Stretch Code Informational Session February 16, 2011

Topics Introductions Introductions IECC 2009 Overview IECC 2009 Overview What is the Stretch Code? What is the Stretch Code? Discussion and Q&A Discussion and Q&A 2

Energy Codes in MA are changing New base energy code in July 2010 (IECC 2009) New base energy code in July 2010 (IECC 2009) Roughly 10-15% more efficient Roughly 10-15% more efficient Towns and Cities can opt into Towns and Cities can opt into the “Stretch Code” appendix the “Stretch Code” appendix Approx 15-20% more energy Approx 15-20% more energy efficient than IECC 2009 or ASHRAE Commercial bldgs. ASHRAE remains Commercial bldgs. ASHRAE remains ASHRAE 90.1 = Energy Standard for Buildings Except Low-Rise Residential Buildings

The wonderful world of Acronyms ASHRAE American Society of Heating, Refrigeration and Air-Conditioning Engineers ICCInternational Codes Council IECC International Energy Conservation Code DOER Department of Energy Resources HERS Home Energy Rating System

IECC and ASHRAE Codes ICC & ASHRAE develop model building codes and standards for the US. ICC & ASHRAE develop model building codes and standards for the US. ICC: publishes IECC energy code ICC: publishes IECC energy code 3 year cycle IECC 2006, IECC year cycle IECC 2006, IECC 2009 ASHRAE: publishes 90.1 standard ASHRAE: publishes 90.1 standard 3 year cycle , year cycle , ASHRAE = American Society of Heating, Refrigerating and Air-Conditioning EngineersAmerican Society of Heating, Refrigerating and Air-Conditioning Engineers IECC = International Energy Conservation Code – of International Codes Council (ICC)International Energy Conservation Code International Codes Council 5

IECC 2009

7 Structure of the IECC Chapter 1Administrative Chapter 1Administrative Chapter 2Definitions Chapter 2Definitions Chapter 3Climate Zones Chapter 3Climate Zones Chapter 4Residential Energy Efficiency Chapter 4Residential Energy Efficiency Chapter 5Commercial Energy Efficiency Chapter 5Commercial Energy Efficiency Chapter 6 Referenced Standards Chapter 6 Referenced Standards

IECC 2009 and the MA 8 th Edition IECC addresses only energy IECC addresses only energy MA 8 th Edition will address all codes (structural, plumbing, etc.) MA 8 th Edition will address all codes (structural, plumbing, etc.) Uses IECC to address energy Uses IECC to address energy IECC addresses both residential and commercial IECC addresses both residential and commercial MA 8 th Edition through IECC 2009, requires compliance in Climate Zone 5 MA 8 th Edition through IECC 2009, requires compliance in Climate Zone 5

Climate Zones – 2009 IECC

What’s Changed Since IECC 2006? New requirements New requirements Building envelope tightness Building envelope tightness Duct testing Duct testing Lighting equipment Lighting equipment Pool controls and covers Pool controls and covers Snow melt controls Snow melt controls No moisture control requirements (framed walls, floors and ceilings) No moisture control requirements (framed walls, floors and ceilings)

IECC 2009 Additions, Alterations, Renovations and Repairs Conform as relates to new construction Conform as relates to new construction Unaltered portion (s) do not need to comply Unaltered portion (s) do not need to comply Additions can comply alone or in combination with existing building Additions can comply alone or in combination with existing building Exceptions Exceptions Storm windows over existing fenestration Storm windows over existing fenestration Glass only replacements Glass only replacements Exposed, existing ceiling, wall or floor cavities if already filled with insulation Exposed, existing ceiling, wall or floor cavities if already filled with insulation Where existing roof, wall or floor cavity isn’t exposed Where existing roof, wall or floor cavity isn’t exposed Re-roofing for roofs where neither sheathing nor insulation exposed. Roofs without insulation in the cavity and where the sheathing or insulation is exposed during re-roofing shall be insulated either above or below the sheathing. Re-roofing for roofs where neither sheathing nor insulation exposed. Roofs without insulation in the cavity and where the sheathing or insulation is exposed during re-roofing shall be insulated either above or below the sheathing.

