Town of Farragut RESIDENTIAL CONSTRUCTION ENERGY EFFICIENCY. LAST UPDATE: July 03, 2014

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1 Town of Farragut RESIDENTIAL CONSTRUCTION ENERGY EFFICIENCY LAST UPDATE: July 03, 2014

2 TABLE OF CONTENTS Front Cover Sheet Page 1 Table of Contents Page 2 Applying for a Gas/Mechanical Permit Page 2 Important Note Page 3 Adopted Energy Efficiency Codes Page 3 Energy Related Inspections Page 3-5 Energy Certificates Page 6 Helpful Energy Codes Page 7-10 Sample Certificate of Compliance Page 11 Ventilation Page 12 Notes (Blank page for making notes) Page 12 Rear cover pages Page Applying for a Gas/Mechanical Permit Application Process In order to apply for a gas/mechanical permit all gas/mechanical contractors must be licensed by the State of Tennessee and/or the Town of Farragut and have a valid business license in the Town of Farragut. As part of an application a certificate of liability insurance must be provided to The Town of Farragut or the insurance certificate shall be on file at the Town of Farragut Building Codes Office. All applicants must also provide a Manual J, Heating and Cooling load calculation repot with the application. Permits will not be issued until the Manual J has been submitted to the Building Codes Department. If you have any questions about the application processes please contact our office at Page 2

3 IMPORTANT NOTE!! THE CONTENT OF THIS DOCUMENT IS NOT ALL INCLUSIVE This pamphlet provides information related to the International Energy Conservation Code as enforced by The Town of Farragut. The goal is to acquaint Builders and Homeowners with the codes affecting residential construction. More detail is available by contacting the Town of Farragut, Community Development (Planning and Building Codes) Department at: Building Codes (865) from 8:00 a.m. 5:00 p.m. (Monday thru Friday) or visit our website at / Departments / Community Development / Code Enforcement Division. ADOPTED ENERGY EFFICIENCY CODES As of May 6, 2013, the following Code has been adopted by The Town of Farragut: 2012 International Energy Conservation Code ENERGY CODE RELATED INSPECTIONS Energy Slab Inspection The Energy Slab Inspection is conducted in order to verify that the proper amount of slab insulation has been installed. The slab insulation must be approved for underground applications. The insulation shall have structural integrity and shall extend a minimum of 24 inches either vertically or horizontally around the exterior perimeter of the structure. The Slab insulation shall also meet the minimum required R-Value (R-10 in our region). Also see sections R and R of the 2012 IECC for additional information. Page 3

4 Energy Wall Inspection The Energy Wall Inspection is conducted in order to verify that all insulation, caulking, air barriers, sealing, etc. has been completed in accordance with the following: Table R , Insulation and Fenestration Requirements by Component, and Table R , Air Barrier and Insulation Installation in the 2012 IECC. Section 402, Building Thermal Envelope, lists all general requirements and more information related to the above referenced tables. Mechanical Inspections Mechanical rough-in and final Inspections are required to verify compliance with the 2012 IECC. At the mechanical rough-in inspection all duct work will be assessed to ensure it has been insulated per the code requirements and that all duct work is free from compression, kinks, sharp bends, etc. All duct work must be supported properly, all duct joints must be taped and sealed, and third party testing is required to verify duct tightness. Please see section R402.3 for all duct information and/or the 2012 International Mechanical Code or the 2012 International Residential Code, as applicable. The mechanical final inspection is conducted in order to verify complete installation of all mechanical systems, vents, etc. Programmable thermostats must be provided per code. All systems are required to comply with the current adopted codes. Final Inspection Some items related to the Energy code are inspected during the final inspection. Those items include, but are not limited to, the following: Mechanical ventilation systems, attic insulation, crawl space insulation, attic access doors (all doors separating conditioned and unconditioned spaces), thermostats, and proper support of all equipment and ducts. We will also verify that the certificate of compliance and blower door test results has been posted and a paper copy submitted to the building codes office. Page 4

