ASTM C1263-95(2005)e1
(Test Method)Standard Test Method for Thermal Integrity of Flexible Water Vapor Retarders
Standard Test Method for Thermal Integrity of Flexible Water Vapor Retarders
SIGNIFICANCE AND USE
In many applications, the vapor retarders used on a thermal insulation will be exposed to the temperatures listed in 7.2. Cracking or delamination of the retarder under these conditions would, in most cases, cause it to lose its effectiveness as a vapor retarder material.
SCOPE
1.1 This test method covers the visual determination of the thermal integrity of flexible water vapor retarders for those materials classified under Specification C1136, including plastic, foil, or paper and composites of two or more of these materials to temperatures listed in the specification or purchase contract. The vapor retarders are intended for use at temperatures of − 20 to 150°F (−29 to 66°C). This test method does not cover mastics or barrier coatings applied in liquid form or materials intended for use as weather barriers.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 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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´1
Designation:C1263–95(Reapproved 2005)
Standard Test Method for
Thermal Integrity of Flexible Water Vapor Retarders
This standard is issued under the fixed designation C1263; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
´ NOTE—A units statement (1.2) was editorially added in March 2010.
1. Scope 7.2. Cracking or delamination of the retarder under these
conditions would, in most cases, cause it to lose its effective-
1.1 This test method covers the visual determination of the
ness as a vapor retarder material.
thermal integrity of flexible water vapor retarders for those
materials classified under Specification C1136, including plas-
5. Apparatus
tic, foil, or paper and composites of two or more of these
5.1 1 in. (25 mm) Outside Diameter Solid, Mild Steel
materialstotemperatureslistedinthespecificationorpurchase
Mandrel.
contract. The vapor retarders are intended for use at tempera-
5.2 Laboratory Oven, capable of maintaining 63°F (2°C)
turesof−20to150°F(−29to66°C).Thistestmethoddoesnot
up to a temperature of 150°F (66°C).
cover mastics or barrier coatings applied in liquid form or
5.3 Laboratory Freezer,capableofmaintaining 63°F(2°C)
materials intended for use as weather barriers.
down to a temperature of−20°F (−29°C).
1.2 The values stated in inch-pound units are to be regarded
5.4 Room or Cabinet, capable of maintaining 73.4 6 3°F
as standard. The values given in parentheses are mathematical
(23 6 2°C) and 50 6 2% relative humidity.
conversions to SI units that are provided for information only
5.5 Insulated Gloves.
and are not considered standard.
1.3 This standard does not purport to address all of the
6. Test Specimen
safety concerns, if any, associated with its use. It is the
6.1 From each sampled vapor retarder, test three 1 ft (305
responsibility of the user of this standard to establish appro-
mm)squarespecimensforeachtemperatureextremespecified.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
7. Procedure
7.1 Condition test specimen at a temperature of 73.4 6 3°F
2. Referenced Documents
(23 6 2°C) and a relative humidity of 50 6 2% for a period
2.1 ASTM Standards:
of 24 h.
C168 Terminology Relating to Thermal Insulation
7.2 Expose the specimen and the mandrel to the test
C1136 Specification for Flexible, Low Permeance Vapor
temperatures of−20 and 150°F (−29 and 66°C) for a period of
Retarders for Thermal Insulation
4h.
3. Terminology 7.3 At the end of the exposure period, with specimen and
mandrel at test temperatures, bend each specimen around the
3.1 Definitions—Definitions of terms used in this test
mandrel once through an angle of 180° in 3 6 2 s so that the
method will be found in Terminology C168.
opposing sides are parallel. If the two surfaces of the test
4. Significance and Use specimenaremateriallydifferent,sixspecimensshallbetested
with three specimens of each surface tested on the outside of
4.1 In many applications, the vapor retarders used on a
the bend.
thermal insulation will be exposed to the temperatures listed in
NOTE 1—When test conditions specify both low temperature and high
temperature exposure conditions on the same vapor retarder, it is satis-
Thistestmethodisunderthejurisdic
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