1、Designation: C727 12Standard Practice forInstallation and Use of Reflective Insulation in BuildingConstructions1This standard is issued under the fixed designation C727; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of l
2、ast 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, and installer of reflective insulation for use inbui
3、lding construction. The scope is limited to recommenda-tions relative to the use and installation of thermal insulationconsisting of one or more surfaces, having an emittance of 0.1or less such as metallic foil or metallic deposits unmounted ormounted on substrates and facing enclosed air spaces. Th
4、ereflective insulation covered by this practice must meet therequirements of Specification C1224.1.2 This practice covers the installation process from pre-installation inspection through post-installation procedure. Itdoes not cover the production of the insulation materials.1.3 This practice is no
5、t 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, or federal codes.1.4 This practice assumes that the installer possesses a goodworking knowledge of the applicable code
6、s and regulations,safety practices, tools, equipment, and methods necessary forthe installation of thermal insulation materials. It also assumesthat the installer understands the fundamentals of constructionthat affect the installation of insulation.1.5 The values stated in inch-pound units are to b
7、e 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 th
8、e user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C168 Terminology Relating to Thermal InsulationC1224 Specification for Reflective Insulation for BuildingAp
9、plicationsE96/E96M Test Methods for Water Vapor Transmission ofMaterials2.2 NFPA Standards:NFPA 31 Standard for the Installation of Oil BurningEquipment3NFPA 54 National Fuel Gas Code3NFPA 211 Standard for Chimneys, Fireplaces, and Vents32.3 Code of Federal Regulations:16 CFR 460 Federal Trade Commi
10、ssion Trade RegulationRule: Labeling and Advertising of Home Insulation43. Terminology3.1 DefinitionsFor definitions of terms used in this prac-tice refer to Terminology C1683.2 Descriptions of Terms Specific to This Standard:3.2.1 applicatorthe person or persons who apply thermalinsulation material
11、s in buildings whether or not such person orpersons have contracted with the owner to perform the work.3.2.2 conditioned spaceany space in a building that isserved by a heating or cooling system.3.2.3 ownerthe person, partnership, corporation, agency,or other entity owning the building to be insulat
12、ed whethersuch ownership is by virtue of deed, contract, or any otherinstrument for acquiring legal title under the laws of the statein which the building is located.1This practice is under the jurisdiction of ASTM Committee C16 on ThermalInsulation and is the direct responsibility of Subcommittee C
13、16.21 on ReflectiveInsulation.Current edition approved May 1, 2012. Published June 2012. Originallyapproved in 1972. Last previous edition approved 2007 as C727 01(2007)1. DOI:10.1520/C0727-12.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at se
14、rviceastm.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.4Federal Register, Vol 70, No. 103. Available
15、 from Department of Housing andUrban Development, 451 7th St. N.W., Washington, D.C. 20410.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.2.4 reflective insulation systemthermal insulation con-sisting of one or more low emittance
16、surfaces, bounding one ormore enclosed air spaces.3.2.5 vapor retarderany material (membrane or paint)that has a water vapor permeance (perm) rating of 57 ng/(Pasm2) (1 perm) or less, in accordance with Test MethodsE96/E96M, using the desiccant method.4. Significance and Use4.1 This practice recogni
17、zes that effectiveness, safety, anddurability of reflective insulation depends not only on thequality of the insulating materials, but also on proper installa-tion.4.2 There is potential for reduced thermal effectiveness, firerisks and structural deterioration when the insulation is improp-erly inst
18、alled. Specific potential hazards from improper instal-lation include fires caused by (1) heat build-up in recessedlighting fixtures, and (2) deterioration in wood structures andpaint failure due to moisture accumulation.4.3 This practice provides procedures for the installation ofreflective insulat
19、ion in a safe and effective manner. Actualconditions in existing buildings vary greatly and in some casesadditional care must be taken to ensure safe and effectiveinstallation.4.4 This practice presents requirements that are general innature and practical. They are not intended as specific instal-la
20、tion instructions. The user shall consult the manufacturer forspecific applications/installations.5. Safety Precautions5.1 The applicator shall wear proper protective clothing,gloves, and eye protection when installing the insulation.6. Pre-Installation Inspection and Preparation6.1 In areas where i
21、nsulation is to be installed, componentsof the electrical system shall be in good condition. When theelectrical system is found to be faulty, proper inspection andrepair shall be accomplished. (See Note 1.)6.2 Inspect the roof, walls, ceilings, and floors to identifyareas where a previous or existin
