ASTM D6630/D6630M-16(2022)
(Guide)Standard Guide for Low-Slope Insulated Roof Membrane Assembly Performance
Standard Guide for Low-Slope Insulated Roof Membrane Assembly Performance
SIGNIFICANCE AND USE
4.1 A roof assembly must work as a system. Any component of the roof assembly demonstrating an inherent weakness or inability to perform will diminish the roof system performance and service life expected. This guide lists minimum performance attributes required of low-slope roof assemblies. Products not previously used as roof membrane materials require additional tests beyond the scope of this document. This guide is not intended for use on in-service roofing materials. Roof membranes and other components should conform to ASTM product standards, if available.
SCOPE
1.1 This guide lists test methods intended to establish a minimum level of performance for insulated roof membrane assemblies, and lists pertinent design guidelines and installation methods in a unified manner. Material tests and evaluations are included with and without roof insulation.
1.2 It is not possible to establish a precise correlation between laboratory tests on roof assemblies and natural weathering due to variations in geographical climate, design, material, and installation.
1.3 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.
1.4 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.
1.5 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
Relations
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: D6630/D6630M − 16 (Reapproved 2022)
Standard Guide for
Low-Slope Insulated Roof Membrane Assembly
Performance
This standard is issued under the fixed designation D6630/D6630M; 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 D450/D450M Specification for Coal-Tar Pitch Used in
Roofing, Dampproofing, and Waterproofing
1.1 This guide lists test methods intended to establish a
D1079 Terminology Relating to Roofing and Waterproofing
minimum level of performance for insulated roof membrane
D2523/D2523M Practice for Testing Load-Strain Properties
assemblies, and lists pertinent design guidelines and installa-
of Roofing Membranes
tion methods in a unified manner. Material tests and evalua-
D4434/D4434M Specification for Poly(Vinyl Chloride)
tions are included with and without roof insulation.
Sheet Roofing
1.2 It is not possible to establish a precise correlation
D4637/D4637M Specification for EPDM Sheet Used in
between laboratory tests on roof assemblies and natural weath-
Single-Ply Roof Membrane
ering due to variations in geographical climate, design,
D4798/D4798M Practice for Accelerated Weathering Test
material, and installation.
Conditions and Procedures for Bituminous Materials
1.3 The values stated in either SI units or inch-pound units
(Xenon-Arc Method)
are to be regarded separately as standard. The values stated in
D4799/D4799M Practice for Accelerated Weathering Test
each system may not be exact equivalents; therefore, each
Conditions and Procedures for Bituminous Materials
system shall be used independently of the other. Combining
(Fluorescent UV,Water Spray, and Condensation Method)
values from the two systems may result in nonconformance
D5019 Specification for Reinforced CSM (Chlorosulfonated
with the standard.
Polyethylene) Sheet Used in Single-Ply Roof Membrane
1.4 This standard does not purport to address all of the
(Withdrawn 2011)
safety concerns, if any, associated with its use. It is the
D5147/D5147M Test Methods for Sampling and Testing
responsibility of the user of this standard to establish appro-
Modified Bituminous Sheet Material
priate safety, health, and environmental practices and deter-
D5601 Test Method for Tearing Resistance of Roofing and
mine the applicability of regulatory limitations prior to use.
Waterproofing Materials and Membranes (Withdrawn
1.5 This international standard was developed in accor-
2002)
dance with internationally recognized principles on standard-
D5602/D5602M Test Method for Static Puncture Resistance
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom- of Roofing Membrane Specimens
mendations issued by the World Trade Organization Technical D5635/D5635M Test Method for Dynamic Puncture Resis-
Barriers to Trade (TBT) Committee.
tance of Roofing Membrane Specimens
D5849/D5849M Test Method for Evaluating Resistance of
2. Referenced Documents
Modified Bituminous Roofing Membrane to Cyclic Fa-
2.1 ASTM Standards:
tigue (Joint Displacement)
D95 Test Method for Water in Petroleum Products and
D6754/D6754M Specification for Ketone Ethylene Ester
Bituminous Materials by Distillation
Based Sheet Roofing
D6878/D6878M Specification for Thermoplastic Polyolefin-
Based Sheet Roofing
This guide is under the jurisdiction of ASTM Committee D08 on Roofing and
Waterproofing and is the direct responsibility of Subcommittee D08.20 on Roofing E96/E96M Test Methods for Gravimetric Determination of
Membrane Systems.
