1、Designation: C1642 14Standard Practice forDetermining Air Leakage Rates of Aerosol Foam Sealantsand Other Construction Joint Fill and Insulation Materials1This standard is issued under the fixed designation C1642; the number immediately following the designation indicates the year oforiginal adoptio
2、n 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. Scope*1.1 This practice is intended to determine the air leakagerate of aerosol foam
3、 sealants as measured in a standardized jig.This practice provides a procedure for preparing the testapparatus and further describes the application of aerosol foamsealant and other joint fillers to the apparatus prior to conduct-ing Test Method E283.1.2 This practice allows testing laboratories to
4、quantify theair leakage rate of aerosol foam sealants or joint fillingproducts using Test Method E283 and reporting the data inL/(s m2) according to Practice E29.1.3 This practice is used in conjunction with Test MethodE283. Although Test Method E283 is a laboratory test methodused with fenestration
5、 products, individuals interested in per-forming field air leakage tests on installed units shouldreference Test Method E783 and AAMA 502.1.4 Aerosol foam sealants are used for a variety of end useapplications generally intended to reduce air leakage in thebuilding envelope.1.5 Insulating type mater
6、ials also will be found suitable forevaluation with this practice.1.6 There are no other known practices or test methods thatspecify the preparation of the assemblies used to determine theair leakage rate of gap filling sealants, dry preformed foams orinsulations.1.7 The values given in SI units are
7、 the standard. Theinch-pound units in parentheses are for information only.1.8 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 determin
8、e the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C717 Terminology of Building Seals and SealantsC1330 Specification for Cylindrical Sealant Backing for Usewith Cold Liquid-Applied SealantsC1536 Test Method for Measuring the Yield for AerosolFoam
9、SealantsC1620 Specification for Aerosol Polyurethane and AerosolLatex Foam SealantsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE283 Test Method for Determining Rate of Air LeakageThrough Exterior Windows, Curtain Walls, and DoorsUnder Specified P
10、ressure Differences Across the Speci-menE783 Test Method for Field Measurement of Air LeakageThrough Installed Exterior Windows and Doors2.2 Other Standards:AAMA 502 Voluntary Specification for Field Testing ofNewly Installed Fenestration Products3ISO/IEC 17025 General requirements for the competenc
11、e oftesting and calibration laboratories43. Terminology3.1 Definitions:3.1.1 air barrierthe assembly of material(s) used in build-ing construction to reduce or retard the uncontrolled passage ofair into and out of the building.3.1.2 exfiltrationair flow direction from building interiortoward exterio
12、r.3.1.3 infiltrationair flow direction from building exteriortoward interior.1This practice is under the jurisdiction of ASTM Committee C24 on BuildingSeals and Sealants and is the direct responsibility of Subcommittee C24.61 onAerosol Foam Sealants.Current edition approved Sept. 15, 2014. Published
13、 November 2014. Originallyapproved in 2007. Last previous edition approved in 2007 as C1642-07. DOI:10.1520/C1642-14.2For 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
14、 the standards Document Summary page onthe ASTM website.3Available from American Architectural Manufacturers Association (AAMA),1827 Walden Office Square, Suite 550, Schaumburg, IL 60173-4268, http:/www.aamanet.org.4Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floo
15、r, New York, NY 10036, http:/www.ansi.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.1.4 preformed dry foam materialany cellular productdesigned for filling const
16、ruction joints to resist air leakage.3.1.5 preformed pre-compressed tapesany cellular tapesupplied compressed from its fully expanded shape and de-signed for filling construction joints to resist air leakage.3.1.6 rough opening gapthe open space between thebuilding frame and the fenestration product
17、.3.1.7 test effective areais located at and comprised of gapsbetween aluminum rectangular tubing with each gap havingdimensions of 9.5-mm (0.375-in.) by 864-mm (34-in.) long. Asingle gap area is 0.008 m2(12.75 in.2). The total effective areaof all five gaps is 0.041 m2(63.8 in.2).4. Summary of Pract
18、ice4.1 This practice establishes specimen preparation and a testprotocol for determining the air leakage rates of aerosol foamsealants per Test Method E283. Calibration of the air leakagetest equipment shall be performed by ISO 17025 calibrationprovider than can validate the flow meter accuracy of 6
19、1%ofreading in the range of 0.05 to 0.02 cfm. Application of foamsealant shall be in accordance with all manufacturers recom-mendations and in a manner reflecting in use conditions such asthe depth and width of the joint or gap. In the event that themanufacturers instructions are not available, this
20、 practice shallbe the default application method for the test material (jointwidth and depth). The depth and density (use Test MethodC1536 for aerosol foam sealant) of the applied material shall bereported in all cases.NOTE 1Apply according to manufacturers recommendations whichmay include a water s
21、pray to surfaces or other special surface preparation.4.2 This practice references the following material types:4.2.1 Type I Material (Aerosol Foam Sealants)A) PolyurethaneB) Latex4.2.2 Type II Material (Preformed dry material)A) Closed cell foamB) Bi-cellular foam4.2.3 Type III Material (Batt-Insul
22、ation)A) FacedB) Un-Faced5. Significance and Use5.1 This practice is intended to measure air flow throughmaterials used to fill joints found in building construction.5.2 This practice does not purport to establish all requiredcriteria for the selection of an air barrier assembly. Therefore,the resul
23、ts should be used only for comparison purposes andshould not be seen as the equivalent to field installed buildingsystems.6. Sampling6.1 One test jig shall be required for each material type.7. Test Apparatus7.1 The jig required for testing is shown in Fig. 1 and Fig.2.NOTE 2See Annex A1 for the det
24、ailed construction and assemblydetails of the test apparatus.8. Sample Preparation8.1 General DescriptionThe test sample is a jig contain-ing five air permeability test areas that consist of joint gapsbetween aluminum rectangular tubing sections with eachhaving the following dimensions: 9.525-mm (0.
