Kentucky Training 2009 IECC Residential Provisions

1. Kentucky Training 2009 IECCResidential Provisions

2. Acknowledgements Kentucky Department for Energy Development and Independence Kentucky Department for Housing, Buildings and Construction

3. Acknowledgements This project funded by the American Recovery and Reinvestment Act, through the combined efforts of the following organizations:  Kentucky Department for Energy Development and Independence, the U.S. Department of Energy, and the Kentucky Division of Housing and Building Codes

4. BCAP – Building Codes Assistance Project Non-profit, based in D.C. since 1994 Formed as a joint project of the Alliance to Save Energy, the Natural Resources Defense Council, and the American Council for an Energy Efficient Economy Provide resources, education & advocacy assistance for adoption, implementation, & advancement of effective energy codes on behalf of the US Department of Energyand other funders

5. Speaker Intro, CV Speaker

6. Course Overview • Introduction to Energy Codes • State & National Goals • Proposed 2009 IECC • Residential Requirements • Compliance Approaches • 2009 IECC Residential Requirements • Building Science Behind the Code

7. AIA/CES Credits (Commonwealth Cert. Instead?) The Building Codes Assistance Project is a registered Provider with The American Institute of Architects Continuing Education Systems. Credit earned on completion of this program will be reported to CES Records for AIA members. Certificates of Completion for non-AIA members are available on request.This program is registered with the AIA/CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product. Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation.

8. Why do Energy Codes Matter?

9. Environmental Impact of Buildings 19% Residential • Computers: 1% • Cooking: 5% • Electronics: 7% • Wet Clean: 5% • Refrigeration: 8% • Cooling: 12% • Lights: 11% • Water Heat: 12% • Heating: 31% • Other: 4% 13% Commercial • Cooking: 2% • Computers: 3% • Refrigeration: 4% • Office Equipment: 6% • Ventilation: 6% • Water Heat: 7% • Cooling: 13% • Heating: 14% • Lights: 26% • Other: 13% • 32% of total energy use in Kentucky • 40% of total energy use in United States • 70% of total US electricity consumption

10. VALUE of Energy Codes • Affects ALL new buildings • By 2020: • 23.4 million new housing units • Over 1 trillion sq feet commercial floor space • By 2030: • Over 41 million new housing units • Over 2 trillion sq feet commercial floor space • Source: EIA, Annual Energy Outlook 2008

11. Also… Beyond code activities such as high performance buildings, advanced standards,and green building initiativesprepare the market so that it can handle more energyefficient requirements through codes.

12. Buildings are critical to addressing energy and climate issues Efficient buildings • Avoid global climate change • Reduce foreign oil dependency • Reduce stress on power grid and natural gas supplies • Improve air quality and public health • Save consumers money

13. Why do Energy Codes Matter…For Kentucky?

14. Kentucky’s Energy Code • 2007 Kentucky Residential Code • Based on 2006 IRC, with some modifications that weaken the energy code • Ex: reduction of basement, crawl space, and duct insulation requirements, not longer need to seal recessed light features • Applies to single family dwellings, two-family dwellings and townhouses • 2007 Kentucky Building Code • Covers commercial construction • Based on 2006 IBC • Energy efficiency portion of the IBC unaffected by amendments

15. Where Kentucky Stands KY SEO received > $62M in federal stimulus package for energy programs. To receive state funding Gov. Beshear certified that KY would implement or surpass the national model energy codes 2009 IECC and ASHRAE 90.1-2007, with 90% compliance KY on it’s way with proposal review by Board of Housing

16. Code Improvements • The 2009 IECC is at least 18% more efficient than KY’s current residential code • Based on difference between 2006 and 2009 IECC • Current residential code is less efficient than 2006 IECC • ASHRAE 90.1-2007 is approx. 5.6%more efficient than KY’s current commercial code • Estimate also based on 2006 IECC

17. Potential Energy Savings • If Kentucky updates to the 2009 IECC and begins implementation by 2011… • Homeowners will save $18 million each yearby 2020, assuming constant 2006 energy prices • Average energy bill savings:$336 per household • The impacts by 2030 will be… • $35 million each year in savings • 5.5 trillion Btu of energy saved each year • Over 387,000 metric tons of CO2 averted each year

18. Cost/Benefit of New Energy Code • The cost of upgrading to the latest model energy code is not prohibitive to households and new homebuyers • BCAP estimates that payback to homeowners for their investment in energy efficiency is less than 3 years • These estimates are conservative and represent the upper bound on incremental cost • When these costs are rolled into a 30 year mortgage, the payback becomes a matter of months

19. Energy Code: Not the Perfect Solution by Itself • Energy Codes are highly cost-effective, but to work they need: • Training: Codes can be highly technical, and must be understood to be followed • Enforcement: Buildings must be checked for compliance, an adequate number of code officials is needed for this to be effective

20. What is the IECC? A Required Minimum Level of Energy Efficiency in New Residential and Commercial Construction

21. The International Family of Codes Coordinated family of International Codes, INCLUDING IECC

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

23. IECC/IRC Interrelationship • IECC addresses only energy • In Kentucky– IRC Chapter 11 references IECC for energy

24. Kentucky - 2009 IECC Overview • Energy Code Update: • Residential Provisions and Major Changes from the 2006 IECC/KY Energy Code • Possible Implementation date: Late 2011/Early 2012

