ASTM E2321-03
(Practice)Standard Practice for Use of Test Methods E 96 for Determining the Water Vapor Transmission (WVT) of Exterior Insulation and Finish Systems (EIFS)
Standard Practice for Use of Test Methods E 96 for Determining the Water Vapor Transmission (WVT) of Exterior Insulation and Finish Systems (EIFS)
SIGNIFICANCE AND USE
The purpose of this test is to obtain steady state values of water vapor transfer through the EIFS sample. This characteristic of EIFS is commonly requested by regulatory and design organizations, and is used in thermal and moisture studies of building walls. The degree to which an EIFS allows water vapor to pass through it can affect the performance of an EIFS wall assembly.
A permeance value obtained under one set of test conditions does not indicate the value under a different set of conditions. For this reason, the test conditions selected are those that most closely approach the conditions of use for EIFS components and assemblies.
This standard should not be used alone as the sole means for evaluating the water vapor transmission characteristics of a given EIFS wall assembly. Other methods are available, and should be considered and used as appropriate.
To be meaningful in evaluating the thermal and moisture condition of a given EIFS wall assembly, the specimens used in this standard should represent closely the materials that actually exist, or will exist, on a given building.
SCOPE
1.1 This standard describes how to use Test Methods E 96 to determine the water vapor transmission (WVT) characteristics of an EIFS sample.
1.2 An Exterior Insulation and Finish System (EIFS) is a multilayer exterior building wall material that consists of a number of layers. For the purpose of this standard, these layers, whether they be individual EIFS component materials in single layers, or groups of EIFS component materials, are called the "EIFS sample."
1.3 The Water Method, Procedures B and D described in section X1.1.2 and X1.1.5 of Appendix X1 of Test Methods E 96 shall be used in this standard.
1.4 This standard is limited to specimens not over 11/4 in. (32 mm) in thickness, except as provided in Section 9 of this standard.
1.5 The values stated in inch-pound units are to be regarded as the standard. Metric inch-pound conversion factors for water vapor transmission, permeance, and permeability are stated in Table 1 of Test Methods E 96. All conversions of mm Hg to Pa are made at a temperature of 0°C.
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation:E2321–03
Standard Practice for
Use of Test Methods E96/E96M for Determining the Water
Vapor Transmission (WVT) of Exterior Insulation and Finish
Systems (EIFS)
This standard is issued under the fixed designation E2321; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope E631 Terminology of Building Constructions
E2110 Terminology for Exterior Insulation and Finish Sys-
1.1 This standard describes how to use Test Methods
tems (EIFS)
E96/E96M to determine the water vapor transmission (WVT)
characteristics of an EIFS sample.
3. Terminology
1.2 An Exterior Insulation and Finish System (EIFS) is a
3.1 For definitions of general terms relating to:
multilayer exterior building wall material that consists of a
3.1.1 Water vapor transmission of materials, see Test Meth-
numberoflayers.Forthepurposeofthisstandard,theselayers,
ods E96/E96M.
whether they be individual EIFS component materials in single
3.1.2 Building construction, see Terminology E631.
layers, or groups of EIFS component materials, are called the
3.1.3 EIFS, see Terminology E2110.
“EIFS sample.”
1.3 The Water Method, Procedures B and D described in
4. Summary of Practice
section X1.1.2 and X1.1.5 of Appendix X1 of Test Methods
4.1 This standard describes how to determine the water
E96/E96M shall be used in this standard.
vaportransmission(WVT)oftheEIFSsample,usingtheWater
1.4 This standard is limited to specimens not over 1 ⁄4 in.
Method, Procedures B and D, of Test Methods E96/E96M.In
(32 mm) in thickness, except as provided in Section 9 of this
the Water Method, the dish or tray contains distilled water, and
standard.
the water vapor passes through the test specimen from the
1.5 The values stated in inch-pound units are to be regarded
inside of the dish to the chamber is which the specimen is
asthestandard.Metricinch-poundconversionfactorsforwater
contained. Eventually the rate of vapor flow stabilizes, and by
vapor transmission, permeance, and permeability are stated in
weighting the change in weight over time, the water vapor
Table1ofTestMethodsE96/E96M.AllconversionsofmmHg
transmission of the EIFS sample can be calculated.
to Pa are made at a temperature of 0°C.
4.1.1 For both Procedures, three specimens shall be used.
1.6 This standard does not purport to address all of the
4.1.1.1 Procedure B shall be used for specimens that in
safety concerns, if any, associated with its use. It is the
actual use on a building would have the higher humidity on the
responsibility of the user of this standard to establish appro-
indoor side of the wall.
priate safety and health practices and determine the applica-
4.1.1.2 Procedure D shall be used, for specimens that in
bility of regulatory limitations prior to use.
actual use on a building would have the higher humidity on the
outdoor side of the wall.
2. Referenced Documents
2.1 ASTM Standards:
5. Significance and Use
C1397 Practice for Application of Class PB Exterior Insu-
5.1 The purpose of this test is to obtain steady state values
lation and Finish Systems (EIFS) and EIFS with Drainage
of water vapor transfer through the EIFS sample. This charac-
E96/E96M Test Methods for Water Vapor Transmission of
teristic of EIFS is commonly requested by regulatory and
Materials
design organizations, and is used in thermal and moisture
studies of building walls. The degree to which an EIFS allows
This practice is under the jurisdiction of ASTM Committee E06 on Perfor-
water vapor to pass through it can affect the performance of an
mance of Buildings and is the direct responsibility of Subcommittee E06.58 on
EIFS wall assembly.
Exterior Insulation and Finish Systems (EIFS).
5.2 A permeance value obtained under one set of test
Current edition approved Nov. 1, 2003. Published November 2003. DOI:
10.1520/E2321-03.
conditions does not indicate the value under a different set of
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
conditions. For this reason, the test conditions selected are
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
those that most closely approach the conditions of use for EIFS
Standards volume information, refer to the standard’s Document Summary page on
components and assemblies.
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
E2321–03
5.3 Thisstandardshouldnotbeusedaloneasthesolemeans Methods E96/E96M, Section 10. (Warning—The sealant
for evaluating the water vapor transmission characteristics of a around the edge of the specimen in the pan or dish, must not be
given EIFS wall assembly. Other methods are available, and absorbed into porous material, if any, contained in the speci-
should be considered and used as appropriate. men itself.)
5.4 Tobemeaningfulinevaluatingthethermalandmoisture
11. Test Procedure
conditionofagivenEIFSwallassembly,thespecimensusedin
this standard should represent closely the materials that actu-
11.1 The test procedure shall be as described in Test
ally exist, or will exist, on a given building.
Methods E96/E96M, Section 12, the Water Method, Proce-
dures B and D.
6. Apparatus
6.1 The apparatus shall be as described in Test Methods 12. Calculation and Analysis of Results
E96/E96M, sections 6.1,
...
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