ASTM D6694/D6694M-08(2013)e1
(Specification)Standard Specification for Liquid-Applied Silicone Coating Used in Spray Polyurethane Foam Roofing Systems
Standard Specification for Liquid-Applied Silicone Coating Used in Spray Polyurethane Foam Roofing Systems
SCOPE
1.1 This specification covers a liquid-applied solvent dispersed elastomeric coating used as a roofing membrane for spray polyurethane foam (SPF) insulation whose principal polymer in the dispersion contains more than 95 % silicone.
1.2 This specification does not provide guidance for application.
1.3 The following precautionary caveat pertains only to the test method portions, Sections 5 and 6.
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.5 This standard may involve hazardous materials, operations, and equipment. 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 requirements prior to use.
General Information
Relations
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
´1
Designation:D6694/D6694M −08(Reapproved 2013)
Standard Specification for
Liquid-Applied Silicone Coating Used in Spray Polyurethane
Foam Roofing Systems
This standard is issued under the fixed designation D6694/D6694M; 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 (´) indicates an editorial change since the last revision or reapproval.
ε NOTE—Units information was editorially corrected in December 2013.
1. Scope D903 Test Method for Peel or Stripping Strength of Adhe-
sive Bonds
1.1 This specification covers a liquid-applied solvent dis-
D1079 Terminology Relating to Roofing and Waterproofing
persed elastomeric coating used as a roofing membrane for
D1644 Test Methods for Nonvolatile Content of Varnishes
spray polyurethane foam (SPF) insulation whose principal
D2196 Test Methods for Rheological Properties of Non-
polymer in the dispersion contains more than 95 % silicone.
Newtonian Materials by Rotational (Brookfield type)
1.2 This specification does not provide guidance for appli-
Viscometer
cation.
D2370 Test Method for Tensile Properties of Organic Coat-
1.3 The following precautionary caveat pertains only to the ings
D2697 Test Method for Volume Nonvolatile Matter in Clear
test method portions, Sections 5 and 6.
or Pigmented Coatings
1.4 The values stated in either SI units or inch-pound units
D4798 Practice for Accelerated Weathering Test Conditions
are to be regarded separately as standard. The values stated in
and Procedures for Bituminous Materials (Xenon-Arc
each system may not be exact equivalents; therefore, each
Method)
system shall be used independently of the other. Combining
E96/E96M Test Methods for Water Vapor Transmission of
values from the two systems may result in non-conformance
Materials
with the standard.
1.5 This standard may involve hazardous materials,
3. Terminology
operations, and equipment. This standard does not purport to
3.1 Definitions in Terminologies D16 and D1079 shall
address all of the safety concerns, if any, associated with its
apply to this specification.
use. It is the responsibility of the user of this standard to
establish appropriate safety and health practices and deter-
4. Materials and Manufacture
mine the applicability of regulatory requirements prior to use.
4.1 Composition—The product, as manufactured, shall be in
2. Referenced Documents liquid form for application to SPF surfaces by brushing,
2 squeegeeing, rolling, or spraying. The product shall be com-
2.1 ASTM Standards:
posed of dispersion containing as the principal polymer more
D16 TerminologyforPaint,RelatedCoatings,Materials,and
than 95 % silicone polymers to which various pigments and
Applications
other additives have been added to give the required physical
D522 Test Methods for Mandrel Bend Test of Attached
properties.
Organic Coatings
D624 Test Method for Tear Strength of Conventional Vul-
5. Liquid and Physical Properties
canized Rubber and Thermoplastic Elastomers
5.1 Although the product is supplied as a liquid, its perfor-
mance is based on the functional properties of the cured
This specification is under the jurisdiction of ASTM Committee D08 on
material in film form. The coating is formed into a film fully
Roofing and Waterproofing and is the direct responsibility of Subcommittee D08.06
adhered to the substrate.
on Spray Polyurethane Foam Roof Systems.
Current edition approved March 1, 2008. Published December 2013. Originally
5.2 Liquid Property Requirements—The liquid coating shall
approved in 2001. Last previous edition approved in 2008 as D6694 – 08. DOI:
comply with the property requirements in Table 1.
10.1520/D6694_D6694M-08R13.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.3 Cured Film Physical Property Requirements:
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.3.1 Specimen Preparation (Dry Time) (Table 2)—Films
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. are prepared by applying two coats, with a minimum of an 8-h
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
´1
D6694/D6694M−08 (2013)
TABLE 1 Liquid Property Requirements However, if ambient temperature is low and a holding tank is not used to
store purified water, the temperature of water can be below the typical
Physical
ASTM Standard Requirements
range.
Properties
NOTE 2—Based on the irradiance level of 0.35 W/(m · nm) at 340 nm
Viscosity D2196 3500 to 50 000 CPS
specified in Practice D4798, the exposure time required to accumulate the
Volume solids D2697 57 % min
radiant energy specified in 6.3 is 5000 h.
Weight solids D1644 As listed by manufacturer
6.4 Permeance Method (Test Method E96/E96M, Procedure
B)—A 0.5-mm [20 mils] 6 10 % film shall be used.
TABLE 2 Film Physical Property Requirements for Cured Silicone
6.4.1 Test conditions: 23 6 2°C [73.4 6 3.6°F]
Coating for Use on Spray Polyurethane Foam
6.4.2 Test is run in the inverted position with water in
ASTM
contact with the
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.