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. 

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.

soffit vent with sufficient airflow and a coating that self-closes under extreme heat
EverKem Fire Stop 814

Use EverKem Fire Caulking

  1. 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.
  2. 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

* The above installation diagrams are for general and conceptual, illustration purposes only! For specific installation instructions, please consult a licensed building professional.

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.

Vulcan Vents are meant to allow airflow while blocking vulnerable spaces from dangerous embers and flames when fire is near.
baffle-free vents with more venting per square inch

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

Fire Resistant Retrofits kit - Honeycomb matrix closing technology - built into galvanized steel frame

Honeycomb matrix closing technology with ember-catching screen mesh built into galvanized steel frame

Fire Resistant Retrofits kit - Baffle-free design for maximum airflow (NFVA) to keep your home dry

Net free vent area (96 sq. in) providing open soffit ventilation

Fire Resistant Retrofits kit - Designed to meet the new California Building code State Fire Marshal

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

Fire Resistant Retrofits kit - Passed the American Society for Testing and Materials (ASTM) E2886

Passed the American Society for Testing and Materials (ASTM) E2886 to effectively block ember entry

It’s time for your home to protect itself.

 * For coastal environments, copper, stainless or powder coated finishes are highly recommended. *

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
VE3522FB 3.5" x 22" FOAM BACK FLANGE SET BACK 1-1/2" 41 Foam Back 3.5 X 22 download icon view icon
VE3522FC 3.5" x 22" FIBER CEMENT FLANGE recessed 3/8" 41 Fiber Cement 3.5 X 22 download icon view icon
VE3522FF 3.5" x 22" FLANGE FRONT 41 Standard 3.5 X 22 download icon view icon
VE3522S 3.5" x 22" STUCCO SET BACK 3/4" 41 Stucco 3.5 X 22 download icon view icon
VE5522FB 5.5" x 22" FOAM BACK FLANGE SET BACK 1-1/2" 75 Foam Back 5.5 X 22 download icon view icon
VE5522FC 5.5" x 22" FIBER CEMENT FLANGE recessed 3/8" 75 Fiber Cement 5.5 X 22 download icon view icon
VE5522FF 5.5" x 22" FLANGE FRONT 75 Standard 5.5 X 22 download icon view icon
VE5522S 5.5" x 22" STUCCO SET BACK 3/4" 75 Stucco 5.5 X 22 download icon view icon
VE7522FB 7.5" x 22" FOAM BACK FLANGE SET BACK 1-1/2" 119 Foam Back 7.5 X 22 download icon view icon
VE7522FC 7.5" x 22" FIBER CEMENT FLANGE recessed 3/8" 119 Fiber Cement 7.5 X 22 download icon view icon
VE7522FF 7.5" x 22" FLANGE FRONT 119 Standard 7.5 X 22 download icon view icon
VE7522S 7.5" x 22" STUCCO SET BACK 3/4" 119 Stucco 7.5 X 22 download icon view icon
VFS414FB 4" x 14" FOAM BACK FLANGE SET BACK 1-1/2" 24 Foam Back 3.5 X 13.5 download icon view icon
VFS414FC 4" x 14" FIBER CEMENT FLANGE SET BACK 3/8" 24 Fiber Cement 3.5 X 13.5 download icon view icon
VFS414FF 4" x 14" FLANGE FRONT 24 Flange Front, Retrofit 3.5 X 13.5 download icon view icon
VFS414S 4" x 14" STUCCO SET BACK 3/4" 24 Stucco 3.5 X 13.5 download icon view icon
VFS614FB 6" x 14" FOAM BACK FLANGE SET BACK 1-1/2" 41 Foam Back 5.5 X 13.5 download icon view icon
VFS614FC 6" x 14" FIBER CEMENT FLANGE SET BACK 3/8" 41 Fiber Cement 5.5 X 13.5 download icon view icon
VFS614FF 6" x 14" FLANGE FRONT 41 Flange Front, Retrofit 5.5 X 13.5 download icon view icon
VFS614S 6" x 14" STUCCO SET BACK 3/4" 41 Stucco 5.5 X 13.5 download icon view icon
VFS814FB 8" x 14" FOAM BACK FLANGE SET BACK 1-1/2" 62 Foam Back 7.5 X 13.5 download icon view icon
VFS814FC 8" x 14" FIBER CEMENT FLANGE SET BACK 3/8" 62 Fiber Cement 7.5 X 13.5 download icon view icon
VFS814FF 8" x 14" FLANGE FRONT 62 Flange Front, Retrofit 7.5 X 13.5 download icon view icon
VFS814S 8" x 14" STUCCO SET BACK 3/4" 62 Stucco 7.5 X 13.5 download icon view icon

*Some Vulcan Vent foundation vents, eave vents, and soffit vents are in multiple categories because of cross-application capability of certain models.

Happy Clients
Testimonials

Susan Oddo
Susan Oddo
2023-12-04
We called to find out if the Vulcan vents would meet the California ember retardant standards for fire. Nate Oliver took our call and spent nearly half an hour providing us with in depth information, guiding us through their website to view and discuss each alternative and even taking us to another website to view the Vulcan product on it. He discussed different options for installing the vents and the specific type of caulk we needed that also met the fire-wise requirements. Then he guided us to the section where we could download the documentation for our insurers. We came away from this conversation with exactly what we needed and the documentation to back it up. I can't say enough good things about Nate's customer service. His knowledge was remarkable, his eagerness to ensure that we ordered the exact right vent was so reassuring, and we immediately posted the Vulcan Vent information on our neighborhood Facebook site so that others in our fire-prone area can obtain the right products for their venting needs. If I could give 10 stars I would.
Sandie Hewston
Sandie Hewston
2023-11-15
After a few months of having the new Vulcan Vents installed in our eaves, I am extremely impressed with the updated design. The 1/8” fine mesh on the outside prevents insects from getting into the ‘honeycombs’ and the 1/4” mesh on the inside adds coverage from attic side to the ‘honeycombs’ without reducing airflow. The ingenious design allowed plenty of airflow to the attic through this past summer, but if a fire were to come our way, it is comforting to know that these same vents will expand and close off, preventing embers or direct flame from being able to enter the attic. A bonus to the design, as you can see in the picture below, is that the thickness of the vent prevents being able to see into the attic and preventing attic insulation from getting pushed up against the outside screen, which somehow tends to happen whenever access is made to attics. Aesthetically and design-wise, these vents provide a solid home hardening solution that is easy to install. These vents are a must in my opinion for any homeowner who has any plants near their home that could generate significant heat during a wildfire. The combination of the 1/8” mesh and the coating that expands and cuts off all airflow into the attic when exposed to radiant heat are the perfect combination to prevent embers, radiant heat, and direct flame from entering the attic space. My experience with this local company (Loomis, California) is that they have excellent customer service and go above-and-beyond to ensure that their customers are satisfied with the quality of their product.