ASTM C1263-95(2005)

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 C 1136, 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 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-Oct-2005
• ICS: 91.100.50 - Binders. Sealing materials
• Technical Committee: C16 - Thermal Insulation
• Drafting Committee: C16.33 - Insulation Finishes and Moisture

Relations

• Replaces: ASTM C1263-95(2000) - Standard Test Method for Thermal Integrity of Flexible Water Vapor Retarders
• Effective Date: 01-Nov-2005
• Replaced By: ASTM C1263-95(2005)e1 - Standard Test Method for Thermal Integrity of Flexible Water Vapor Retarders
• Effective Date: 01-Nov-2005
• Referred By: ASTM C1775-22 - Standard Specification for Laminate Protective Jacket and Tape for Use over Thermal Insulation for Outdoor Applications
• Effective Date: 01-Nov-2005
• 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-Nov-2005
• Referred By: ASTM C1136-23 - Standard Specification for Flexible, Low Permeance Vapor Retarders for Thermal Insulation
• Effective Date: 01-Nov-2005
• Referred By: ASTM C1423-21 - Standard Guide for Selecting Jacketing Materials for Thermal Insulation
• Effective Date: 01-Nov-2005

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information.
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.
1. Scope 5. Apparatus
1.1 This test method covers the visual determination of the 5.1 1 in. (25 mm) Outside Diameter Solid, Mild Steel
thermal integrity of flexible water vapor retarders for those Mandrel.
materials classified under Specification C1136, including plas- 5.2 Laboratory Oven, capable of maintaining 63°F (2°C)
tic, foil, or paper and composites of two or more of these up to a temperature of 150°F (66°C).
materialstotemperatureslistedinthespecificationorpurchase 5.3 Laboratory Freezer,capableofmaintaining 63°F(2°C)
contract. The vapor retarders are intended for use at tempera- down to a temperature of−20°F (−29°C).
turesof−20to150°F(−29to66°C).Thistestmethoddoesnot 5.4 Room or Cabinet, capable of maintaining 73.4 6 3°F
cover mastics or barrier coatings applied in liquid form or (23 6 2°C) and 50 6 2% relative humidity.
materials intended for use as weather barriers. 5.5 Insulated Gloves.
1.2 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-
priate safety and health practices and determine the applica- mm)squarespecimensforeachtemperatureextremespecified.
bility of regulatory limitations prior to use.
7. Procedure
2. Referenced Documents
7.1 Condition test specimen at a temperature of 73.4 6 3°F
(23 6 2°C) and a relative humidity of 50 6 2% for a period
2.1 ASTM Standards:
C168 Terminology Relating to Thermal Insulation of 24 h.
7.2 Expose the specimen and the mandrel to the test
C1136 Specification for Flexible, Low Permeance Vapor
Retarders for Thermal Insulation temperatures of−20 and 150°F (−29 and 66°C) for a period of
4h.
3. Terminology
7.3 At the end of the exposure period, with specimen and
3.1 Definitions—Definitions of terms used in this test mandrel at test temperatures, bend each specimen around the
method will be found in Terminology C168. mandrel once through an angle of 180° in 3 6 2 s so that the
opposing sides are parallel. If the two surfaces of the test
4. Significance and Use
specimenaremateriallydifferent,sixspecimensshallbetested
4.1 In many applications, the vapor retarders used on a
with three specimens of each surface tested on the outside of
thermal insulation will be exposed to the temperatures listed in the bend.
7.2. Cracking or delamination of the retarder under these
NOTE 1—When test conditions specify both low temperature and high
conditions would, in most cases, cause it to lose its effective-
temperature exposure conditions on the same vapor retarder, it is satis-
ness as a vapor retarder material.
factory to use the same specimen or to select separate specimens for each
oftheexposedtemperatures,unlessthespecificationorcontractexplicitly
...