Wildfire-prone construction has changed the way project teams think about ventilation. A vent is no longer just an airflow detail. In the wildland-urban interface, vents must also be evaluated as potential ember-entry points and as part of the building envelope’s wildfire exposure strategy.
That shift is increasing demand for WUI-compliant vents across new construction, retrofit work, rebuilding projects, and exterior upgrades. Builders, architects, distributors, and homeowners all need products that support airflow while helping reduce ember, heat, and flame vulnerability.
Why Demand Is Growing
Wind-driven embers can travel ahead of the flame front and enter attics, crawl spaces, soffits, gable ends, and wall cavities through ordinary vents. Once inside, embers can ignite combustible material in areas that are difficult to see and difficult to defend.
As wildfire awareness grows, project teams are asking more specific questions: Is the vent tested for wildfire exposure? Does it preserve airflow? Is the material appropriate for the environment? Is documentation available for plan review and future maintenance records?
What Project Teams Should Look For
- Testing and listing information tied to wildfire vent standards such as ASTM E2886 / E2886M / E2912.
- Noncombustible, corrosion-resistant materials suited to the climate and exposure.
- A design that helps block embers, heat, and flames while supporting required ventilation.
- Clear product data for architects, builders, inspectors, and owners.
- Options for common applications, including gable, eave, soffit, foundation, dormer, and continuous ventilation.
Current California Code Context
Older California wildfire construction discussions often reference Chapter 7A. Current California wildfire construction context now centers on the California Wildland-Urban Interface Code, including Chapter 5 requirements. Local jurisdictions may add requirements, so code review should happen before final product selection.
Common WUI Vent Applications
Continuous, Eave, and Soffit Vents
These openings are close to roof edges and overhangs, where embers can collect during wind-driven wildfire exposure. They require careful coordination between airflow, roof assembly design, and ember-resistant details.
Gable and Dormer Vents
Gable and dormer vents can expose attic spaces directly to wind-driven embers. Product selection should consider the vent assembly, nearby vegetation, roof geometry, and the material condition around the opening.
Foundation Vents
Foundation and crawl space vents can be vulnerable when debris, mulch, decks, or stored materials collect nearby. A wildfire vent strategy should pair vent selection with defensible space and regular maintenance.
How V2 Vents Fit
V2 Vents is a FireStorm Building Products line manufactured by New Cal Metals. The product line combines corrosion-resistant stainless steel ember mesh with the V2 Honeycomb Matrix to help block embers, heat, and flames while supporting airflow.
V2 Vents is tested and listed to ASTM E2886 / E2886M / E2912 for flames, embers, and radiant heat. In coastal and salt-air environments, stainless steel or specialized coatings are generally the better fit than standard galvanized materials.
A Better Specification Conversation
The strongest conversations around WUI-compliant vents are not based on hype. They are based on application, code path, airflow, material durability, wildfire exposure, and documentation. That is what helps builders and design teams make defensible product choices.
For specification support on wildfire vent applications, Build With Us.
