ASTM_C_1136_-_17.pdf

Designation:C113617Standard Specification forFlexible,Low Permeance Vapor Retarders for ThermalInsulation1This standard is issued under the fixed designation C1136;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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This specification covers vapor retarders for thermalinsulation,specifically,flexible materials with permeance of0.10 perm or lower and surface burning characteristics of 25flame spread/50 smoke or lower.These materials are intendedfor use at surface temperatures of 20 to 150F(29 to 66C).It does not cover mastics or barrier coatings applied in liquidform,nor materials intended for use as weather barriers.1.2 This is a material specification and does not imply thatan installed system using these materials will provide thephysical properties specified in Section 6.1.3 This specification provides physical requirements forvapor retarders.Practice C755 provides assistance in solvingproblems related to moisture vapor transmission through ther-mal insulation materials.1.4 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.1.5 The following precautionary caveat pertains to the testmethods portion only,Section 10,of this specification:Thisstandard does not purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2C168 Terminology Relating to Thermal InsulationC755 Practice for Selection of Water Vapor Retarders forThermal InsulationD774/D774M Test Method for Bursting Strength of Paper(Withdrawn 2010)3C1258 Test Method for Elevated Temperature and HumidityResistance of Vapor Retarders for InsulationC1263 Test Method for Thermal Integrity of Flexible WaterVapor RetardersC1338 Test Method for Determining Fungi Resistance ofInsulation Materials and FacingsD828 Test Method for Tensile Properties of Paper andPaperboard Using Constant-Rate-of-ElongationApparatusD882 Test Method for Tensile Properties of Thin PlasticSheetingD1204 Test Method for Linear Dimensional Changes ofNonrigid Thermoplastic Sheeting or Film at ElevatedTemperatureD3285 Test Method for Water Absorptiveness of Nonbibu-lous Paper and Paperboard(Cobb Test)(Withdrawn2010)3E84 Test Method for Surface Burning Characteristics ofBuilding MaterialsE96/E96M Test Methods for Water Vapor Transmission ofMaterials2.2 TAPPI Standards:T461 Flame Resistance of Treated Paper and Paperboard3.Terminology3.1 DefinitionsDefinitions in Terminology C168 apply toterms used in this specification.1This specification is under the jurisdiction of ASTM Committee C16 onThermal Insulation and is the direct responsibility of Subcommittee C16.33 onInsulation Finishes and Moisture.Current edition approved May 15,2017.Published May 2017.Originallyapproved in 1990.Last previous edition approved in 2016 as C1136 16.DOI:10.1520/C1136-17.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 4.Classification4.1 Classification of vapor retarders,with the exception ofType IX,is based on physical properties.4.1.1 TypeIX,inadditiontophysicalpropertyrequirements,has specific structural requirements.4.2Physical property requirements are listed in Table 1.5.Materials and Manufacture5.1 Vapor retarders,with the exception of Type IX,areconstructed of various films,metallic foils,fabrics,papers andreinforcements,alone or in combination as a lamination.5.2 Metallic foils,the most comm