25、375-in.) wideby 863.6-mm (34-in.) long by 101.6-mm (4-in.) deep.NOTE 3Cavity length is the distance between the 0.375-in. thickspacer at each end. The extrusions are enclosed by a wooden buck framecomprised of 50.8 by 152.4-mm (2 by 6-in.) dimension lumber (SeeAnnex A1 drawings).8.2 The buck shall b
26、e sealed at all extraneous points withsilicon and butyl tape or other appropriate material. This sealshall extend across the termination joint between aluminumtube and the wood buck surround. During assembly of the testspecimen, silicon sealant should be applied to both planar facesof the 50.8 by 10
27、1.6-mm (2 by 4-in.) aluminum spacersbetween aluminum rectangular tubing. This will prevent airleakage at spacer locations. The areas within the wood buckthat include the aluminum spacers are blocked during testing.This can be done by filling the gap between aluminumrectangular tubing with sealant an
28、d covering with impermeablematerial such as weather resistant tape. See drawings.8.3 Applying the Test Material in the Jig:FIG. 1 An Assembled Test Jig Apparatus Ready for Joint Fillingwith a Perimeter Seal Applied in the Wood Test BuckC1642 1428.3.1 Foam Sealant ApplicaionThe foam may be appliedin
29、multi passes as desired.Approximately one half of the cavitydepth should be filled on the first pass and allowed to cure untilthe surface is tack free (see Specification C1620 for definition).A sharp knife should be used to trim the foam. Do not attemptto trim the foam until it has cured for 24 h. I
30、t is not necessaryto trim the cured foam on the exterior side of the joint, howeverthe inside face should be trimmed flush with the aluminum ifthe foam expands beyond the surface.NOTE 4Only one pass or more than two passes is required to fully fillthe cavities. Enter this information as a note in th
31、e test report. UseStandard Laboratory Conditions for sample preparation and cure of thefoam sealant.8.3.2 Pre-formed Foam ApplicationCut a continuouslength of Type II material measuring 12.7 mm (12 in.) longerthan the channel length. Align the cut length with the channelgap to be filled. Carefully u
32、se a blunt or round device to pushthe aligned material into the total length of the 9.525-mm(0.375-in.) gap. If material is punctured, cut, or otherwisedamaged during insertion, it shall be removed, discarded, andreplaced with a new length of material. Since by design, the cutmaterial length is slig
33、htly longer, the ends should be com-pressed on both ends to provide a tight fit against the spacersand channels. The inserted material (1) shall be between thechannel with no visible material protruding to either theinterior or the exterior sides, (2) shall provide a continuouscontact surface betwee
34、n the channels and spacers, and (3) shallbe positioned at the same depth in the channel with a varianceof 66.35 mm (0.25 in.). This procedure applies for eachadditional continuous length that is positioned in the channel.Reported information shall include the depth of the materialinto the joint, mat
35、erial cross-sectional dimensions prior toinsertion, number of pieces if more than one length of foam isused, length of each piece, and type and class of material,(Type shall be bi-cellular or closed cell per Terminology C717.Class would be C, closed cell or B, bi-cellular per SpecificationC1330 or o
36、ther).8.3.3 Batt Material InstallationCut a continuous length ofType III material measuring 88.9 mm (3.5 in.) by 19.05 mm(0.75 in.) by 1177.73 mm (45.38 in.). The batt material lengthis 25.4 mm (1.0 in.) longer than the aluminum channel. Alignthe cut length with the channel gap to be filled. Careful
37、ly usea blunt or round device to push the aligned material into thetotal length of the 9.525-mm (0.375-in.) gap. Ensure specimencompletely fills the cavity with no visible material protrudingto either the interior or the exterior sides.9. Test Procedure9.1 Air Leakage:9.1.1 The Test Method E283 extr