5 Air Barrier and Insulation Inspection Criteria (per Table R ) 1. Air barrier and thermal barrier - Exterior thermal envelope insulation for framed walls is installed in substantial contact and continuous alignment with building envelope air barrier. Breaks or joints in the air barrier are filled or repaired. Air-permeable insulation is not used as a sealing material. Airpermeable insulation is inside of an air barrier. 2. Ceiling/attic - Air barrier in any dropped ceiling/soffit is substantially aligned with insulation and any gaps are sealed. Attic access (except unvented attic), knee wall door, or drop down stair is sealed (are gasketed and made substantially air tight). 3. Walls - Corners and headers are insulated. Junction of foundation and sill plate is sealed. 4. Windows and doors - Space between window/door jambs and framing is sealed (are gasketed and made substantially air tight). 5. Rim joists - Rim joists are insulated and include an air barrier. 6. Floors (including above-garage and cantilevered floors) - Insulation is installed to maintain permanent contact with underside of subfloor decking. Air barrier is installed at any exposed edge of insulation. 7. Insulated Crawl space walls - Insulation is permanently attached to walls. Exposed earth in unvented crawl spaces is covered with Class I vapor retarder with overlapping joints taped. 8. Shafts, penetrations, duct shafts, utility penetrations, knee walls and flue shafts opening to exterior or unconditioned space are sealed. 9. Narrow cavities- batts in narrow cavities are cut to fit or narrow cavities are filled by sprayed/blown insulation. 10. Garage separation - Air sealing is provided between the garage and conditioned spaces (are gasketed and made substantially air tight). 11. Recessed lighting - Recessed light fixtures are air tight, IC rated, and sealed to drywall. Exception fixtures in conditioned space. 12. Plumbing and wiring Insulation is placed between outside and pipes. batt insulation is cut to fit around wiring and plumbing, or sprayed/blown insulation extends behind piping and wiring. 13. Shower/tub on exterior wall - showers and tubs on exterior walls have insulation and an air barrier separating them from the exterior wall. 14. Electrical/phone box on exterior walls - air barrier extends behind boxes or air sealed-type boxes are installed. 15. Common wall air barrier is installed in common wall between dwelling units. 16. HVAC register boots - HVAC register boots that penetrate building envelope are sealed to subfloor or drywall. 17. Fireplace - Fireplace walls include an air barrier. Page 5

6 Energy Efficiency Certificate of Compliance (EECOC) Third party testing for Energy Conservation is required per IECC. A duct blaster test and a blower door test are required and the results of the testing must be completed by the testing agency and both provided to the Town and permanently posted in the electrical service panel box. Please see section R for more information on testing requirements. Our region, per the IECC, is classified as Region 4 and must be tested accordingly. Insulation Certificate of Compliance (ICOC) In addition to the required third party testing, an insulation certificate must also be provided to the Town of Farragut and permanently posted inside the electrical service panel box. It will be the builder s responsibility to complete the certificate. The certificate shall list the predominant R-values of insulation installed in or on ceiling/roof, walls, foundation (slab, basement wall, crawlspace wall and/or floor) and ducts outside conditioned spaces; U- factors for fenestration and the solar heat gain coefficient (SHGC) of fenestration, and the results from any required duct system and building envelope air leakage testing (EECOC) completed on the building. Where there is more than one value for each component, the certificate shall list the value covering the largest area. The certificate shall list the types and efficiencies of heating, cooling, and service water heating equipment. Where gas-fired unvented room heater, electric furnace, or baseboard electric heater is installed in the residence, the certificate shall list gas-fired unvented room heater, as appropriate. An efficiency shall not be listed for gas-fired unvented room heaters, electric furnaces or electric baseboard heaters. Insulation and Fenestration Requirements by Component The Town of Farragut is listed as being in Climate Zone 4 and the following requirements are minimum requirements. Fenestration U-Factor: 0.35 Skylight U-Factor: 0.55 Glazed Fenestration SHGC: 0.40 Ceiling R-Value: 49 Wood Frame Wall R-Value: Per Town Ordinance = 13 Mass Wall R-Value: 8/13 Floor R-Value: 19 Basement Wall R-Value: 10/13 Slab R-Value and depth: 10, 2 ft. Crawl Space Wall R-Value: 10/13

7 HELPFUL ENERGY CODES R Ceilings with Attic Spaces 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. This reduction shall not apply to the U-Factor alternative approach in Section R and the total UA alternative approach in Section R Please see the 2012 International Energy Conservation Codes for more information. R Ceilings without Attic Spaces Where Section R would require insulation levels above R-30 and the design of the roof/ceiling assembly does not allow sufficient space for the required insulation, the minimum required insulation for such roof/ceiling assemblies shall be R-30. This reduction of insulation from the requirements of Section R shall be limited to 500 Square Feet or 20 percent of the total insulated ceiling area, whichever is less. This reduction shall not apply to the U-Factor alternative approach in Section R and the total UA alternative approach in Section R Please see the 2012 International Energy Conservation Codes for more information. R Access hatches and doors Access doors from conditioned spaces to unconditioned spaces (e.g. attics and crawl spaces) shall be weather-stripped and insulated to a level equivalent to the insulation on the surrounding surfaces. Attic Pull-Down Stairs allowed R10 minimum due to lack of availability of higher R values. Scuttle holes can be insulated to achieve any value. R Mass walls Mass walls, for the purpose of the Energy Code, shall be considered above grade walls of concrete block, concrete, insulated concrete form (ICF), masonry cavity, brick (other than brick veneer), earth (adobe, compressed earth block, rammed earth) and solid timber/logs. R Floors Floor insulation shall be installed to maintain permanent contact with the underside of the sub-floor decking.

