in Common Areas </li></ul></ul>SF MF SF MF E2 K1 Manual: Built-in cubby or shelf is req’d, bench isn’t
  51. 51. Finishes <ul><li>Use Low/No-VOC Paint </li></ul>Field: Documentation is key. Finding cans in field is often difficult and not necessarily indicative of which paint was applied where.
  52. 52. Finishes <ul><li>Use Environmentally Preferable Materials for Interior Finish </li></ul><ul><ul><li>A) FSC Certified Wood, B) Reclaimed, C) Rapidly Renewable D) Recycled-Content or E) Finger-Jointed or Local </li></ul></ul>SF MF SF MF E7 K6 PK1
  53. 53. Appliances <ul><li>Install a Built-in </li></ul><ul><ul><li>a. Recycling Center </li></ul></ul><ul><ul><li>b. Compost Center </li></ul></ul>MF MF E3 M4 SF
  54. 54. Community Design <ul><li>Cluster Homes / Keep Size in Check </li></ul><ul><ul><li>c. Home Size Efficiency </li></ul></ul>SF SF MF O2 O2
  55. 55. The Not So Big House <ul><li>Since 1949, the square footage of housing per person has jumped by 3.6 times from 214 to 769 in the U.S.! </li></ul><ul><li>Sarah Susanka, </li></ul><ul><li>Typically calls for building one-third less in square footage than homeowners think they need </li></ul>“ McMansion”
  56. 56. Market Trends: Small Is In? <ul><li>Living small: Defying trend, some homeowners make more of less square footage </li></ul><ul><ul><li> </li></ul></ul><ul><li>2009 Forecast: Smaller Single-family Home Trend Will Continue </li></ul><ul><ul><li> </li></ul></ul>
  57. 57. Homework? <ul><li>Ask an architect or builder friend if you can review a few old sets of plans </li></ul><ul><li>Practical exercise: </li></ul><ul><ul><li>Review plans with a critical eye regarding material use </li></ul></ul><ul><ul><li>How is this project doing a good job? </li></ul></ul><ul><ul><li>What can be improved? </li></ul></ul><ul><ul><li>Where do you require more info to make an honest assessment? </li></ul></ul>
  58. 58. Questions…