Hi all, I am working on the adoption of the 2015 I-Codes and am reluctant about accepting some of the requirements in the 2015 IECC. For steel-framed buildings, the same window requirements apply; however, refer to IECC section R402.2.6 for specific insulation R-value requirements. ANSI/ASHRAE/IESNA 90.1-2013. Please verify the following before calling for the insulation inspection. C403.2.9 Duct and plenum insulation and sealing. 1 through 4 #1. Meeting 2012 International Energy Conservation Code Requirements with Hybrid Insulation Systems With the more stringent new thermal resistance and airtightness requirements of the 2012 International Energy Conservation Code (IECC), energy-efficient exterior wall assemblies are now an even higher priority in North American new construction and . International Energy Conservation Code (IECC)/ Continuous Insulation (CI) DETERMINING THE R VALUE Step 1 Based on the geographic location of the residential or commercial project, select the appropriate Climate Zone based on FigureC301.1 (below) which was derived from the 2012 IECC. the City of Scottsdale adopted International Energy Conservation Code (IECC) and amendments. 1. Like the 2009 IECC, the 2015 IECC requires duct leakage testing for any HVAC system with some portion located outside the building thermal envelope. In both standards, the required insulation thickness is based on the climate zone and where the duct is located. INTERNATIONAL ENERGY CONSERVATION CODE SIGNIFICANT CHANGE COMPARISON STUDY 8 IECC-2012 AMENDED IECC-2015 IECC-2018 C402.2 Specific building thermal envelope insulation requirements (Prescriptive). *Revise Table C402.1.3 'Opaque Thermal Envelope Insulation Component Minimum Requirements, R-Value Methoda . For steel-framed buildings, the same window requirements apply; however, refer to IECC section R402.2.6 for specific ceiling, wall and floor insulation R-value requirements. The only option that allows minimal insulation is Semi-Heated Space within ASHRAE 90.1-2013. The commercial IECC and ASHRAE 90.1 introduced the R-12 code change in an effort to address the inefficiencies of these types of duct systems. The big one (for here) is Table 402.1.2 Insulation and fenestration requirements by component. C406.5 - On-site Supply of Renewable energy . Data compiled by U.S. Department of Energy @ www.energycodes.gov BECU [Building Energy Code Univeristy] for clarification on IECC 2015 Code Requirements * Group R within each Climate Zone = Buildings with residential occupancies, Hotels, Motels, or Boarding Houses 23 . Each county in the US is sorted . Buildings located in the Tropical Climate Zone have some specific compliance requirements/waivers. Roofing‐specific requirements of IECC 2015 May 18, 2017 6 Arizona Roofing Contractors Association Webinar "Low‐energy buildings" are exempted •Those with a peak design rate of energy usage less than 3.4 Btu/h ∙ ft2 (10.7 W/m2) or 1.0 watt per square foot (10.7 W/m2) of floor area for space . (with Normative Appendix G Excerpt published in June 2015) 2. (2012 and 2015 IECC Section R403.2.2, 2018 IECC Section R403.3) In the 2015 and 2018 IECC, the values of duct leakage are prescriptive, as is the duct insulation. R-25ci: Metal buildings . Insulation entirely above roof deck. Location. 2015 INTERNATIONAL ENERGY CONSERVATION CODE ® C-55. Structure of the 2015 IECC - Structure of the code - need a slide that shows the different chapters of the code for residential and commercial 4 Table of Contents . Supply and return ducts everywhere else must be a minimum of R-6 (where ≥3-inch . IECC 2015 - International Energy Conservation Code 2015. The IECC 2015 and ASHRAE 90.1-2013 have the most stringent envelope requirements based on "Conditioned Space" and "Non-Residential Space". Insulation Requirements & 2021 IECC First Look One common question many people ask is, just how much insulation should I have or use for XY or Z? The table is based upon the thermal envelope requirements in the 2015 IECC's prescriptive compliance Duct sealing and testing are non-tradable requirements, and the minimum provisions must be met regardless of the path selected for compliance. For steel-framed buildings, the same window requirements apply; however, refer to IECC section R402.2.6 for specific insulation R-value requirements. However, there is an exception. The 2009 IECC was subsequently adopted by the state. The IECC 2015 and ASHRAE 90.1-2013 have the most stringent envelope requirements based on "Conditioned Space" and " Non-Residential Space". Arrows indicate where a section, paragraph, item in a list, exception or table has been deleted. Group R: Roofs. The 2012 IECC requires supply ducts in the attic to be R-8 and all other ducts R-6. protected through the air sealing requirements