1、Designation: E 2321 03Standard Practice forUse of Test Methods E96for Determining the Water VaporTransmission (WVT) of Exterior Insulation and FinishSystems (EIFS)1This standard is issued under the fixed designation E 2321; the number immediately following the designation indicates the year oforigin
2、al adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This standard describes how to use Test Methods E96todetermine t
3、he water vapor transmission (WVT) characteristicsof an EIFS sample.1.2 An Exterior Insulation and Finish System (EIFS) is amultilayer exterior building wall material that consists of anumber of layers. For the purpose of this standard, these layers,whether they be individual EIFS component materials
4、 in singlelayers, or groups of EIFS component materials, are called the“EIFS sample.”1.3 The Water Method, Procedures B and D described insection X1.1.2 and X1.1.5 of Appendix X1 of Test MethodsE96shall be used in this standard.1.4 This standard is limited to specimens not over 114 in.(32 mm) in thi
5、ckness, except as provided in Section 9 of thisstandard.1.5 The values stated in inch-pound units are to be regardedas the standard. Metric inch-pound conversion factors for watervapor transmission, permeance, and permeability are stated inTable 1 of Test Methods E96. All conversions of mm Hg to Paa
6、re made at a temperature of 0C.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 limitatio
7、ns prior to use.2. Referenced Documents2.1 ASTM Standards:2C 1397 Practice for Application of Class PB Exterior Insu-lation and Finish SystemsE96 Test Methods for Water Vapor Transmission of Mate-rialsE 631 Terminology of Building ConstructionsE2110 Terminology for Exterior Insulation and Finish Sys
8、-tems (EIFS)3. Terminology3.1 For definitions of general terms relating to:3.1.1 Water vapor transmission of materials, see Test Meth-ods E96.3.1.2 Building construction, see Terminology E 631.3.1.3 EIFS, see Terminology E2110.4. Summary of Practice4.1 This standard describes how to determine the wa
9、tervapor transmission (WVT) of the EIFS sample, using the WaterMethod, Procedures B and D, of Test Methods E96.IntheWater Method, the dish or tray contains distilled water, and thewater vapor passes through the test specimen from the inside ofthe dish to the chamber is which the specimen is containe
10、d.Eventually the rate of vapor flow stabilizes, and by weightingthe change in weight over time, the water vapor transmission ofthe EIFS sample can be calculated.4.1.1 For both Procedures, three specimens shall be used.4.1.1.1 Procedure B shall be used for specimens that inactual use on a building wo
11、uld have the higher humidity on theindoor side of the wall.4.1.1.2 Procedure D shall be used, for specimens that inactual use on a building would have the higher humidity on theoutdoor side of the wall.5. Significance and Use5.1 The purpose of this test is to obtain steady state valuesof water vapor
12、 transfer through the EIFS sample. This charac-teristic of EIFS is commonly requested by regulatory anddesign organizations, and is used in thermal and moisture1This practice is under the jurisdiction of ASTM Committee E06 on Perfor-mance of Buildings and is the direct responsibility of Subcommittee
13、 E06.58 onExterior Insulation and Finish Systems (EIFS).Current edition approved Nov. 1, 2003. Published November 2003.2For 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
14、to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.studies of building walls. The degree to which an EIFS allowswater vapor to pass through it can affect the performance of anEIF
15、S wall assembly.5.2 A permeance value obtained under one set of testconditions does not indicate the value under a different set ofconditions. For this reason, the test conditions selected arethose that most closely approach the conditions of use for EIFScomponents and assemblies.5.3 This standard s
16、hould not be used alone as the sole meansfor evaluating the water vapor transmission characteristics of agiven EIFS wall assembly. Other methods are available, andshould be considered and used as appropriate.5.4 To be meaningful in evaluating the thermal and moisturecondition of a given EIFS wall as
17、sembly, the specimens used inthis standard should represent closely the materials that actu-ally exist, or will exist, on a given building.6. Apparatus6.1 The apparatus shall be as described in Test MethodsE96, sections 6.1, 6.2, and 6.3. The Water Method, ProceduresB and D, shall be used; the Desic
18、cant Method shall not be used.6.2 For specimens that include the thermal insulation board,the apparatus shall be a pan 1112 by 1112 in. (29 by 29 cm)square, as described in Figure X2.1 of Test Methods E96.6.3 For specimens that do not include the thermal insula-tion, the apparatus shall be a dish 4