Water Vapor Transmission Rate of Materials
Current edition approved July 1, 2022. Published July 2022. Originally approved
E631 Terminology of Building Constructions
in 2001. Last previous edition approved in 2016 as D6630/D6630M – 16. DOI:
10.1520/D6630_D6630M-16R22.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on The last approved version of this historical standard is referenced on
the ASTM website. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D6630/D6630M − 16 (2022)
2.2 ASCE Standard:
Roof Membrane Configuration Method of Attachment
ASCE-7 Minimum Design Loads for Buildings and Other
Method LD Loose laid air Uses air pressure equalization
pressure equalization valves valve with loose laid membrane
Structures
tightly sealed at edge. Needs
2.3 ANSI/SPRI Standard:
airtight deck.
ANSI/SPRI RP-4 Wind Design Guide for Ballasted Single
Method M Partially attached/ Uses a variety of fasteners and
Ply Roof Systems
mechanically fastened attachment schemes that anchor
membrane to roof deck for uplift
3. Terminology
resistance.
3.1 For terminology used in this standard, refer to Termi-
Method P Protected membrane Uses aggregate ballast, pavers, or
nologies D1079 and E631.
other dead load devices for wind
uplift resistance of extruded
3.2 roof assemblies—the weathering or waterproofing
polystyrene.
material, whether film, flexible membrane, semi-flexible
6. Roof Material Attributes
membrane, factory or field manufactured; the underlying
substrate including insulation (if used) above or below the
6.1 The roof membrane and insulated roof system shall be
membrane, or both; supporting deck structure and method of tested according to the procedures in Table 1. In addition, the
attachment of the entire assembly. Low-slope roof assemblies
roof membrane shall meet specific test requirements where
may be up to 25 % slope. Some roof assemblies may accom- identified.
modate higher slopes.
7. Design of Roofing Assembly
3.3 performance—theabilityoftheroofsystemasdesigned,
7.1 The roofing system may consist of the following func-
manufactured, and installed to provide adequate levels of
tional layers from the bottom to the top:
expected service life in terms of watertightness, thermal
7.1.1 Structural deck;
protection, and condensation control, while being maintain-
7.1.2 Air retarder;
able. Live loading of the roof system may also occur.
7.1.3 Vapor retarder;
7.1.4 Thermal insulation; and
4. Significance and Use
7.1.5 Roofing membrane
4.1 Aroofassemblymustworkasasystem.Anycomponent
7.2 The following paragraphs list the minimum design
of the roof assembly demonstrating an inherent weakness or
requirements for each functional layer of the roof assembly.
inability to perform will diminish the roof system performance
These may exceed the requirements of the local building code.
and service life expected. This guide lists minimum perfor-
7.2.1 Structural Deck—The structural deck shall have the
mance attributes required of low-slope roof assemblies. Prod-
capacity to support the full design load, including dead load,
ucts not previously used as roof membrane materials require
live loads, and environmental loads anticipated or mandated by
additional tests beyond the scope of this document. This guide
code.Thedeadloadoftheroofsystemshallbeincludedaspart
is not intended for use on in-service roofing materials. Roof
of the design load. Deck deflection should be limited to L/240
membranes and other components should conform to ASTM
under full design load. Ponding due to deck deflection should
product standards, if available.
not occur. Provide overflow drains or scuppers when interior
5. Roof Design Classifications
drains are used. The live load capacity shall not be less than
98 Kg⁄m [20 psf] and should have adequate capacity to resist
5.1 Type of Construction:
construction loads.
Class Construction
7.2.2 Air Retarder—Air retarders are used to retard the flow
I New New
of air from the interior into the roof system. When air retarders
II Replace Remove existing roof membrane (and existing
are used properly, they reduce the effects from wind on some
insulation, if necessary) and replace
roofing systems. With care, the vapor retarder and air retarder
functions may be provided by the same materials.
III Re-cover Re-cover existing roof membrane
7.2.3 Vapor Retarder—The vapor retarder retards the trans-
fer of the moist-warm interior vapor into the roofing system.A
5.2 Methods of Attachment:
vapor retarder should be used on the warm side of the system
Roof Membrane Configuration Method of Attachment
over moist occupancies, and at locations where the quantity of
Method A Adhered Uses a variety of adhesives
including hot and cold applied. moisture accumulated in the winter exceeds the moisture
capacity of the materials in the system.
Method B Loose laid ballasted Uses aggregate ballast or pavers.
7.2.4 Thermal Insulation—Thermal insulation must be used
Structure needs capacity to carry
ballast dead load. wherever a building is heated or cooled, except industrial
facilities where excess process heat needs to be dissipated.
Where used, it should be installed in two or more layers with
offsetjoints.Taperedinsulationcanbeusedwherenecessaryto
Available from American Society of Civil Engineers (ASCE), 1801 Alexander
provide a positive slope to the drains. Provide sump areas at all
Bell Dr., Reston, VA 20191, http://www.asce.org.
roof drains to assist drainage. The insulation selected must b
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