of the code, the risk of reduced insulation effectiveness can be minimized. The 2012 IECC requires supply ducts in the attic to be R-8 and all other ducts R-6. Figure 1 - Strapped ceiling insulated with fiberglass batts Figure 2 - Ceiling with resilient channel Fiberglass batts are allowed in strapped ceiling assemblies under the 2015 IECC provided that the mandatory air sealing The table also applies to all additions, alterations and replacement windows. This means that, for the most part, contractors will need to use Liner Systems (Ls) or Long Tab Banded Systems (Fc) in order to meet the stricter insulation requirements. Performance Requirements. It is commonly misunderstood that because of this code section, any variation of thickness greater than 1 inch does not meet the Code. The 'Mandatory' requirements of the IECC apply to all compliance methods. Whats New Margin Markings within the 2015 Solid vertical lines indicate a technical change from the requirements of the 2012 (2009) edition. Supply and return ducts in the attic must be a minimum of . The new chapter contains five sections: 501 General—Applies to all alteration, repair, addition, and change of occupancy of existing buildings and structures. 2015 IECC -Intent • The code is not intended to abridge safety, health or environmental requirements contained in other applicable codes or ordinances. 2. R-38 shall be deemed to satisfy the requirement for R-49 wherever the full height of uncompressed R-38 insulation extends over the wall top plate at the eaves. Supply and return ducts everywhere else must be a minimum of R-6 (where ≥3-inch . IECC Total Building Performance where proposed building energy cost ≤85% of standard reference design building 34 "With the changes to the 2015 IECC, it will be easier for building departments to correlate the building code- and energy code- requirements for roof replacements." The clarification to the 2015 IECC makes the code easier to interpret and enforce. However, these new codes have also created new and unique challenges for system installers and designers. The 2015 code revises the requirements as follows: Supply and return ducts in the attic must be a minimum of R-8 (where ≥3-inch diameter) and R-6 (where <3-inch diameter). The table also applies to all additions, alterations and replacement windows. As a result, the 2015 codes call for R-7.5 continuous insulation on metal framed commercial buildings, according to Table C402.1.3 in the 2018 International Energy Conservation Code. New 2015 IECC Code Layout The Code is divided into two (2) sets of provisions: IECC Commercial Provisions ( C ) IECC Residential Provisions ( R ) Chapter 1 Scope and Administration Chapter 2 Definitions Chapter 3 Climate Zones & General Materials Requirements Chapter 4 Energy Efficiency Requirements Chapter 5 Existing Buildings Chapter 6 Referenced Standards 2015 International Energy Conservation Code (IECC) . Prescriptive Requirements. 2015 International Energy Conservation Code (IECC) . The IECC 2015 and ASHRAE 90.1-2013 have the most stringent envelope requirements based on "Conditioned Space" and "Non-residential Space." The only option that allows minimal insulation is Semi-Heated Space within ASHRAE 90.1-2013. Structure of 90.1-2013 and 2015 IECC Building Thermal Envelope Provisions 2015 IECC Section C402 General (Section C402.1) • Opaque, roof SR and TE, fenestration and air leakage • Low-energy buildings • Equipment buildings • Insulation component R-value method • Assembly U, C or F factor method • Component performance method building complies with 2015 IECC C402.5 BUT Grade 1 insulation is still mandatory for NGBS compliance. For steel-frame d buildings, the same window requirements apply; however, refer to IECC section R402.2.6 for specific insulation R-value requirements. 104.2.1 Footings and Foundations (Insulation requirements) 104.2.2 Framing and Rough-in (Insulation, Air sealing Fenestration) 104.2.3 Plumbing (Insulation, Controls , Heat traps) 104.2.4 Mechanical HVAC equipment sizing, Controls, Damper Leakage) This certificate is based on the 2015 International Energy Conservation Code (IECC), as amended by the 2017 Pikes Peak Re-gional Building Code. 2015 IECC Compliance Options. The new building is two stories high and framed with light gage steel. Each project will have its own specific requirements for satisfying 2015 IECC standard compliance based on a variety of factors. • Specific insulation requirements of Section C402.2 • Thermal requirements of either: - R-value-based method of Section C402.1.3 - U-, C-, and F-factor-based method of Section C402.1.4 . (R106.3.1 and R105.7 or localordinance) R-value: 2: 13: 38: 13: 3: 20 or 13+5* 38: 19: 4: 20 or 13+5* 49: 19 * 13+5 = R 13 wall cavity + R5 continuous