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ASTM C1263-95(2000)

(Test Method)

Standard Test Method for Thermal Integrity of Flexible Water Vapor Retarders

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
ICS
91.100.50 - Binders. Sealing materials
Technical Committee
C16 - Thermal Insulation
Drafting Committee
C16.33 - Insulation Finishes and Moisture
Current Stage
Ref Project

Relations

Replaces
ASTM C1263-95 - Standard Test Method for Thermal Integrity of Flexible Water Vapor Retarders
Effective Date
01-Jan-2000
Replaced By
ASTM C1263-95(2005) - 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-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

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ASTM C1263-95(2000) - Standard Test Method for Thermal Integrity of Flexible Water Vapor RetardersASTM C1263-95(2000) - Standard Test Method for Thermal Integrity of Flexible Water Vapor Retarders
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ASTM C1263-95(2000) - Standard Test Method for Thermal Integrity of Flexible Water Vapor Retarders
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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 2000)
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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 5.2 Laboratory Oven, capable of maintaining 63°F (2°C)
up to a temperature of 150°F (66°C).
1.1 This test method covers the visual determination of the
5.3 Laboratory Freezer, capable of maintaining 6 3°F
thermal integrity of flexible water vapor retarders for those
(2°C) down to a temperature of−20°F (−29°C).
materialsclassifiedunderSpecificationC1136,includingplas-
5.4 Room or Cabinet, capable of maintaining 73.4 6 3°F
tic, foil, or paper and composites of two or more of these
(23 6 2°C) and 506 2% relative humidity.
materialstotemperatureslistedinthespecificationorpurchase
5.5 Insulated Gloves.
contract. The vapor retarders are intended for use at tempera-
turesof−20to150°F(−29to66°C).Thistestmethoddoesnot
6. Test Specimen
cover mastics or barrier coatings applied in liquid form or
6.1 From each sampled vapor retarder, test three 1 ft (305
materials intended for use as weather barriers.
mm)squarespecimensforeachtemperatureextremespecified.
1.2 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
7. Procedure
responsibility of the user of this standard to establish appro-
7.1 Condition test specimen at a temperature of 73.46 3°F
priate safety and health practices and determine the applica-
(23 6 2°C) and a relative humidity of 50 6 2% for a period
bility of regulatory limitations prior to use.
of 24 h.
2. Referenced Documents 7.2 Expose the specimen and the mandrel to the test
temperaturesof−20and150°F(−29and66°C)foraperiodof
2.1 ASTM Standards:
4h.
C168 Terminology Relating to Thermal Insulation
7.3 At the end of the exposure period, with specimen and
C1136 Specification for Flexible, Low Permeance Vapor
mandrel at test temperatures, bend each specimen around the
Retarders for Thermal Insulation
mandrel once through an angle of 180° in 3 6 2 s so that the
3. Terminology opposing sides are parallel. If the two surfaces of the test
specimenaremateriallydifferent,sixspecimensshallbetested
3.1 Definitions—Definitions of terms used in this test
with three specimens of each surface tested on the outside of
method will be found in Terminology C168.
the bend.
4. Significance and Use
NOTE 1—When test conditions specify both low temperature and high
4.1 In many applications, the vapor retarders used on a
temperature exposure conditions on the same vapor retarder, it is satis-
factory to use the same specimen or to select separate specimens for each
thermal insulation will be exposed to the temperatures listed in
oftheexposedtemperatures,unlessthespecificationorcontractexplicitly
7.2. Cracking or delamination of the retarder under these
states that exposure tests must be conduc
...

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5.1 On systems operating at sub-ambient temperature, humid ambient conditions cause a vapor driving force toward the insulation. If not retarded, the driven moisture vapor is detrimental to the insulation's thermal resistance. A vapor retarder must resist degradation in order maintain its resistance to vapor passage. Degradation in this test method is induced by elevated temperature and humidity conditions.
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1.1 This test method covers the determination of the resistance of flexible low permeance vapor retarders for thermal insulation as classified in Specification C1136 to elevated temperature and humidity. Water vapor permeance measurement and visual inspection after exposure at elevated temperature and humidity are used to assess vapor retarder response.  
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Standard Test Method for Thermal Integrity of Flexible Water Vapor Retarders

SIGNIFICANCE AND USE
4.1 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.
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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.  
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5.1 PSA joints are a necessary and critical component of an insulation vapor retarder system and, in addition to knowing the permeance of the vapor retarder being used, assessing the permeance of the joints is necessary to indicate the expected performance of the system.  
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