Standard Test Method for Determining Fire Penetration of Exterior Wall Assemblies Using a Direct Flame Impingement Exposure

SIGNIFICANCE AND USE
The test method described herein measures the ability of the exterior wall covering material or system to resist fire penetration from the exterior to the unexposed side of the wall assembly under the specified conditions of exposure.  
Representative joints and other characteristics of an assembly shall be included in a test specimen when these details are representative of the construction of the end-use product(s).
This test method is applicable to end-use product(s) not having an ideally planar external surface.
The overall performance of the test specimen is visually documented by full-color photographic records. Video taping of the complete fire test is an acceptable alternative to the photographic record. The use of infrared photography of the unexposed side of the test wall can be used to reveal development of increasing temperatures or persisting hot spots.
In this procedure, the specimens are subjected to a specific set of laboratory fire test exposure conditions. If different test conditions are substituted or the anticipated end-use conditions are changed, it is not known whether it is possible by use of this test to predict changes in the performance characteristics measured. Therefore, the results are strictly valid only for the fire test exposure conditions described in this procedure.
SCOPE
1.1 This fire-test-response standard prescribes a method to assess the fire performance of a vertically oriented specimen exposed to direct flame impingement in a simulated external fire exposure potentially encountered in a ‘Wildland Urban Interface’ scenario. This test method provides data suitable for comparing the performance of materials, which are used as the exposed surfaces of exterior walls in construction applications.
Note 1—This test method closely follows the test procedure of California Office of State Marshal (SFM) Method 12-7A-1.  
1.2 This test method measures the ability of the wall system to resist fire penetration from the exterior into the wall cavity or unexposed side of the test assembly under the conditions of exposure.  
1.3 This test method provides data suitable for comparing the performance of vertically oriented materials, products or assemblies in exterior construction applications. The test specimen shall be tested in thicknesses and configurations representative of actual end product or system uses.
1.4 Limitations of the test method are listed in Section 5.5.  
1.5 The values stated in SI units are to be regarded as standard.
1.6 This standard is used to measure and describe the response of materials, products, or assemblies to heat and flame under controlled conditions, but does not by itself incorporate all factors required for fire hazard or fire risk assessment of the materials, products, or assemblies under actual fire conditions.  
1.7 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 limitations prior to use.
1.8 Fire testing of products and materials is inherently hazardous, by virtue by the use of hazardous materials, operations or equipment, and adequate safeguards for personnel and property shall be employed in conducting these tests.

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ASTM E2707-09 - Standard Test Method for Determining Fire Penetration of Exterior Wall Assemblies Using a Direct Flame Impingement Exposure
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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
Designation: E2707 − 09 AnAmerican National Standard
Standard Test Method for
Determining Fire Penetration of Exterior Wall Assemblies
1
Using a Direct Flame Impingement Exposure
This standard is issued under the fixed designation E2707; 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 1.8 Fire testing of products and materials is inherently
hazardous, by virtue by the use of hazardous materials,
1.1 This fire-test-response standard prescribes a method to
operations or equipment, and adequate safeguards for person-
assess the fire performance of a vertically oriented specimen
nel and property shall be employed in conducting these tests.
exposed to direct flame impingement in a simulated external
fire exposure potentially encountered in a ‘Wildland Urban
2. Referenced Documents
Interface’scenario. This test method provides data suitable for
3
2.1 ASTM Standards:
comparing the performance of materials, which are used as the
D2898 Practice for Accelerated Weathering of Fire-
exposedsurfacesofexteriorwallsinconstructionapplications.
Retardant-Treated Wood for Fire Testing
NOTE 1—This test method closely follows the test procedure of
D4442Test Methods for Direct Moisture Content Measure-
2
California Office of State Marshal (SFM) Method 12-7A-1.
ment of Wood and Wood-Base Materials
1.2 Thistestmethodmeasurestheabilityofthewallsystem
D4444Test Method for Laboratory Standardization and
to resist fire penetration from the exterior into the wall cavity
Calibration of Hand-Held Moisture Meters
or unexposed side of the test assembly under the conditions of
D6662Specification for Polyolefin-Based Plastic Lumber
exposure.
Decking Boards
D7032Specification for Establishing Performance Ratings
1.3 This test method provides data suitable for comparing
for Wood-Plastic Composite Deck Boards and Guardrail
the performance of vertically oriented materials, products or
Systems (Guards or Handrails)
assembliesinexteriorconstructionapplications.Thetestspeci-
E176Terminology of Fire Standards
men shall be tested in thicknesses and configurations represen-
E2257Test Method for Room Fire Test of Wall and Ceiling
tative of actual end product or system uses.
Materials and Assemblies
1.4 Limitations of the test method are listed in Section 5.5.
2.2 ISO Standards:
4
1.5 The values stated in SI units are to be regarded as
ISO 13943Fire Safety—Vocabulary
standard.
3. Terminology
1.6 This standard is used to measure and describe the
3.1 Definitions—For definitions of terms used in this
responseofmaterials,products,orassembliestoheatandflame
standard, see Terminology E176 and ISO 13943. In case of
under controlled conditions, but does not by itself incorporate
conflict, the definitions given in Terminology E176 shall
allfactorsrequiredforfirehazardorfireriskassessmentofthe
prevail.
materials, products, or assemblies under actual fire conditions.
3.2 Definitions of Terms Specific to This Standard:
1.7 This standard does not purport to address all of the
3.2.1 orientation, n—theverticalplaneinwhichtheexposed
safety concerns, if any, associated with its use. It is the
face of the test specimen is located during testing.
responsibility of the user of this standard to establish appro-
3.2.2 siding (cladding), n—any material that constitutes the
priate safety and health practices and determine the applica-
exposedexteriorcoveringofanexteriorwallandsuchmaterial
bility of regulatory limitations prior to use.
is applied over sheathing or directly attached to the wall
system.
1
This test method is under the jurisdiction of ASTM Committee E05 on Fire
3
Standards and is the direct responsibility of Subcommittee E05.14 on External Fire For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Exposures. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved Aug. 1, 2009. Published September 2009. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/E2707-09. the ASTM website.
2
4
2007CaliforniaBuildingCode,Chapter7A[SFM],MaterialsandConstruction Available from International Organization for Standardization (ISO), 1, ch. de
Methods for Exterior Wildfire Exposure, Exterior Wall Siding and Sheathing, SFM la Voie-Creuse, Case postale 56, CH-1211, Geneva 20, Switzerland, http://
Standard 12-7A-1. www.iso.ch.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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E2707 − 09
3.2.3 sheathing, n—the material placed on an exterior wall 7. Apparatus
benea
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