insulation. A single asterisk [*] indicates that text or a table has been relocated elsewhere in the code. The IBC contains the basic material requirements for roof covering assemblies. Component Requirements + Unit 1: 2015 IECC Overview of Components: Unit 2: Slabs: Unit 3: Crawlspaces: Unit 4: Below-Grade Walls: Unit 5: Floors: Unit 6: Fenestrations: Unit 7: Walls: Unit 8: Ceilings: Module 4 Mandatory Requirements-Unit 1: 2015 IECC Mandatory Requirements: Unit 2: Air Sealing and Insulation Requirements: Unit 3: Mandatory . Leviton Mfg. Residential Provisions of the 2015 International Energy Conservation Code is amended by adding Paragraph R402.2. All Other. PA302.1 Ceilings with attic spaces (N1102.2.1 (R402.2.1)): The 2015 IRC requires R-49 insulation for ceilings with attic spaces. The 2012 IECC included most of the changes that are in the 2015 IECC, and produced energy savings in heating and lighting, but was not subsequently adopted by the state. Table C402.1.3 Opaque Thermal Envelope Insulation Minimum Requirements, R-Value Method. Review the standard for specific requirements and/or consult with a professional advisor. Item 2.2 in the mandatory requirements requires that "ceiling, wall, floor, and slab insulation shall meet or exceed 2015 IECC levels." The minimum insulation requirements for ceilings, walls, floors, and foundations in new homes, as listed in the 2015 IECC can be found on the Compliance Tab of this guide. Higher insulation values: IECC 2015 and ASHRAE 90.1-2013 have the most stringent envelope requirements based on "Conditioned Space" and "Non-Residential Space." This means that, for the most part, contractors will need to use Banded Liner Systems or Long Tab Banded Systems in order to meet the stricter insulation requirements. The prescriptive air barrier and insulation criteria are also mandatory for every home. Residential Insulation July 2016 This Inspection Checklist reflects code requirements of the 2015 International Residential Code (IRC) and 2015 Washington State Energy Code (WSEC). BUILDING ENERGY CODES www.energycodes.gov. R301.1 (residential climate zones) is similar Where insulated siding is used for the purpose of complying with the continuous insulation requirements of Table R402.1.2, the manufacturer's labeled R-value for insulated siding shall be reduced by R-0.6. 2015 IECC Insulation Requirements: Climate Zone: Wall R-Value: Ceiling R-value: Floor . (R106.3.1 and R105.7 or localordinance) Section C402. The only option that allows minimal insulation is Semi-Heated Space within ASHRAE 90.1-2013. 2015 IRC/IECC - Residential One- and Two-Family Dwellings and . Higher insulation values: IECC 2015 and ASHRAE 90.1-2013 have the most stringent envelope requirements based on "Conditioned Space" and " Non-Residential Space". Co., Inc. is not responsible for any loss resulting from the use of any . C301.1‐Climate zones Fig. For steel-frame d buildings, the same window requirements apply; however, refer to IECC section R402.2.6 for specific insulation R-value requirements. 303.2 Insulation installation to manufacturer's instructions and IBC / IRC requirements 401.3(M) Certificate posted on a wall where the furnace is located, a utility room or other approved location with system R or U values of system components, SHGC Oct 19, 2016. Along the way, it will help ensure the opportunity to save energy when replacing roofs. 2015 IECC Section C403.2.9 Duct and plenum insulation and sealing: Supply and return air ducts and plenums shall be insulated with a minimum of R-6 insulation where located in unconditioned spaces and where located outside the building with a minimum of R-8 insulation in Climate Zones 1 through 4 and a minimum of R-12 insulation in Climate Zones Duct insulation requirements are outlined in section 6.4.4.1.2 of ASHRAE 90.1 and in section C403.2.9 of the IECC. This generally gets followed up by what type, is more better, how about diminishing returns, and the list goes on… 2015/18 IECC "HERS/ERI" Mandatory Requirements 13 14 14 GA LIMITS ON TRADEOFFS • Home must meet mandatory requirements of R401.2 and R403.5.3 • The building thermal envelope shall be greater than or equal to levels of efficiency of the GA 2011/2009 IECC • Applies to all trade‐off options The 2015 IECC also introduced more stringent requirements . ASHRAE 90.1 also includes different requirements for heating and AC ducts, heating only ducts, and AC only ducts. Other exceptions or details may apply. IRC, not the IECC) • Mandatory whole-house pressure test • More stringent duct leakage test • DHW distribution system requirements - Minor changes - Key non-changes • Retains prohibition on envelope-equipment trade-offs • Makes lighting requirements "mandatory" 2012 IECC Overview - Major Changes The following discussion references specific sections and requirements of the 2012 IECC[1], but applies equally to other editions of the IECC as well. 2015 IECC - Chapter 3. requirements in the 2009 IECC's prescriptive compliance option for the appropriate climate zones (Table 402.1.1) and does not reflect any state-specific amendments to the IECC. The simplified table of building envelope requirements (on the previous page) applies to new residential buildings, as defined in the IECC, with wood framing and/or mass walls. 