Adopted in 2005, Chapter 7A of the California Building Code describes provisions for attic vents for new construction in wildfire-prone areas. While the California code notes that attic vents should resist the intrusion of embers and flames, there had not been a standard to evaluate such intrusion. A new standard, ASTM E2886/E2886M, Test Method for Evaluating the Ability of Exterior Vents to Resist the Entry of Embers and Direct Flame Impingement, now fills this need.
Vents are used in most new and existing homes and buildings to minimize the chance of excessive moisture buildup, particularly in attics and crawl spaces. The intrusion of embers through vents is known to be one of the causes of home and building ignition and destruction during wildfires. Vents that resist ember entry would help homes and buildings survive such fires.
“Embers from wildfires, not the flames from the main body of the wildfire, are the main threat that homes must resist,” says ASTM member Stephen Quarles, senior scientist, Insurance Institute for Business & Home Safety. “ASTM E2886 will help users discriminate between the ember and flame resistance performance of vents.”
Primary users of the new standard will be manufacturers of vents and building code officials in areas where performance criteria have been established for ventilation products used in homes and building that are constructed in wildfire-prone areas.
ASTM E2886/E2886M was developed by Subcommittee E05.14 on External Fire Exposures, part of ASTM International Committee E05 on Fire Standards.
To purchase ASTM standards, visit www.astm.org and search by the standard designation, or contact ASTM Customer Relations (phone: 877-909-ASTM; sales@astm.org). ASTM International welcomes participation in the development of its standards. For more information on becoming an ASTM member, visit www.astm.org/JOIN.
ASTM International is one of the world’s largest development and delivery systems of standards and related products and services. ASTM International meets the World Trade Organization (WTO) principles for the development of international standards: coherence, consensus, development dimension, effectiveness, impartiality, openness, relevance and transparency. ASTM standards are accepted and used in research and development, product testing, quality systems and commercial transactions.