19、in. (10 cm) in diameter, asdescribed in Figure X2.2 of Test Methods E96.7. Materials7.1 The materials used for determining the water vaportransmission (WVT) of EIFS components or combinations ofcomponents shall be as described in Test Methods E96,Section 7.8. Sampling8.1 Materials used for determini
20、ng the water vapor trans-mission of EIFS components or assemblies shall be sampled asdescribed in Section 8 of Test Methods E96.9. Test Specimen9.1 Test specimens for EIFS components or assemblies shallbe constructed as Section 9 of Test Methods E96, except asmodified below:9.1.1 Test specimens of t
21、he EIFS sample shall be individualEIFS components (finish, reinforced basecoat or thermal insu-lation board), or combinations of individual EIFS components(for example, reinforced basecoat and finish, with the finishapplied to the basecoat; or thermal insulation board with thereinforced basecoat app
22、lied to it; and so forth).9.1.2 As a minimum, all test specimens shall be allowed toequilibrate by placing the test specimen in a controlled constantenvironmental chamber at the temperature and relative humid-ity settings for 168 h (7 days).NOTE 1If specimens include thermal insulation board, time f
23、orstabilization of water vapor flow will be longer than the specimen withEIFS coatings alone.9.1.2.1 To determine the water vapor transmission, threespecimens each of Procedure B and Procedure D shall be used.9.1.3 All specimens shall have their thickness measured inaccordance with 14.1.1 of Test Me
24、thods E96.10. Attachment of Specimen to Test Dish10.1 Test specimens for EIFS components or assembliesshall be attached to the test dish by sealing as specified in TestMethods E96, Section 10. (WarningThe sealant around theedge of the specimen in the pan or dish, must not be absorbedinto porous mate
25、rial, if any, contained in the specimen itself.)11. Test Procedure11.1 The test procedure shall be as described in TestMethods E96, Section 12, the Water Method, Procedures Band D.12. Calculation and Analysis of Results12.1 Results of the rate of water vapor transmission (WVT)shall be determined and
26、 reported as specified in Section 13 ofTest Methods E96.13. Report13.1 The report shall include the following:13.1.1 Identification of the EIFS component or combina-tions of components tested.13.1.1.1 All wet-applied materials shall be identified by theEIFS manufacturers name, product name, and thei
27、r thickness.13.1.1.2 Specimens that include reinforcing mesh shallidentify the reinforcing mesh by the EIFS manufacturersname, product name, and weight per unit area.13.1.1.3 Specimens that include thermal insulation boardshall identify the thermal insulation board by thickness, type,and density.13.
28、1.2 Thickness of Specific Materials:13.1.2.1 To measure thickness, test specimens shall be cutwith a diamond saw from larger pieces of the EIFS from whichthe EIFS sample was obtained. Thickness shall be measuredusing a microscope, optical comparator or a14-in. (0.6-cm)diameter spherical head microme
29、ter. Thickness shall be mea-sured in accordance with Section 9 of Test Methods E96.(1) For finish coat thickness measurement, a microscope oroptical comparator shall be used.(2) For components other than the finish coat, when amicrometer is used, thickness shall be measured in accordancewith section
30、 9.5 of Test Methods E96.13.1.3 A drawing describing how the EIFS component orcombination of components was configured for the test for bothProcedure B and Procedure D shall be provided. The drawingshall indicate the direction of vapor flow.13.1.4 Items 14.1.1 through 14.1.10 of Section 14 in TestMe
31、thods E96shall be included in the report.14. Precision and Bias14.1 Precision and bias for determination of the rate ofwater vapor transmission (WVT) as specified in this standardpractice shall be established per Section 15, Test Methods E96.15. Keywords15.1 ASTM Test Methods E96; condensation; EIFS
32、; exte-rior insulation and finish system; finish; insulation; moisture;E2321032permeability; permeance; reinforced basecoat; reinforcing mesh; water vapor; water vapor transmission; WVTASTM International takes no position respecting the validity of any patent rights asserted in connection with any i
33、tem 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 the responsible technical co
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35、 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 International, 100 Barr Harbor Dri
36、ve, 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).E2321033