12 Mandatory Requirements Air Leakage Control Building envelope Building envelope Sealed with caulking materials or Sealed with caulking materials or Closed with gasketing systems Closed with gasketing systems Joints and seams sealed or taped Joints and seams sealed or taped Air permeable insulation is not used as air sealing material Air permeable insulation is not used as air sealing material

STRETCH CODE APPENDIX 120.AA

16www.mass.gov/Eeops/docs/dps/inf/appendix_120_aa_jul09_09_final.pdf

Why an Optional Stretch Code? Growing desire to reduce costs, reduce dependency on imported fuels, and address climate change Growing desire to reduce costs, reduce dependency on imported fuels, and address climate change Several towns and cities asked for the ability to adopt stronger building codes Several towns and cities asked for the ability to adopt stronger building codes BBRS developed one alternative code that is consistent across the state BBRS developed one alternative code that is consistent across the state 17

What does the Stretch Code Apply to? Residential Residential New Construction New Construction Additions Additions Home Renovations Home Renovations Commercial Commercial New Construction New Construction Additions Additions 18

Why Test Performance? Prescriptive codes don’t guarantee good installation, air and water tightness, or that thermal insulation is effective. (small air gaps can reduce insulation R- values by 50% or more) Image source: Environmental Protection Agency 20

Why Test Performance? (cont’d) Design, Installation & Equipment are all important. Blower-door test for air leakage Blower-door test for air leakage Duct test for heating & AC Duct test for heating & AC Infra-red camera tests thermal barrier install (optional) Infra-red camera tests thermal barrier install (optional) Image source: 21

Residential New Construction

23 Performance Path Performance Path is the only option Performance Path is the only option Uses Home Energy Rating System (HERS) Uses Home Energy Rating System (HERS)Home Energy Rating SystemHome Energy Rating System 70 or less < 3,000 sq ft. 70 or less < 3,000 sq ft. 65 or less > 3,000 sq ft. 65 or less > 3,000 sq ft. Requires a certified HERS rater Requires a certified HERS rater Review building plans Review building plans Check insulation installation Check insulation installation Thermal bypass Checklist Thermal bypass Checklist Blower-door and duct testing Blower-door and duct testing Image source:

What is a HERS Rating? Home Energy Rating System (HERS) Index Home Energy Rating System (HERS) Index Each home is tested, certified and labeled by an independent HERS Rating Company Each home is tested, certified and labeled by an independent HERS Rating Company  Must follow Residential Energy Services Network (RESNET) testing procedures  A HERS Rater uses software to model the home’s energy performance based on plan analysis and on-site testing to calculate a HERS Index. (Can be used instead of ResCheck) 24

25 What is the Thermal Bypass Checklist?

Stretch Code vs. IECC Comparison 26 Typical Existing Home Std New Home IECC 2006 IECC 2012 ~ HERS 70 IECC 2009 ~ HERS 90 Stretch Code < 3000 sq ft - HERS 70 > 3000 sq ft - HERS 65

IECC 2012 – Code Committee Endorses Stretch Code The International Code Council (ICC) held preliminary hearings for the 2012 residential and commercial codes Baltimore in October 2009 The International Code Council (ICC) held preliminary hearings for the 2012 residential and commercial codes Baltimore in October 2009 Based on estimates from the measures that were approved by the IECC committee, upwards of 30% energy savings beyond the 2006 IECC could be possible Based on estimates from the measures that were approved by the IECC committee, upwards of 30% energy savings beyond the 2006 IECC could be possible Final hearings are not until next year, but there’s a lot of momentum for the 30% savings target Final hearings are not until next year, but there’s a lot of momentum for the 30% savings target The 2012 code wouldn’t likely be adopted by states until 2013 The 2012 code wouldn’t likely be adopted by states until 2013 Requires 25% better than ASHRAE Requires 25% better than ASHRAE

