Soffit Vents
Soffit vents built to protect.
Soffit vents are the vents on the underside of the roof’s eaves (soffits). Soffit vents can also be placed under arches, balconies or decking, beams, cornices, or vaults on top of a home. These vents allow fresh air to circulate through the attic space, providing proper ventilation so that condensation doesn’t lead to mold and mildew.Â
Soffit vents draw up cooler air from the base of the roof while hot and humid air is exhausted through roof vents at the top of the attic.
Ember-resistant soffit vents
made for wildfire exposure.
Ember and fire-resistant vents are required under California’s Chapter 7A building codes for homes located in wildfire-prone areas otherwise known as the Wildland-Urban Interface (WUI). As such, Vulcan Vents are recommended for homes by the Office of the State Fire Marshal (OSFM). See the Cal Fire listing here.
Our corrosion-resistant vents were created with homes that face wildfire threat in mind. An inner noncombustible wire mesh screen protects vent openings from floating ember entry while an intumescent coating expands in the presence of intense heat, further blocking entry of embers and flames.
Vulcan soffit vents are available for stucco, wood construction, foam and stucco, fiber cement, or retrofit applications.
Use EverKem Fire Caulking
- We recommend using EverKem 814+, intumescent fire caulking with all installation of Vulcan Vents.
- Our round eave vents are the exception: EverKem 136, mortar based caulking should be used when mounting hardware isn’t an option and flanges are minimal.
- INSTALLATION: Prior to installing the vent, run a bead of EverKem behind the nailing flange to ensure an air tight seal where the vent meets the building material. This ensures that no gaps are present between the vent and your building material where flying embers might enter!
For ordering information, visit out our Store Locator for nearest retailers.
Standard Soffit Flange Diagrams
Vulcan Foam Back Soffit Vent
Vulcan Fiber Cement Soffit Vent
Vulcan Flange Front Soffit Vent
Vulcan Stucco Soffit Vent
Vulcan Vents: Protecting the most vulnerable places on a home
Giving homeowners peace of mind.
Vents on exterior walls, under roofing, and at a home’s foundation, are prime entry-points for dangerous embers that precede a wildfire. Wind-blown embers that fly at a house can get caught in vents and potentially burn the home by igniting combustible materials in an attic, basement, or crawlspace.
Vulcan Vents are open, providing sufficient airflow, but an ember-catching screen and a coating that self-closes will block ember and intrusion of flames when it matters most.
Baffle-free design
for efficient airflow.
Vulcan Vents soffit vents use a baffle-free design to encourage air to circulate freely under the roof covering. Vulcan Vents do not use airflow-interrupting baffles, resulting in more venting per square inch for the net free area.
Vulcan Vent
Features
Honeycomb matrix closing technology with ember-catching screen mesh built into galvanized steel frame
Net free vent area (96 sq. in) providing open soffit ventilation
Designed to meet the new California Building code State Fire Marshal (OSFM) 12 Chapter 7A of the California Wildland-Urban Interface (WUI) fire code program
Passed the American Society for Testing and Materials (ASTM) E2886 to effectively block ember entry
It’s time for your home to protect itself.
Flange Styles
Standard Finishes
G90 Galvanized, Stainless, Copper, Bonderized
| Mfg. Part # | Description | NFVA(square inches) | Flange Style | Cut Out(inches) | Spec. Sheet(download) | Sample Image |
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| VE3522FB | 3.5" x 22" FOAM BACK FLANGE SET BACK 1-1/2" | 41 | Foam Back | 3.5 X 22 |
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| VE3522FC | 3.5" x 22" FIBER CEMENT FLANGE recessed 3/8" | 41 | Fiber Cement | 3.5 X 22 |
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| VE3522FF | 3.5" x 22" FLANGE FRONT | 41 | Standard | 3.5 X 22 |
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| VE3522S | 3.5" x 22" STUCCO SET BACK 3/4" | 41 | Stucco | 3.5 X 22 |
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| VE5522FB | 5.5" x 22" FOAM BACK FLANGE SET BACK 1-1/2" | 75 | Foam Back | 5.5 X 22 |
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| VE5522FC | 5.5" x 22" FIBER CEMENT FLANGE recessed 3/8" | 75 | Fiber Cement | 5.5 X 22 |
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| VE5522FF | 5.5" x 22" FLANGE FRONT | 75 | Standard | 5.5 X 22 |
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| VE5522S | 5.5" x 22" STUCCO SET BACK 3/4" | 75 | Stucco | 5.5 X 22 |
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| VE7522FB | 7.5" x 22" FOAM BACK FLANGE SET BACK 1-1/2" | 119 | Foam Back | 7.5 X 22 |
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| VE7522FC | 7.5" x 22" FIBER CEMENT FLANGE recessed 3/8" | 119 | Fiber Cement | 7.5 X 22 |
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| VE7522FF | 7.5" x 22" FLANGE FRONT | 119 | Standard | 7.5 X 22 |
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| VE7522S | 7.5" x 22" STUCCO SET BACK 3/4" | 119 | Stucco | 7.5 X 22 |
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| VFS414FB | 4" x 14" FOAM BACK FLANGE SET BACK 1-1/2" | 24 | Foam Back | 3.5 X 13.5 |
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| VFS414FC | 4" x 14" FIBER CEMENT FLANGE SET BACK 3/8" | 24 | Fiber Cement | 3.5 X 13.5 |
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| VFS414FF | 4" x 14" FLANGE FRONT | 24 | Flange Front, Retrofit | 3.5 X 13.5 |
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| VFS414S | 4" x 14" STUCCO SET BACK 3/4" | 24 | Stucco | 3.5 X 13.5 |
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| VFS614FB | 6" x 14" FOAM BACK FLANGE SET BACK 1-1/2" | 41 | Foam Back | 5.5 X 13.5 |
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| VFS614FC | 6" x 14" FIBER CEMENT FLANGE SET BACK 3/8" | 41 | Fiber Cement | 5.5 X 13.5 |
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| VFS614FF | 6" x 14" FLANGE FRONT | 41 | Flange Front, Retrofit | 5.5 X 13.5 |
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| VFS614S | 6" x 14" STUCCO SET BACK 3/4" | 41 | Stucco | 5.5 X 13.5 |
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| VFS814FB | 8" x 14" FOAM BACK FLANGE SET BACK 1-1/2" | 62 | Foam Back | 7.5 X 13.5 |
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| VFS814FC | 8" x 14" FIBER CEMENT FLANGE SET BACK 3/8" | 62 | Fiber Cement | 7.5 X 13.5 |
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| VFS814FF | 8" x 14" FLANGE FRONT | 62 | Flange Front, Retrofit | 7.5 X 13.5 |
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| VFS814S | 8" x 14" STUCCO SET BACK 3/4" | 62 | Stucco | 7.5 X 13.5 |
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*Some Vulcan Vent foundation vents, eave vents, and soffit vents are in multiple categories because of cross-application capability of certain models.
