ASTM C1263-95

Standard Test Method for Thermal Integrity of Flexible Water Vapor Retarders

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 150oF (-29 to 66oC). This test method does not cover mastics or barrier coatings applied in liquid form or materials intended for use as weather barriers.
1.2 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.

General Information

• Status: Historical
• Publication Date: 31-Dec-1999
• Technical Committee: C16 - Thermal Insulation
• Drafting Committee: C16.33 - Insulation Finishes and Moisture

Relations

• Replaced By: ASTM C1263-95(2000) - Standard Test Method for Thermal Integrity of Flexible Water Vapor Retarders
• Effective Date: 01-Jan-2000
• Referred By: ASTM C1775-22 - Standard Specification for Laminate Protective Jacket and Tape for Use over Thermal Insulation for Outdoor Applications
• Effective Date: 01-Jan-2000
• Referred By: ASTM C1916-21 - Standard Specification for Flexible Protective Jackets Made of Modified Asphalt/Butyl Rubber for Use over Thermal Insulation
• Effective Date: 01-Jan-2000
• Referred By: ASTM C1423-21 - Standard Guide for Selecting Jacketing Materials for Thermal Insulation
• Effective Date: 01-Jan-2000
• Referred By: ASTM C1136-23 - Standard Specification for Flexible, Low Permeance Vapor Retarders for Thermal Insulation
• Effective Date: 01-Jan-2000

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: C 1263 – 95
Standard Test Method for
Thermal Integrity of Flexible Water Vapor Retarders
This standard is issued under the fixed designation C 1263; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 5.3 Laboratory Freezer, capable of maintaining 6 3°F
(2°C) down to a temperature of − 20°F (−29°C).
1.1 This test method covers the visual determination of the
5.4 Room or Cabinet, capable of maintaining 73.4 6 3°F
thermal integrity of flexible water vapor retarders for those
(23 6 2°C) and 506 2 % relative humidity.
materials classified under Specification C 1136, including plas-
5.5 Insulated Gloves.
tic, foil, or paper and composites of two or more of these
materials to temperatures listed in the specification or purchase
6. Test Specimen
contract. The vapor retarders are intended for use at tempera-
6.1 From each sampled vapor retarder, test three 1 ft (305
tures of − 20 to 150°F (−29 to 66°C). This test method does not
mm) square specimens for each temperature extreme specified.
cover mastics or barrier coatings applied in liquid form or
materials intended for use as weather barriers.
7. Procedure
1.2 This standard does not purport to address all of the
7.1 Condition test specimen at a temperature of 73.46 3°F
safety concerns, if any, associated with its use. It is the
(23 6 2°C) and a relative humidity of 50 6 2 % for a period
responsibility of the user of this standard to establish appro-
of 24 h.
priate safety and health practices and determine the applica-
7.2 Expose the specimen and the mandrel to the test
bility of regulatory limitations prior to use.
temperatures of − 20 and 150°F (−29 and 66°C) for a period of
2. Referenced Documents 4h.
7.3 At the end of the exposure period, with specimen and
2.1 ASTM Standards:
mandrel at test temperatures, bend each specimen around the
C 168 Terminology Relating to Thermal Insulating Materi-
2 mandrel once through an angle of 180° in 3 6 2 s so that the
als
opposing sides are parallel. If the two surfaces of the test
C 1136 Specification for Flexible, Low Permeance Vapor
2 specimen are materially different, six specimens shall be tested
Retarders for Thermal Insulation
with three specimens of each surface tested on the outside of
3. Terminology the bend.
3.1 Definitions—Definitions of terms used in this test
NOTE 1—When test conditions specify both low temperature and high
method will be found in Terminology C 168.
temperature exposure conditions on the same vapor retarder, it is satis-
factory to use the same specimen or to select separate specimens for each
4. Significance and Use
of the exposed temperatures, unless the specification or contract explicitly
states that exposure tests must be conducted on the same specimen. If the
4.1 In many applications, the vapor retarders used on a
latter is so, the test specimen must be reconditioned before submitting it
thermal insulation will be exposed to the temperatures listed in
to the next test temperature.
7.2. Cracking or delamina
...