Residential Insulation July 2016 This Inspection Checklist reflects code requirements of the 2015 International Residential Code (IRC) and 2015 Washington State Energy Code (WSEC). 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. Duct sealing and testing are non-tradable requirements, and the minimum provisions must be met regardless of the path selected for compliance. All Other. Specific Insulation Requirements R402.2 Hawaii Specific R402.2 Specific insulation requirements (Prescriptive). 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) C406.6 - orDedicated Outdoor . o ERI scores will be increased from 55 to 61 in CZ 5 and from 51 to 57 in CZ3. 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). IECC envelope., mechanical systems, service water heating, electrical power and lighting systems requirements AND one additional efficiency option 3. However, these new codes have also created new and unique challenges for system installers and designers. Pennsylvania is in IECC climate zone 5A, which is designated as cold. 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. For steel-framed buildings, the same window requirements apply; however, refer to IECC section R402.2.6 for specific insulation R-value requirements. GA International Energy Conservation Code Supplements and Amendments 2020 2 . 2015 IECC -Intent • This code is intended to provide flexibility to permit innovative approaches and techniques to achieve this objective. 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. 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; . Fenestration (IECC sections 303.1.3, 402.3, 402.5) Co., Inc. is not responsible for any loss resulting from the use of any . The 2012 IECC requires supply ducts in the attic to be R-8 and all other ducts R-6. The table is based upon the thermal envelope requirements in the 2015 IECC's prescriptive compliance 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 . 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. Residential Provisions of the 2015 International Energy Conservation Code is amended by adding Paragraph R402.2. In both standards, the required insulation thickness is based on the climate zone and where the duct is located. Building Envelope. This generally gets followed up by what type, is more better, how about diminishing returns, and the list goes on… Like the 2009 IECC, the 2015 IECC requires duct leakage testing for any HVAC system with some portion located outside the building thermal envelope. 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. 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. Each project will have its own specific requirements for satisfying 2015 IECC standard compliance based on a variety of factors. 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 • 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 . 2015 IECC - Chapter 3. Other provi-sions for rerooing can be found in the International Existing Building Code (IEBC) and the International Energy Conservation Code (IECC). Conditioned Space: Space that will be heated above 3.4btu's/hr/ft2 and/or cooled (per IECC 2015). Piping insulation exposed to the weather shall be protected from damage, including ANSI/ASHRAE/IESNA 90.1-2013. 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 prescriptive air barrier and insulation criteria are also mandatory for every home. 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 Compliance Options. Duct Leakage Limits Reduced Dramatically. 2015 IECC Insulation Requirements: Climate Zone: Wall R-Value: Ceiling R-value: Floor . building complies with 2015 IECC C402.5 BUT Grade 1 insulation is still mandatory for NGBS compliance. 2015 International Energy Conservation Code (IECC) . The only option that allows minimal insulation is Semi-Heated Space within ASHRAE 90.1-2013. 2015 International Energy Conservation Code (IECC) . * 2015 IECC: C403.2.9 - Duct and Plenum Insulation & Sealing. ceiling and foundation is as important to code compliance as are proper insulation R-values and component U-factors. BUILDING ENERGY CODES www.energycodes.gov. The only option that allows minimal insulation is Semi-Heated Space within ASHRAE 90.1-2013. Each county in the US is sorted . Buildings located in the Tropical Climate Zone have some specific compliance requirements/waivers. Section C402. Higher insulation values: IECC 2015 and ASHRAE 90.1-2013 have the most stringent envelope requirements based on "Conditioned Space" and " Non-Residential Space". R-5 insulation has been added as a requirement in Table C402.1.3 . 1 through 4 • 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 23 . Identify the 20 most important Illinois Energy Conservation Code . The table is based upon the thermal envelope requirements in the 2015 IECC's prescriptive compliance Top 40 Requirements (Part 2): 2018 IECC Commercial HVAC NREL HVAC Resource Map. requirements of R406.2 and the thermal envelope shall meet or exceed the requirements of the 2015 IECC. Group R: Roofs. Colorado. 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 . The table also applies to all additions, alterations and replacement windows. 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). 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 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 For steel-framed buildings, the same window requirements apply; however, refer to IECC section R402.2.6 for specific insulation R-value requirements. Under the 2015 IECC requirements, there are more prescriptive wall insulation requirements that include continuous, exterior insulation. 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 . The table is based on the thermal envelo pe requirements in the 2015 IECC's prescriptive compliance option Table C402.1.3 Opaque Thermal Envelope Insulation Minimum Requirements, R-Value Method. 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. Therefore, as an example, "13+5" means R-13 cavity insulation plus R-5 continuous insulation. C402.1.3 Insulation component R-value-based method o Heated Slab Insulation. The big one (for here) is Table 402.1.2 Insulation and fenestration requirements by component. R-20ci. 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. 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. 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. #1. 2015 IECC -Intent • The code is not intended to abridge safety, health or environmental requirements contained in other applicable codes or ordinances. The table also applies to all additions, alterations and replacement windows. 2015 I‐code R‐values and best practices Building Enclosure Council (BEC) ‐Baltimore November 10, 2015 4 IECC 2015, Fig. 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 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 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. For steel-frame d buildings, the same window requirements apply; however, refer to IECC section R402.2.6 for specific insulation R-value requirements. Oct 19, 2016. 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