25. What’s Different From IECC 2006? New Code Requirements • Stringency – some key differences • New requirements • Building envelope tightness inspection/testing • Duct testing • Lighting equipment • Pool controls and covers • Snow melt controls • Moisture control requirements moved to IRC – Vapor Retarders • No mechanical trade-offs allowed

26. Energy Code Requirements Mandatory Requirements (apply to all buildings): • Duct insulation and sealing • Infiltration control • Temperature controls • Pipe insulation Climate Specific Requirements: • Roofs • Above grade walls • Skylights, windows, and doors • Foundations - Basements, Slabs, Crawlspaces • Kentucky is ALL Climate Zone 4

27. Compliance Who Must Comply? Basic (mandatory?) Requirements Insulation & Window Requirements Prescriptive Package REScheck Software Performance Software

28. Scope and General Requirements - 101 Residential Buildings that must comply: IRC only for single-family, duplex, and townhouses IECC has all low-rise (1-3 stories) houses, condos, and apartments [R-2, R-3, R-4], but not hotels/motels [R-1] All buildings that are not “residential” by definition are “commercial”

29. What Buildings Must Comply? • Residential buildings designated as R-2, R-3, or R-4 buildings three stories or less in height above grade. Perhaps Simpler, Easier to Understand… • All detached, semidetached, and attached structures, including single and multifamily structures up to three stories

30. Applicability/Exceptions – 101.4 • Very low energy use buildings (<3.4 Btu/h-ft2 or 1 watt/ft2) for space conditioning (Section 101.5.2) • Buildings (or portions of) that are neither heated nor cooled • Buildings designated as historic (Section 101.4.2)

31. Additions, Alterations, Renovations, Repairs – 101.4 Code Requirements Changes • Storm windows over existing fenestration • Glass only replacements • Exposed, existing ceiling, wall or floor cavities already filled with insulation • Where existing roof, wall or floor cavity isn’t exposed • Reroofing for roofs where neither sheathing nor insulation exposed Conform as relates to new construction Unaltered portion(s) do not need to comply Additions can comply alone or in combination with existing building Exceptions

32. Mixed Use Buildings – 101.4.6 • Mixed occupancies • Treat the residential occupancy under the applicable residential code • Treat the commercial occupancy under the commercial code

33. Definitions 202 Conditioned Space: The part of the building that is designed to be thermally conditioned for the comfort of occupants or for other occupancies or for other reasons. Building Envelope: The area that separates conditioned space from unconditioned space or the outdoors.

34. Definitions - Others Air Barrier Water Resistive Building Thermal envelope C-Factor Commercial Building vs. Residential Fenestration F-Factor R-Value Service Water Heating SHGC U-Factor

35. Conditioned Space/Building Envelope Outdoors ConditionedSpace

36. Building Envelope Conditioned space attic • Building Envelope consists of: • Fenestration • Windows, doors, skylights • Ceilings • Walls • Above grade • Below grade • Mass walls • Floors • Slab • Crawl space

37. The Building Envelope Can Be Deceiving

38. R-Value R-30 R-19 R-11 • Higher R-value = Better Insulated • A Material Specification • R-value Applies to: • All Walls • Raised Floors • Roofs

39. U-Factor Single PaneU ~ 1.05 Double PaneU ~ 0.50 Double Pane Low-E FilmU ~ 0.35 • Lower U-factor = Better Insulated • Associated with Assemblies • U-factor applies to: • Windows • Skylights • Doors • U=1/R • Includes air films

40. Compliance Who Must Comply? Mandatory Requirements Insulation & Window Requirements Prescriptive Package REScheck Software Performance Software

41. Basic/Mandatory Requirements Materials and Equipment Information Material and Equipment throughout the building should be easily identifiable by the building inspector and homeowner. This includes R-Values, U-Factors, and equipment identification on all mechanical equipment. Building Plans

42. Material Identification (303.1) ie..Insulation Identification

43. NFRC Window Information – 303.1.3

44. Material Identification – 303.1.1.1 • Blown in attic floor insulation must have a depth marker for every 300 sq ft • R-value identification mark must be on all batt insulation wider than 12”

45. Compliance Who Must Comply? Mandatory Requirements Compliance Paths Prescriptive Packages REScheck Software Performance Software

46. Climate Zones—2009 IECC Kentucky – All CZ - 4

47. Prescriptive Packages • Section 402 • U-factor R-value requirements based upon: • Climate Zone • Building component (ceilings, walls, floors, windows, doors) • Does allow some area-weighting (windows) • Footnotes Key • No Window ft2 calcs, ONE Table • Also includes Mandatory requirements

48. Prescriptive Requirements – Table 402.1.1

49. Code Comparison KY Energy Code vs. 2009 IECC • Kentucky’s current code and the 2009 IECC aren’t so different:

50. Alternative U-Factor – Table 403.1.3 *Most Relevant for Use by REScheck Software