ASTM_C_1743_-_12.pdf

Designation:C174312Standard Practice forInstallation and Use of Radiant Barrier Systems(RBS)inResidential Building Construction1This standard is issued under the fixed designation C1743;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice has been prepared for use by the designer,specifier,builder,and the installer of radiant barrier systems(RBS)for use in(multi-and single-family)residential buildingconstruction,not otherwise restricted from use.The scope islimited to instructions relative to the use and installation ofRBS,including a surface(s)normally having an emittance of0.1 or less,such as metallic foil or metallic foil deposits,mounted on substrates.Some examples that this practice isintended to address include:(1)low-emittance surfaces invented building envelope cavities intended to retard radianttransfer across the airspace:(2)low-emittance surfaces atinterior building surfaces intended to retard radiant transfer to,or from,building inhabitants;and(3)low-emittance surface atinterior building surfaces intended to reduce radiant transfer to,or from,radiant heating or cooling systems.1.2 This practice covers the installation process from pre-installation inspection through the post-installation procedure.It does not cover the production of the radiant barrier materials.(See Specification C1313.)1.3 This practice is not intended to replace the manufactur-ers installation instructions but shall be used in conjunctionwith such instructions.This practice is not intended to super-cede local,state,federal,or international codes.1.4 This practice assumes that the installer possesses a goodworking knowledge of the applicable codes and regulations,safety practices,tools,equipment,and methods necessary forinstallation of radiant barrier materials.It also assumes that theinstaller understands the fundamentals of residential buildingconstruction that affect the installation of RBS.1.5 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.6 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.For specificprecautionary statements see Sections 5 and 7.2.Referenced Documents2.1 ASTM Standards:2C168 Terminology Relating to Thermal InsulationC1313 Specification for Sheet Radiant Barriers for BuildingConstruction Applications2.2NFPA Standards3NFPA 54 National Fuel Gas CodeNFPA 211 Standard for Chimneys,Fireplaces and Vents2.3 Other Document:4CPSC Product Safety Fact Sheet No.18“The Home Elec-trical System”3.Terminology3.1 DefinitionsFor definitions of terms used in thispractice,refer to Terminology C168.3.2 Definitions of Terms Specific to This Standard:3.2.1 applicator,nperson or persons who apply radiantbarrier materials in buildings.3.2.2 conditioned space,nany space in a building that isserved by a heating or cooling system.3.2.3 open air space,nvented building cavity(forexample,a vented attic)or a large conditioned or uncondi-tioned building space.3.2.3.1 DiscussionAlarge building space is defined as onewhose minimum dimension exceeds 2 ft(0.6 m).1This practice is under the jurisdiction of ASTM Committee C16 on ThermalInsulation and is the direct responsibility of Subcommittee C16.21 on ReflectiveInsulation.Current edition approved May 1,2012.Published June 2012.originally approvedin 2010.Last previous edition approved in 2010 as C174310.DOI:10.1520/C174312.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from National Fire Protection Association(NFPA),1 BatterymarchPark,Quincy,MA 02169-7471,http:/www.nfpa.org.4Available from U.S.Consumer Product Safety Commission(CPSC),4330 EastWest Hwy.,Bethesda,MD 20814,http:/www.cpsc.gov.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.2.4 radiant barrier system,RBS,nbuilding constructionassembly consisting of a low-emittance(0.1 or less)surfacebounded by an open air space on one or both sides.3.2.4.1 DiscussionA RBS is used for the sole purpose oflimiting heat transfer by radiation,into or out of a buildingassembly.An RBS is not specifically intended to reduce heattransfer by convection or conduction.4.Significance and Use4.1 In this practice it is recognized that effectiveness,safety,and