ASTM C1136-06

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: C 1136 – 06
Standard Specification for
Flexible, Low Permeance Vapor Retarders for Thermal
1
Insulation
This standard is issued under the fixed designation C1136; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope C1263 TestMethodforThermalIntegrityofFlexibleWater
Vapor Retarders
1.1 This specification covers vapor retarders for thermal
C1338 Test Method for Determining Fungi Resistance of
insulation, specifically, flexible materials with permeance of
Insulation Materials and Facings
0.10 perm or lower and surface burning characteristics of 25
D828 Test Method for Tensile Properties of Paper and
flame spread/50 smoke or lower. These materials are intended
Paperboard Using Constant-Rate-of-ElongationApparatus
for use at surface temperatures of−20 to 150°F (−29 to 66°C).
D882 Test Method for Tensile Properties of Thin Plastic
It does not cover mastics or barrier coatings applied in liquid
Sheeting
form, nor materials intended for use as weather barriers.
D1204 Test Method for Linear Dimensional Changes of
1.2 This specification provides physical requirements for
Nonrigid Thermoplastic Sheeting or Film at Elevated
vapor retarders. Practice C755 provides assistance in solving
Temperature
problems related to moisture vapor transmission through ther-
E84 Test Method for Surface Burning Characteristics of
mal insulation materials.
Building Materials
1.3 Thevaluesstatedininch-poundunitsaretoberegarded
E96 Test Methods for Water Vapor Transmission of Mate-
as standard. The SI units given in parentheses are for informa-
rials
tion only.
2.2 TAPPI Standards:
1.4 The following precautionary caveat pertains to the test
T461 Flame Resistance of Treated Paper and Paperboard
methods portion only, Section 10, of this specification: This
standard does not purport to address all of the safety concerns,
3. Terminology
if any, associated with its use. It is the responsibility of the user
3.1 Definitions—Definitions inTerminology C168 apply to
of this standard to establish appropriate safety and health
terms used in this specification.
practices and determine the applicability of regulatory limita-
tions prior to use.
4. Classification
2. Referenced Documents 4.1 Classification of vapor retarders is based on vapor
2 retardance and strength properties, as listed in Table 1.
2.1 ASTM Standards:
C168 Terminology Relating to Thermal Insulation
5. Materials and Manufacture
C755 PracticeforSelectionofVaporRetardersforThermal
5.1 It is possible to construct vapor retarders from any
Insulation
number of various films, foils, cloths, papers, and reinforce-
D774/D774M Test Method for Bursting Strength of Paper
ments, alone or in combination, to achieve required perfor-
C1258 Test Method for Elevated Temperature and Humid-
mance.
ity Resistance of Vapor Retarders for Insulation
6. Physical Properties
1
6.1 Maximum permeance for a specific type vapor retarder
This specification is under the jurisdiction of ASTM Committee C16 on
Thermal Insulation and is the direct responsibility of Subcommittee C16.33 on
shall be as shown in Table 1 when tested in accordance with
Insulation Finishes and Moisture.
10.1.
Current edition approved May 1, 2006. Published May 2006. Originally
6.2 All vapor retarders shall demonstrate a flame spread of
approved in 1990. Last previous edition approved in 2003 as C1136–03a.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 25 or less and smoke developed of 50 or less when testing the
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
finish side (the side opposite that contacting the insulation) in
Standards volume information, refer to the standard’s Document Summary page on
accordance with 10.2.
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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C1136–06
TABLE 1 Physical Property Requirements
Physical Properties Type I Type II Type III Type IV Type V Type VI
Permeance, max 0.02 (1.15) 0.02 (1.15) 0.10 (5.75) 0.10 (5.75) 0.02 (1.15) 0.03 (1.72)
−1 −1 −2
Perms (ng·Pa ·s ·m )
Burst Strength, min 55 (380) 35 (240) 55 (380) 35 (240) 100 (690) 100 (690)
psi (kPa)
Tensile, Machine Direction 45 (7.9) 30 (5.3) 45 (7.9) 30 (5.3) 40 (7.0) 20 (3.5)
lb/in. width, min (N/mm width, min)
Tensile, Cross Direction 30 (5.3) 20 (3.5) 30 (5.3) 20 (3.5) 60 (10.6) 30 (5.3)
lb/in. width, min (N/mm width, min)
Dimensional Change, max 0.50 0.50 0.50 0.50 4.5 2.6
...