Vulcan Technologies, Inc. Logo
Vulcan Flame About Vulcan Vent
Vulcan Vent Products

Vulcan Vent Product testing

Testing addresses two critical issues: 

  • Flying embers. Embers can travel thousands of feet from the actual fire and pass through standard vents, starting a fire inside the structure (ie, attics, etc). The test measures the ability of the Vulcan Vent to prevent such embers to penetrate the vent.

  • Flame penetration. When a fire reaches a structure, it can pass through a standard vent and ignite a fire from within. The test measures the ability of the Vulcan Vent to self- close when it intumesces, thus blocking fire progression.

How the testing was conducted

Ember Intrusion Test

Hot embers are generated and sucked down on top of a vent, simulating flying embers. The vent is directly below the showering embers and must prevent any embers from igniting a cotton target below it. If the falling embers pass through the vent igniting the cotton, testing is terminated.  The test must be run three consecutive times with no ignition to the cotton layer for acceptance.

Flame Intrusion Test

A 4 foot wide x 8 foot tall wall structure is built with the vent placed simulating the vent on the soffit of a house. A gas burner is set below the wall and regulated to a control burn of 300 kw for 10 minutes.  Three thermocouples are placed above the vent to measure flame and heat impingement into the attic space. Ignition of the burner will cause the flame to climb up the wall and to the vent. The temperature rise at the thermocouples cannot exceed 325° Celsius at the end of the 10 minute time period.  The vent must pass the test criteria three consecutive times with no thermocouple temperatures exceeding 325° Celsius.

Test Results

Ember Intrusion Test

Standard 1/4” Open Screen Vent
The standard vent failed the ember test at 22 seconds with embers passing through the screen and igniting the cotton below.   It is to be noted; a 1/8” open screen vent also failed the ember test in just over 20 seconds.

Vulcan Self-Closing Vent
The Vulcan Vent passed three consecutives tests in which no embers passed through to ignite the cotton throughout the full length of the test.

ember machine
Vulcan Soffit Vent
embers stopped by vent
Vulcan Vent stops dangerous embers.

Flame Intrusion Test

Standard 1/4” Open Screen Vent
Embers and flame passed through the standard vents at 15 seconds into the test and the standard vent failed the 325° Celsius temperature criteria within two minutes.  Embers and flame continued to pass through the vents until the test was terminated at 10 minutes.  The test showed that embers and flame will easily pass through a traditional vent and penetrate inside the structure.
Vulcan Self-Closing Vent
All testing criteria was met and surpassed in three separate test panels.  The tests were run over a15 minute time frame with no ember or flame penetration occurring through the Vulcan Vent.  The test confirmed the ability of a Vulcan Vent to stop embers and fire penetration.  Test conducted at Western Fire Center, Kelso, WA. An IAS accredited third- party testing facility; Report No. PN07059.

- Western Fire Center, Inc Test Sheet


cedar shingles
Typical wall construction for a residential home. Wall is 8' high with soffit and Vulcan Vent placement at the top of the wall.
cedar shingles on fire
Same wall (with Vulcan Vent) in flames generated by a 300 kw burner at the bottom of the wall. No embers or flame have entered the attic.