Unique intumescent (heat expanding) honeycomb design keeps flames, firebrands and embers from entering your attic, eaves and crawlspaces!
Here For CA State Fire Marshal Acceptance & Product Test Information
The Vulcan Vent is an exterior vent that will prohibit both dangerous embers and fire from entering a structure during a wildfire. Vulcan Vents are the first to be accepted in the CBC Ch7A Compliance Policy by the Office of the California State Fire Marshal (www.osfm.fire.ca.gov).
Vulcan Vents have been engineered to:
BLOCK DANGEROUS FLYING EMBERS from penetrating a structure’s ventilation system. Wildfires generate embers which fly through the air and can result in an ember attack on a structure and a new fire being ignited from the inside. Dangerous flying embers do not penetrate the Vulcan Vent design thereby potentially saving structures which are many miles from
PROHIBIT FLAME INSTRUSION through a structure’s ventilation system. Approaching fire generates heat which triggers the Vulcan Vent to close. The vent is coated with a non-toxic Firefree
™ intumescent coating, which expands when exposed to a heat source of
approximately 350° Fahrenheit thereby closing the ¼ inch (or smaller)
Note: Vulcan Vents come standard with 1/4" screening on the face,
the Vulcan honeycomb in the middle and 1/16" screening on
the inside. We special order our Vulcan Vents with 1/8" face
screening to further protect against ember and insect intrusion into the
Vulcan honeycomb. In combination with the honeycomb and 1/16" inside
screening this offers the ultimate in protection while maintaining 91% of
a standard 1/4" screened vents airflow!
Compare the difference
between a standard 1/4" vent and a Vulcan Vent when it really counts...
Vulcan Honeycomb Open Before Flames
Vulcan Honeycomb Closed After Flames
IMPORTANT AIRFLOW NOTES:
Flame & Ember
resistant vents naturally provide less airflow than regular, unprotected
vents and Vulcan Vent airflow ratings (NFVA)
are approximately 91% that of the same size standard 1/4" screened vent
and are listed within each products description. In retrofit
application you may need to increase the number of vents currently in use
to maintain proper ventilation.
Please consult your
local building codes and/or engineer to determine proper airflow/venting
requirements and the number of vents required for your project.
Available in Rear Flange,
Mid-Flange and Front Flange configurations for new/stucco, fiber cement
and retrofit applications respectively..
Standard sizes show below. Custom vents in other shapes & sizes also available, please call for pricing.