38、aneous leakage measure-ment is performed with all test areas blocked. Followingextraneous leakage, each of the five gaps is tested indepen-dently of the other gaps. Gaps which are not included in airleakage are blocked with weather-resistant tape. Following theNOTE 1All five (5) test area gaps are s
39、hown and filled with test sample foam sealant. Blocked areas are not included for air leakage test.FIG. 2 Specimen Mounted into Wood Surround (test buck) View from Interior Side.C1642 143individual gap leakage tests, conduct a leakage test with all fivegaps exposed simultaneously.9.1.2 The air leaka
40、ge testing procedure shall be conductedin accordance with Test Method E283. A minimum pressuredifferential of 75 Pa is required when testing air barrierproducts and aerosol foam sealants. Higher test pressures maybe necessary for air leakage evaluation of aerosol foam sealantswhen implemented with f
41、enestration products (window,storefront, curtain wall, doors).9.1.3 ResultsThe rate of air leakage for both exfiltrationand infiltration shall be reported as: litres/second/square meter,that is, L/s/m2) (ft3/min /ft2) and litres/second/linear metre, thatis, L/s/m (ft3/min/ft).NOTE 5The interior side
42、 of test specimen has the 1.5-in. recessbetween the buck mounting surface and the aluminum rectangular tubing.10. Calculation10.1 The total air leakage rate (Qs) for the test specimenshall be expressed in terms of airflow at standard conditionsusing the following equations:Qs 5 Qt/Aair leakage in te
43、rms of cfm per surface area of one joint.Algebraic sum of all five joints leakage rate is the total airleakage based on surface area for all test joints.Ql 5 Qt/lair leakage in terms of cfm per one joint length. Algebraicsum of all five joints is the total air leakage in terms of totallength of all
44、joints.where:G1 = a single gap surface area is 0.008 m2(12.75 in.2)G5 = the total surface area of all five gaps is 0.041 m2(63.8in.2)Qs = air leakage rate for test specimen, L/s/m2(ft3/min/ft2)of gap surface areaQl = air leakage rate for test specimen, L/s/m (ft3/min/ft) ofgap lengthQt = net Test Me
45、thod E283 air leakage test resultA = surface area of one joint gap: 0.00822 m2(0.089 ft2)l = length of one specimen joint: 0.864 m (2.83 ft)11. Report11.1 General Requirements:11.1.1 Complete product name and model number of prod-uct tested,11.1.2 Manufacturers name,11.1.3 Manufactured date or expir
46、ation date, or both, whenprovided,11.1.4 Test initiation date,11.1.5 The number of foam beads or number of strips orpieces used, or both, to fill the jig,11.1.6 Label net weight if provided, and11.1.7 Specify depth and size of preformed foam specimensused to fill the jig apparatus.11.2 A statement i
47、ndicating that the test method used was inaccordance with ASTM C1642.11.3 The test pressure and results of the air leakage rate tobe reported in units of L/s/m2(fm3/min/ft2) and L/s/m (ft3/min/ft)11.4 Test results to include test specimen joint surface areaand joint length for each test joint and to
48、tal area11.5 Test results include leakage for each joint and totalleakage of all five joints.11.6 Any modifications or deviations from this practiceshould be reported.12. Precision and Bias12.1 The precision and bias of this practice has not beendetermined.13. Keywords13.1 aerosol; aerosol foam; air
49、 barrier; air barrier foamsealant; air exfiltration; air infiltration; air leakage; air perma-nence; door; fenestration; insulation materials; latex foamsealant; polyurethane foam sealant; windowANNEXA1. CONSTRUCTION AND ASSEMBLYA1.1 Detailed Construction Drawings for the Test Appa-ratus (Test Buck):A1.1.1 See Figs. A1.1-A1.3.A1.2 Construction of the Test Buck:A1.2.1 Materials List for Building Test Buck:(1) Two pieces of nominal 2 by 6-in. dimension lumberwith dimensions of 38 mm (1.5 in.) by 140 mm (5.5 in.) by2438 mm (8 ft).(2) One piece stock pine.