6. 31.Energy Certificate [R401.3] 32.Insulation [R402.1, R402.2] . Conservation Code (2015 IECC to 2018 IECC). Determining Your Climate Zone is the First Step in the Process. Under the 2015 IECC requirements, there are more prescriptive wall insulation requirements that include continuous, exterior insulation. • New for the 2015 IECC - advanced by HERS raters, builders who wanted some means of trading off envelope and HVAC/water heating performance • 2015 IECC set ERI at 52 for Climate Zone 2 - score of 59 was offered by LBA but rejected by ICC • House Bill 1736 set ERI of 65 for CZ2, stepping down to 59 in 2022 - cities can adopt lower ERI About Energy Codes The IECC allows three different methods to be used to show compliance with minimum energy efficiency requirements: prescriptive, trade-off or system performance, and whole building energy analysis. R-5 insulation has been added as a requirement in Table C402.1.3 . 2015 REScheck ERI Compliance Alternative R406 NEW IN UTAH 5th OPTION UTAH 2012 RESCHECK Mechanical Option Pass by: 3%- Jan 1, 2017- Jan 1, 2019 4% - Jan 1, 2019 - Jan 1, 2021 5% - Jan 1, 2021 THE CODE ALLOWS ANY OF THESE COMPLIANCE OPTIONS Insulation and Fenestration - Requirements by Climate Zone The 2015 code revises the requirements as follows: Supply and return ducts in the attic must be a minimum of R-8 (where ≥3-inch diameter) and R-6 (where <3-inch diameter). 2015 IECC - Prescriptive . Permit and approved plans are on the site. Climate Zones. The table also applies to all additions, alterations and replacement windows. 2015 IECC - Performance . . Climate Zone. Please verify the following before calling for the insulation inspection. Piping insulation exposed to the weather shall be protected from damage, including Sup-ply and return air ducts and plenums shall be insulated with a minimum of R-6 insulation where located in uncondi-tioned spaces and where located outside the building with a minimum of R-8 insulation in . In order to clarify this—and many other items—The ICC created a new chapter for it in the 2015 edition of the IECC & IRC—Chapter 5 Existing Buildings / N1107 (IRC). select either IECC 2015 or ASHRAE/IESNA Standard 90.1-2013. . Pennsylvania is in IECC climate zone 5A, which is designated as cold. Fenestration (IECC sections 303.1.3, 402.3, 402.5) GA International Energy Conservation Code Supplements and Amendments 2020 2 . "2015 IECC/IRC Section R402.2.10/N1102.2.10 Slab-On-Grade Floors. C406.6 - orDedicated Outdoor . 2015 IECC Update 17 C/ R 303.1.4.1 Insulated siding Requires R-value of insulated siding to be determined in accordance with ASTM C1363 2015 IECC Update 18 Where insulated siding is used for the purpose of complying with the continuous insulation requirements of Table R402.1.2, the manufacturer's labeled R-value for insulated siding shall be . 2015 IECC -Intent • This code is intended to provide flexibility to permit innovative approaches and techniques to achieve this objective. the application of Section C402.2.2 of the 2015 International Energy Conservation Code (2015 IECC), which allows some exceptions for when the insulation thickness varies 1 inch or less. 7. Remember these definitions: The table also applies to all additions, alterations and replacement windows. The table is based on the thermal envelo pe requirements in the 2015 IECC's prescriptive compliance option This certificate is applicable to One- and Two- family Dwellings as well as Townhouses, R2, R-3 and R-4 buildings three stories or less in height. o ERI scores will be increased from 55 to 61 in CZ 5 and from 51 to 57 in CZ3. The regulations, created by the International Energy Conservation Code, or IECC, is designed to keep buildings as energy-efficient as possible when it comes to heating and cooling. Other provi-sions for rerooing can be found in the International Existing Building Code (IEBC) and the International Energy Conservation Code (IECC). IECC would provide savings, despite some reductions in required envelope insulation. The opaque portions of the building thermal envelope shall comply with the specific insulation requirements of Section C402.2 and the thermal requirements of either the R-value-based method of Section C402.1.3; . Duct Leakage Limits Reduced Dramatically. 