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ASTM D6694/D6694M-15(2023)

(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

ABSTRACT
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. The product, as manufactured, shall be in liquid form for application to SPF surfaces by brushing, squeegeeing, rolling, or spraying. The product shall be composed of dispersion containing as the principal polymer more than 95 % silicone polymers to which various pigments and other additives have been added to give the required physical properties. Liquid properties like viscosity, volume solids, and weight solids shall be determined after conducting different tests. Physical properties of cured silicone coating like elongation, tensile strength, permeance, accelerated weathering, adhesion, tear resistance, and low-temperature flexibility shall be determined after a series of tests.
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 nonconformance with the standard.  
1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

Status
Published
Publication Date
31-Dec-2022
ICS
83.100 - Cellular materials
91.060.20 - Roofs
Technical Committee
D08 - Roofing and Waterproofing
Drafting Committee
D08.09 - Liquid Applied Coatings for Roofing and Asphaltic Concrete Pavement
Current Stage
Ref Project

Relations

Refers
ASTM E1953-20 - Standard Practice for Description of Thermal Analysis and Rheology Apparatus
Effective Date
15-Mar-2020
Refers
ASTM D1079-20 - Standard Terminology Relating to Roofing and Waterproofing
Effective Date
01-May-2020

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ASTM D6694/D6694M-15(2023) - Standard Specification for Liquid-Applied Silicone Coating Used in Spray Polyurethane Foam Roofing SystemsASTM D6694/D6694M-15(2023) - Standard Specification for Liquid-Applied Silicone Coating Used in Spray Polyurethane Foam Roofing Systems
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ASTM D6694/D6694M-15(2023) - Standard Specification for Liquid-Applied Silicone Coating Used in Spray Polyurethane Foam Roofing Systems
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Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D6694/D6694M −15 (Reapproved 2023)
Standard Specification for
Liquid-Applied Silicone Coating Used in Spray Polyurethane
1
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.
1. Scope D522/D522M Test Methods for Mandrel Bend Test of At-
tached Organic Coatings
1.1 This specification covers a liquid-applied solvent dis-
D624 Test Method for Tear Strength of Conventional Vul-
persed elastomeric coating used as a roofing membrane for
canized Rubber and Thermoplastic Elastomers
spray polyurethane foam (SPF) insulation whose principal
D903 Test Method for Peel or Stripping Strength of Adhe-
polymer in the dispersion contains more than 95 % silicone.
sive Bonds
1.2 This specification does not provide guidance for appli-
D1079 Terminology Relating to Roofing and Waterproofing
cation.
D1644 Test Methods for Nonvolatile Content of Varnishes
1.3 The following precautionary caveat pertains only to the D2196 Test Methods for Rheological Properties of Non-
Newtonian Materials by Rotational Viscometer
test method portions, Sections 5 and 6.
D2370 Test Method for Tensile Properties of Organic Coat-
1.4 The values stated in either SI units or inch-pound units
ings
are to be regarded separately as standard. The values stated in
D2697 Test Method for Volume Nonvolatile Matter in Clear
each system may not be exact equivalents; therefore, each
or Pigmented Coatings
system shall be used independently of the other. Combining
D4798/D4798M Practice for Accelerated Weathering Test
values from the two systems may result in nonconformance
Conditions and Procedures for Bituminous Materials
with the standard.
(Xenon-Arc Method)
1.5 This standard does not purport to address all of the
E96/E96M Test Methods for Gravimetric Determination of
safety concerns, if any, associated with its use. It is the
Water Vapor Transmission Rate of Materials
responsibility of the user of this standard to establish appro-
E1953 Practice for Description of Thermal Analysis and
priate safety, health, and environmental practices and deter-
Rheology Apparatus
mine the applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accor-
3. Terminology
dance with internationally recognized principles on standard-
3.1 Definitions in Terminologies D16 and D1079 shall
ization established in the Decision on Principles for the
apply to this specification.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
4. Materials and Manufacture
Barriers to Trade (TBT) Committee.
4.1 Composition—The product, as manufactured, shall be in
liquid form for application to SPF surfaces by brushing,
2. Referenced Documents
squeegeeing, rolling, or spraying. The product shall be com-
2
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
properties.
1
This specification is under the jurisdiction of ASTM Committee D08 on
5. Liquid and Physical Properties
Roofing and Waterproofing and is the direct responsibility of Subcommittee D08.09
on Liquid Applied Coatings for Roofing and Asphaltic Concrete Pavement.
5.1 Although the product is supplied as a liquid, its perfor-
Current edition approved Jan. 1, 2023. Published January 2023. Originally
mance is based on the functional properties of the cured
approved in 2001. Last previous edition approved in 2015 as D6694/D6694M – 15.
material in film form. The coating is formed into a film fully
DOI: 10.1520/D6694_D6694M-15R23.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or adhered to the substrate.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.2 Liquid Property Requirements—The liquid coating shall
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. comply with the property requirements in Table 1.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D6694/D6694M − 15 (2023)
TABLE 1 Liquid Property Requirements
Physical
ASTM Standard Requirements
Properties
Viscosity
...

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SIGNIFICANCE AND USE
4.1 Regulatory Requirements—The USA Code of Federal Regulations (10CFR Part 50, Appendix H) requires the implementation of a reactor vessel materials surveillance program for all operating LWRs. Other countries have similar regulations. The purpose of the program is to (1) monitor changes in the fracture toughness properties of ferritic materials in the reactor vessel beltline6 resulting from exposure to neutron irradiation and the thermal environment, and (2) make use of the data obtained from surveillance programs to determine the conditions under which the vessel can be operated with adequate margins of safety throughout its service life. Practice E185, derived mechanical property data, and (r, θ, z) physics-dosimetry data (derived from the calculations and reactor cavity and surveillance capsule measurements (1) using physics-dosimetry standards) can be used together with information in Guide E900 and Refs. 4, 11-18 to provide a relation between property degradation and neutron exposure, commonly called a “trend curve.” To obtain this trend curve at all points in the pressure vessel wall requires that the selected trend curve be used together with the appropriate (r, θ, z) neutron field information derived by use of this guide to accomplish the necessary interpolations and extrapolations in space and time.  
4.2 Neutron Field Characterization—The tasks required to satisfy the second part of the objective of 4.1 are complex and are summarized in Practice E853. In doing this, it is necessary to describe the neutron field at selected (r, θ, z) points within the pressure vessel wall. The description can be either time dependent or time averaged over the reactor service period of interest. This description can best be obtained by combining neutron transport calculations with plant measurements such as reactor cavity (ex-vessel) and surveillance capsule or RPV cladding (in-vessel) measurements, benchmark irradiations of dosimeter sensor materials, and knowledge of th...
SCOPE
1.1 This guide establishes the means and frequency of monitoring the neutron exposure of the LWR reactor pressure vessel throughout its operating life.  
1.2 The physics-dosimetry relationships determined from this guide may be used to estimate reactor pressure vessel damage through the application of Practice E693 and Guide E900, using fast neutron fluence (E > 1.0 MeV and E > 0.1 MeV), displacements per atom (dpa), or damage-function-correlated exposure parameters as independent exposure variables. Supporting the application of these standards are the E853, E944, E1005, and E1018 standards, identified in 2.1.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Guide
    12 pages
    English language
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  • Guide
    12 pages
    English language
    sale 15% off