ASTM E1680-16(2022)

Standard Test Method for Rate of Air Leakage through Exterior Metal Roof Panel Systems

SIGNIFICANCE AND USE
5.1 This test method is a standard procedure for determining air leakage characteristics under specified air pressure differences.
Note 1: The air pressure differences acting across a building envelope vary greatly. The slope of the roof and other factors affecting air pressure differences and the implications of the resulting air leakage relative to the environment within buildings are discussed in the literature.4,5,6 These factors shall be considered fully when specifying the test pressure difference to be used.
Note 2: When applying the results of tests by this test method, note that the performance of a roof or its components, or both, may be a function of proper installation and adjustment. The performance in service will also depend on the rigidity of supporting construction, the presence of interior treatments, the roof slope, and the resistance of components to deterioration by various causes: corrosive atmospheres, aging, ice, vibration, thermal expansion, and contraction, etc. It is difficult to simulate the identical complex environmental conditions that can be encountered in service, including rapidly changing pressures due to wind gusting. Some designs are more sensitive than others to these environmental conditions.  
5.2 Rates of air leakage are sometimes used for comparison purposes. The comparisons are not always valid unless the components being tested and compared are of essentially the same size, configuration, and design.
Note 3: The specimen construction discussed in 1.2 and required in 8.1 isolates a source of leakage. The rate of air leakage measured during the test method has units of cubic feet per minute per square foot (litres per second per square metre). Openings and details such as end laps or roof curbs are excluded since leakage is measured more appropriately in cubic feet per minute per foot (litres per second per metre) at these conditions. The test specimen area is relatively small; the inclusion of details will give unrea...
SCOPE
1.1 This test method covers the determination of the resistance of exterior metal roof panel systems to air infiltration resulting from either positive or negative air pressure differences. The test method described is for tests with constant temperature and humidity across the specimen. This test method is a specialized adaption of Test Method E283.  
1.2 This test method is applicable to any roof area. This test method is intended to measure only the air leakage associated with the field of the roof, including the panel side laps and structural connections; it does not include leakage at the openings or perimeter or any other details.  
1.3 The proper use of this test method requires knowledge of the principles of air flow and pressure measurements.  
1.4 The text of this test method references notes and footnotes excluding tables and figures, which provide explanatory material. These notes and footnotes shall not be considered to be requirements of the test method.  
1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.6 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. For specific precautionary statements, see Section 7.  
1.7 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: 30-Apr-2022
• ICS: 91.060.20 - Roofs
• Technical Committee: E06 - Performance of Buildings
• Drafting Committee: E06.57 - Performance of Metal Roof Systems

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: E1680 − 16 (Reapproved 2022)
Standard Test Method for
Rate of Air Leakage through Exterior Metal Roof Panel
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Systems
This standard is issued under the fixed designation E1680; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
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1.1 This test method covers the determination of the resis- 2.1 ASTM Standards:
tance of exterior metal roof panel systems to air infiltration E177Practice for Use of the Terms Precision and Bias in
resulting from either positive or negative air pressure differ- ASTM Test Methods
ences. The test method described is for tests with constant E283Test Method for Determining Rate of Air Leakage
temperature and humidity across the specimen. This test Through ExteriorWindows, Skylights, CurtainWalls, and
method is a specialized adaption of Test Method E283. Doors Under Specified Pressure Differences Across the
Specimen
1.2 This test method is applicable to any roof area.This test
E631Terminology of Building Constructions
method is intended to measure only the air leakage associated
E691Practice for Conducting an Interlaboratory Study to
with the field of the roof, including the panel side laps and
Determine the Precision of a Test Method
structural connections; it does not include leakage at the
E1592Test Method for Structural Performance of Sheet
openings or perimeter or any other details.
Metal Roof and Siding Systems by Uniform Static Air
1.3 The proper use of this test method requires knowledge
Pressure Difference
of the principles of air flow and pressure measurements.
E1646Test Method for Water Penetration of Exterior Metal
Roof Panel Systems by Uniform Static Air Pressure
1.4 The text of this test method references notes and
footnotes excluding tables and figures, which provide explana- Difference
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tory material. These notes and footnotes shall not be consid-
2.2 Other Standard:
ered to be requirements of the test method.
AAMA 501Methods of Test for Metal Curtain Walls
1.5 The values stated in inch-pound units are to be regarded
3. Terminology
as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only 3.1 Definitions—For definitions of general terms relating to
buildingconstructionusedinthistestmethod,seeTerminology
and are not considered standard.
E631.
1.6 This standard does not purport to address all of the
3.2 Definitions of Terms Specific to This Standard:
safety concerns, if any, associated with its use. It is the
3.2.1 air leakage (Q)—the volume of air flowing per unit of
responsibility of the user of this standard to establish appro-
time through the assembled specimen under a test pressure
priate safety, health, and environmental practices and deter-
difference,expressedincubicfeetperminute(cubicmetresper
mine the applicability of regulatory limitations prior to use.
second).
For specific precautionary statements, see Section 7.
1.7 This international standard was developed in accor- 3.2.2 extraneous air leakage (Q )—the difference between
L
the metered air flow (Q ) and air leakage (Q); the leakage of
dance with internationally recognized principles on standard-
m
ization established in the Decision on Principles for the the remainder of the test chamber.
Development of International Standards, Guides and Recom-
3.2.3 metered air flow (Q )—the volume of air flowing per
m
mendations issued by the World Trade Organization Technical
unitoftimethroughtheairflowmeteringsystem,expressedin
Barriers to Trade (TBT) Committee.
cubic feet per minute (cubic metres per second).
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This test method is under the jurisdiction of ASTM Committee E06 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Performance of Buildings and is the direct responsibility of Subcommittee E06.57 contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
on Performance of Metal Roof Systems. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved May 1, 2022. Published May 2022. Originally the ASTM website.
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approved in 1995. Last previous edition approved in 2016 as E1680–16. DOI: Available from Fenestration & Glazing IndustryAlliance (FGIA), 1900 E Golf
10.1520/E1680-16R22. Rd, Suite 1250, Schaumburg, IL 60173, https://www.fgiaonline.org/.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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