8 HELPFUL ENERGY CODES R Basement Walls Walls associated with conditioned basements shall be insulated from the top of the basement wall down to 10 feet below grade or to the basement floor, whichever is less. Walls associated with unconditioned basements shall meet this requirement unless the floor overhead is insulated in accordance with sections R and R R Slab-on-grade floors Slab-on-grade floors with a floor surface less than 12 inches below grade shall be insulated in accordance with table R The insulation shall extend downward from the top of the slab on the outside or inside the foundation wall. Insulation located below grade shall be extended the distance provided in table R by any combination of vertical insulation, insulation extending under the slab or insulation extending out from the building. Insulation extending out from the building shall be protected by pavement or by a minimum of 10 inches of soil. R Crawl space walls As an alternative to insulating floors over crawl spaces, crawl space walls shall be permitted to be insulated when the crawl space is not vented to the outside. Crawl space wall insulation shall be permanently fastened to the wall and extend downward from the floor to the finished grade level and then vertically and/or horizontally at least an additional 24 inches. Exposed earth in unvented crawl space foundations shall be covered with a continuous Class I vapor retarder in accordance with the IBC or IRC, as applicable. All joints of the vapor retarder shall be overlapped by 6 inches minimum and shall be sealed or taped. The edges of the vapor retarder shall extend at least 6 inches up the stem wall and be attached to the stem wall (including piers). Page 8

9 HELPFUL ENERGY CODES R Fireplaces New wood-burning fireplaces shall have tight-fitting flue dampers and outdoor combustion air. R Recessed Lighting Recessed luminaires installed in the building thermal envelope shall be sealed to limit air leakage between conditioned and unconditioned spaces. All recessed luminaires shall be IC-rated and labeled as having an air leakage rate not more than 20. Cfm when tested in accordance with ASTM 283 at a 1.57 psf pressure differential. All recessed luminaires shall be sealed with a gasket or caulk between the housing and the interior wall or ceiling covering. Section R403 - Systems Please refer to section R403 for more information regarding heating and cooling systems. Controls, Supplementary heat, Ducts, Sealed air-handlers, Mechanical System piping insulation, and Mechanical ventilation are all covered in section 403. R403.1 Controls (Mandatory) At least one thermostat shall be provided for each separate heating and cooling system. R Programmable Thermostat Where the primary heating system is a forced-air furnace, at least one thermostat per dwelling shall be capable of controlling the heating and cooling system on a daily schedule to maintain different temperature set points at different times of the day. R Building Cavities (Mandatory) Building framing cavities shall not be used as ducts or plenums. R Hot water pipe insulation (Prescriptive). Hot water piping insulation shall be a min. of R-3 and conform to all requirements as listed in section R and table R Page 9

10 HELPFUL ENERGY CODES R403.6 Equipment Sizing (Mandatory) Heating and Cooling equipment shall be sized in accordance with ACCA Manual S based on building loads calculated in accordance with ACCA Manual J or other approved heating and cooling calculation methodologies. Section R404 Electrical Power and Lighting Systems (Mandatory) Section R404.1 Lighting Systems A minimum of 75 percent of the lamps in permanently installed lighting fixtures shall be high-efficiency lamps or a minimum of 75 percent of the permanently installed lighting fixtures shall contain only high-efficiency lamps. Section R405 Simulated Performance Alternative (Performance Based) Section R405.1 Scope This section establishes criteria for compliance using simulated energy performance analysis. Such analysis shall include heating, cooling, and service water heating energy only. Section R405.2 Mandatory Requirements Compliance with this section requires that the mandatory provisions identified in Section R401.2 be met. All supply and return ducts not completely inside the building thermal envelope shall be insulated to a minimum R-6. NOTE: Section R405 covers all requirements for performance based systems, testing of those systems, software, and documentation. All performance based systems shall be tested to verify the performance of the system as a whole. An analysis report completed by a third party and documentation of the results shall be submitted to the building codes office. Current Home Energy Rated software program to determine the HERS Index Target, which is the highest numerical HERS Index value that each rated home may achieve to earn code compliance. Page 10

11 SAMPLE ENERGY EFFICIENCY & INSULATION CERTIFICATE OF COMPLIANCE Page 11

12 Ventilation Ventilation Third party testing for ventilation systems shall be conducted and documentation of the test results shall be included on or accompany the Energy Efficiency Certificate of Compliance. The ventilation test requirements shall follow ASHRAE 62.2 Section 6.2, ventilation system documentation guidelines. All ranges, cooktops, etc. shall be vented to the outside. Recirculating vent hoods are not allowed. NOTES Page 12

13 The Town of Farragut is committed to answering your questions and addressing your concerns. This pamphlet was created to provide guidance on basic codes affecting residential properties and to identify the appropriate department to contact for more information. This Pamphlet is NOT intended to be a comprehensive guide on the code requirements for Builders, Remodelers or Homeowners in the Town of Farragut. The information and referenced materials in this pamphlet has been compiled by the Town of Farragut and is NOT intended to be an allinclusive list. Page 13

14 Town of Farragut Community Development Department Building Codes Division Farragut Town Hall Municipal Center Drive Farragut, TN Office Hours: Monday Friday 8:00 a.m. 5:00 p.m. Office: (865) Fax: (865) Town of Farragut Inspection Request Line (865) Please visit our website at: for additional information including downloadable applications and documents. Residential Construction Energy Efficiency Last Update: July 03, 2014