Dormer Vents

Dormer vents built to protect.

Dormer roof vents allow heat to escape from the vent itself and are important to properly cool attic space. However, because dormer vents are raised, they are a common entry point for dangerous embers. By equipping dormer vents with Vulcan Vents, the home has better protection from floating embers that fly before a fire. 

Vulcan Vents carries durable, attractive,
fire-resistant dormer vents including:

  • Low Profile “Eyebrow” Vents
  • Can be used as an off ridge vent designed for sloped roofing or a flat roof as an air exhaust vent or intake vent
  • Half-Round Dormer Vents or “Round” Vents
  • Can be used in conjunction with horizontal vents for proper ventilation
  • Retrofit Kits for Existing Vents

All our vents have various NFVA (Net Free Ventilation) sizes indicating the amount of open ventilation to allow airflow, measured in square inches. 

fire Resistant Continuous Vents - Providing necessary attic ventilation but self-closing when it matters most
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.

dormer vents alllow airflow while blocking vulnerable spaces

Fire safety starts with
the home’s venting.

Vulcan Vents dormer vents are made of corrosion-resistant G90 galvanized steel and feature an ember-catching mesh with an intumescent coating that expands and barricades when fire is near. 

Vulcan Vent

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
VDHR1224 12" x 24" HALF ROUND dormer VENT 90 Standard N/A download icon view icon
VDHR1224R 12" x 24" RETROFIT HALF ROUND dormer VENT W/ SOFT ZINC HOOD 90 Retrofit N/A download icon view icon
VDHR918 9" x 18" HALF ROUND dormer VENT 51 Standard N/A download icon view icon
VDHR918R 9" x 18" RETROFIT HALF ROUND dormer VENT W/ SOFT ZINC HOOD 51 Retrofit N/A download icon view icon
VDLR419 4" x 19" LOW PROFILE VENT "EYEBROW" 52 Standard N/A download icon view icon
VSB1212 12" x 12" WITH 3" FLANGES ON ALL 4 SIDES 105 Sub Base 13 X 13 download icon view icon
VSB7519 7.5" x 19" WITH 3" FLANGES ON ALL 4 SIDES 108 Sub Base 8 X 20 download icon view icon
VSB8585 8.5" x 8.5" WITH 3" FLANGES ON ALL 4 SIDES 54 Sub Base 10 X 10 download icon view icon

Happy Clients

Susan Oddo
Susan Oddo
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
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.