Home Additions

29 Performance or Prescriptive Path Addition Only Performance Path Performance Path 70 or less < 3,000 sq ft. 70 or less < 3,000 sq ft. 65 or less > 3,000 sq ft. 65 or less > 3,000 sq ft. Prescriptive Path ENERGY STAR Windows (U=.30) ENERGY STAR Windows (U=.30) IECC 2009 insulation and envelope requirements IECC 2009 insulation and envelope requirements Duct leakage under 4 cfm per 100 sq ft Duct leakage under 4 cfm per 100 sq ft Builder Verified Thermal Bypass Checklist Builder Verified Thermal Bypass Checklist

Home Renovations

31 Performance or Prescriptive Path Performance Path is easier than for new construction and additions Performance Path is easier than for new construction and additions Easier HERS index requirement (mostly relevant for gut-renovations) Easier HERS index requirement (mostly relevant for gut-renovations) 85 or less < 2,000 sq ft. 85 or less < 2,000 sq ft. 80 or less > 2,000 sq ft. 80 or less > 2,000 sq ft. Prescriptive Path Prescriptive Path Same as additions Same as additions Image source:

Stretch Code and ENERGY STAR The Stretch appendix almost puts the current ENERGY STAR Homes program into code The Stretch appendix almost puts the current ENERGY STAR Homes program into code ENERGY STAR is a proven cost-effective program ENERGY STAR is a proven cost-effective program 31% in 2010 of new construction in MA 31% in 2010 of new construction in MA Builder incentives/rebates Builder incentives/rebates Incentives up to $8000, Incentives up to $8000, Rebates on appliances, Rebates on appliances, heating and cooling, lighting, etc. heating and cooling, lighting, etc. Builder training and materials Builder training and materials Subsidized HERS raters Subsidized HERS raters Third party verification Third party verification 32

Compliance Codes and Training

Code Compliance & Inspections Code Compliance & Inspections Essentially the same as base code Essentially the same as base code Code Official has the same authority Code Official has the same authority Same building inspections Same building inspections Approves building documents, Approves building documents, HERS rating and ASHRAE modeling as required Final HERS Rating is required for Certificate of Occupancy Final HERS Rating is required for Certificate of Occupancy 34

COMMERCIAL STRETCH CODE 35

36 Commercial ‘Stretch’ Appendix Based on New Buildings Institute – ‘Core Performance’ Energy Code

37 Commercial ‘Stretch’ Appendix Only New Commercial Buildings Only New Commercial Buildings Only buildings over 5,000 ft 2 Only buildings over 5,000 ft 2 Two Options (depending on size) Two Options (depending on size) Performance option - 20% below Code Performance option - 20% below Code Prescriptive option for most building types Prescriptive option for most building types 5, ,000 ft2

Code Compliance & Inspections Code Compliance & Inspections Essentially the same as base code Essentially the same as base code Code Official has the same authority Code Official has the same authority Same building inspections Same building inspections Approves building documents, Approves building documents, Energy Star and HERS rating or ASHRAE modeling as documentation of energy Certificate is required Certificate is required

Training on new energy codes Training on new energy codes Covering both the IECC 2009 & Stretch code Covering both the IECC 2009 & Stretch code Provided free to all Code Officials Provided free to all Code Officials Includes IECC code book and Stretch appendix Includes IECC code book and Stretch appendix Provided at cost to building professionals Provided at cost to building professionals Register online: Register online: Separate Commercial and Residential sessions Separate Commercial and Residential sessions Energy star homes training available for free: Energy star homes training available for free: Utilities offer commercial ‘Core Performance’ energy training Utilities offer commercial ‘Core Performance’ energy training

Questions? 42

Appendix

Stretch Code Case Studies 44

“A good hockey player plays where the puck is. A great hockey player plays where the puck is going to be.” Wayne Gretzky