22、g moisture problem hascaused paint peeling, warpage, stain, visible fungus growth,rotting, or other structural damage.6.2.1 Do not install insulation in such areas until the ownerhas been informed, and these conditions have been correctedand the cause of the condition repaired.6.3 Prior to installat
23、ion, provide proper attic ventilation andvapor retarders in accordance with building requirements orcodes. Install insulation in such a way as to ensure freemovement of air through all vents.NOTE 1The CPSC Product Safety Fact Sheet No. 185has identifiedthe following signs of potential electrical def
24、iciencies: lights dimming,fuses blowing, circuit breakers tripping frequently, electrical sparks andglowing from receptacles, lights flickering, and coverplates on switchesand outlets that are warm or hot to the touch.6.4 In the areas where insulation is to be installed, theapplicator shall locate a
25、nd plan for subsequent blocking aroundrecessed lighting fixtures, motors, fans, blowers, heaters, flues,chimneys, and other heat-producing electrical or mechanicaldevices.6.4.1 Securely fasten blocking, such as wood, metal, orunfaced mineral wool batts, around all heat-producing devicesto permanentl
26、y maintain the clearances specified in 6.4.2,6.4.3, or the exception in 6.4.4. Install all required blocking atleast as high as the height of the finished insulation and in amanner that ensures all devices that require maintenance orservicing remain accessible after the insulation is installed.6.4.2
27、 Install blocking to provide a minimum three inch (76mm) clearance around all sides of recessed lighting fixtures,unless such fixtures are approved for installation in directcontact with insulation, including fixture wiring compartmentsand ballasts and other heat-producing devices not covered withth
28、ermal insulation.6.4.3 The open area above heat producing devices must notbe covered, unless they are specifically approved devices foroperation when covered with thermal insulation.6.4.4 Install blocking around gas-fired appliances to providethe minimum clearances specified in NFPA-54. Install bloc
29、kingaround oil-fired appliances to provide the minimum clearancesspecified in NFPA-31. Install blocking around masonry chim-neys or masonry enclosing a flue to provide a minimum 2-in.(50-mm) clearance from the outside face of the masonry.Install blocking around vents, chimney, and vent connectorsand
30、 chimneys other than masonry chimneys to provide theminimum clearances specified in NFPA-211.7. Installation Guidelines7.1 The insulation material shall be handled in accordancewith manufacturers instructions and kept free of extraneousmaterials. The materials shall be kept dry and shall not be inco
31、ntact with the ground or other sources of water.7.2 Installation instructions per the manufacturer and localcodes shall be followed to ensure proper installation. Thethermal performance of reflective insulation is based on themaintenance of a totally enclosed air space adjacent to the lowemittance s
32、urface(s).7.3 The thermal performance of a reflective insulationdepends upon adherence to spacing requirements containedwithin the installation instuctions. When instructions for insu-lating undersize and oversize cavities is not provided themanufacturer shall be consulted.7.4 Damaged areas will res
33、ult in loss of performance andshall be repaired with low emittance material(s). Minor dam-age such as rips, tears, or punctures shall be repaired with lowemittance materials while larger damaged areas shall bereplaced with new reflective insulation. (See Note 2.)7.5 The thermal performance of a refl
34、ective insulation hasthe potential to be reduced by a corrosive environment.Reflective insulations shall not be installed in environmentsthat are corrosive to the low emittance surface.7.6 The thermal performance of a reflective insulation hasthe potential to be adversely affected by materials such
35、as dust,oil, or paint on the surfaces. These materials shall be removedduring installation taking care not to damage the insulation.5CPSC “Guide to Home Wiring Hazards”, available from the Consumer ProductSafety Commission, 1111 Eighteenth St. N.W., Washington, D.C. 20207.C727 1227.7 Moisture will a
36、ffect the thermal performance of thereflective insulation as long as it remains on the surface.Insulation shall be free of moisture at time of installation.7.8 It is important that reflective insulation be fitted closelyaround all non-heat producing components and taped toeliminate gaps or voids thr
37、ough which air, dust, or water vaporhas the potential to pass.7.9 Post-InstallationThe installer must provide a signedand dated statement describing the reflective insulation in-stalled, the area insulated, and the R-value of the installedsystem. (See Trade Regulation Rule 16 CFR 460.)NOTE 2Large da
38、maged areas are defined as those areas greater than 1ft2.8. Keywords8.1 building constructions; enclosed air space; insulationsystem; low emittance; metallic foil; reflective insulation;thermal insulating materialsASTM International takes no position respecting the validity of any patent rights asse
39、rted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by
40、 the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will recei
41、ve careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM Inter
42、national, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).C727 123
