ASTM C1263-95(2010)

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.

General Information

• Status: Historical
• Publication Date: 31-Oct-2010
• 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(2005)e1 - Standard Test Method for Thermal Integrity of Flexible Water Vapor Retarders
• Effective Date: 01-Nov-2010
• Referred By: ASTM C1423-21 - Standard Guide for Selecting Jacketing Materials for Thermal Insulation
• Effective Date: 01-Nov-2010
• 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-2010
• 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-2010
• Referred By: ASTM C1136-23 - Standard Specification for Flexible, Low Permeance Vapor Retarders for Thermal Insulation
• Effective Date: 01-Nov-2010

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 (Reapproved2010)
Standard Test Method for
1
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 conditions would, in most cases, cause it to lose its effective-
ness as a vapor retarder material.
1.1 This test method covers the visual determination of the
thermal integrity of flexible water vapor retarders for those
5. Apparatus
materials classified under Specification C1136, including
plastic, 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, capable of maintaining 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
and are not considered standard.
5.5 Insulated Gloves.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
6. Test Specimen
responsibility of the user of this standard to establish appro-
6.1 From each sampled vapor retarder, test three 1 ft (305
priate safety and health practices and determine the applica-
mm)squarespecimensforeachtemperatureextremespecified.
bility of regulatory limitations prior to use.
7. Procedure
2. Referenced Documents
2
7.1 Condition test specimen at a temperature of 73.4 6 3°F
2.1 ASTM Standards:
(23 6 2°C) and a relative humidity of 50 6 2% for a period
C168Terminology Relating to Thermal Insulation
of 24 h.
C1136Specification for Flexible, Low Permeance Vapor
Retarders for Thermal Insulation
7.2 Expose the specimen and the mandrel to the test
temperatures of−20 and 150°F (−29 and 66°C) for a period of
3. Terminology
4h.
3.1 Definitions—Definitions of terms used in this test
7.3 At the end of the exposure period, with specimen and
method will be found in Terminology C168.
mandrel at test temperatures, bend each specimen around the
mandrel once through an angle of 180° in 3 6 2 s so that the
4. Significance and Use
opposing sides are parallel. If the two surfaces of the test
4.1 In many applications, the vapor retarders used on a
specimenaremateriallydifferent,sixspecimensshallbetested
thermal insulation will be exposed to the temperatures listed in
with three specimens of each surface tested on the outside of
7.2. Cracking or delamination of the retarder under these
the bend.
NOTE 1—When test conditions specify both low temperature and high
1 temperature exposure conditions on the same vapor retarder, it is satis-
ThistestmethodisunderthejurisdictionofASTMCommitteeC16onThermal
fa
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