2015 I‐code R‐values and best practices Building Enclosure Council (BEC) ‐Baltimore November 10, 2015 4 IECC 2015, Fig. IECC envelope., mechanical systems, service water heating, electrical power and lighting systems requirements AND one additional efficiency option 3. The big change is the reduction of the maximum leakage rate by two . Specifically wood frame wall R-values for zones 7 & 8 requiring R-20+5 or 13+10. R402.1.4 U-factor alternative. Identify the 20 most important Illinois Energy Conservation Code . requirements of R406.2 and the thermal envelope shall meet or exceed the requirements of the 2015 IECC. Building Envelope. Colorado. The INTERNATIONAL ENERGY CONSERVATION CODE, 2015 Edition, published by . Here is a look at the different insulation and window factors they consider, and the requirements across the eight US climate zones. The table is based upon the thermal envelope requirements in the 2015 IECC's prescriptive compliance Slab-on-grade floors with a floor surface less than 12 inches below grade should be insulated in accordance with information provided in the Insulation and Fenestration Requirements by Component Table, which is reproduced following this paragraph. Specific Insulation Requirements R402.2 Hawaii Specific R402.2 Specific insulation requirements (Prescriptive). the code requirements for rerooing projects, it is necessary to review three separate codes. Data compiled by U.S. Department of Energy @ www.energycodes.gov BECU [Building Energy Code Univeristy] for clarification on IECC 2015 Code Requirements * Group R within each Climate Zone = Buildings with residential occupancies, Hotels, Motels, or Boarding Houses This • Insulation installation (R-values), fenestration (U-factor and SHGC) and continuous air barrier . Permit and approved plans are on the site. 2015, 2018, 2021 IECC: The first value is cavity insulation; the second value is continuous insulation. Where some or all of an existing fenestration unit is replaced with a new fenestration product, including slash and glazing, the replacement fenestration unit shall meet the applicable requirements for U-factor and SHGC in Table C402.4. * 2015 IECC: C403.2.9 - Duct and Plenum Insulation & Sealing. This guidance is intended to supplement, not substitute for the 2015 NGBS - that is always the definitive The table is based upon the thermal envelope requirements in the 2015 IECC's prescriptive compliance New 2015 IECC Code Layout The Code is divided into two (2) sets of provisions: IECC Commercial Provisions ( C ) IECC Residential Provisions ( R ) Chapter 1 Scope and Administration Chapter 2 Definitions Chapter 3 Climate Zones & General Materials Requirements Chapter 4 Energy Efficiency Requirements Chapter 5 Existing Buildings Chapter 6 Referenced Standards Insulation in building thermal envelope opaque assemblies shall comply with Sections C402.2.1 through C402.2.6 and • Specific insulation requirements of Section C402.2 • Thermal requirements of either: - R-value-based method of Section C402.1.3 - U-, C-, and F-factor-based method of Section C402.1.4 . The table is based upon the thermal envelope requirements in the 2015 IECC's prescriptive compliance Residential Insulation July 2016 This Inspection Checklist reflects code requirements of the 2015 International Residential Code (IRC) and 2015 Washington State Energy Code (WSEC). For steel-framed buildings, the same window requirements apply; however, refer to IECC section R402.2.6 for specific insulation R-value requirements. Energy Code Requirements: The 2015 IECC has different requirements for wall and ceiling insulation R-values for each climate zone in . Conditioned Space: Space that will be heated above 3.4btu's/hr/ft2 and/or cooled (per IECC 2015). on tapered insulation systems According to the 2015 International Energy Conservation Code (IECC), under Insulation Requirements, the building thermal envelope shall meet the requirements of Tables C402.2 based on the climate zones 14 "Insulation Installed in Walls," to read as follows: "R402.2.14 Insulation installed in walls. ceiling and foundation is as important to code compliance as are proper insulation R-values and component U-factors. R-20ci. C402.1.3 Insulation component R-value-based method o Heated Slab Insulation. 2015 IECC Commercial DFW area handout . Therefore, as an example, "13+5" means R-13 cavity insulation plus R-5 continuous insulation. 2009-2018 IECC: Alternatively, insulation sufficient to fill the framing cavity and providing not less than an R-value of R-19. Top 40 Requirements (Part 2): 2018 IECC Commercial HVAC NREL HVAC Resource Map. The table also applies to all additions, alterations and replacement windows.

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