About the Vulcan Vent

The Vent That Protects
The founders at New Cal Metals, Inc. have worked closely with the inventors and chemical engineers at Firefree Coatings Inc. to bring to market this advanced vent solution. When you buy a Vulcan Vent you help your house protect itself from flame and embers. Combining our quality vents and Vulcan fire stopping honeycomb matrix core with stainless steel ember catching screen has produced unique and remarkable results.
FireFree Coatings, Inc.
Firefree Coatings, Inc.

Quick response time from the vent that protects.

At left: Graph data captured from actual test. The quick response time of the intumescent coating in stopping fire ‘cold’ from reaching the attic space, due to expansion of the mesh. The blue line shows the results of a standard vent and the bottom three lines show the results of three different Vulcan Vents.
After the cells close off, they become molten and solid. Neither fire nor embers can penetrate.

The vent is designed to protect against flying embers even before mesh closure. In many cases embers will attack a home before fire ever comes near, so this feature is very important.

The patented Vulcan is: “Rated for use as materials for exterior wildfire exposure in Wildland Urban Interface (WUI) fire areas.” Under Ch 7a. California WUI building code calls for a vent that will stop floating embers from entering the attic through the eave or soffit vents and at the same time prevent fire from passing through. The Vulcan Vent has passed ASTM E 2886! The test ‘evaluates the ability of exterior vents that mount vertically or horizontally to resist the entry of embers and flame penetration through the vent.’ (external site) Two things make the Vulcan Vent different: a smaller mesh size and an active defense measure against flame. Once the mesh fully expands in the heat, zero flame passes through. The process uses intumescence. The mesh is coated in a formula that will expand and close off completely (see more info below). See the test report and CalFire listing.

Did you know...

The core of our fire and ember safe vents are manufactured out of high grade aluminum honeycomb and coated with an intumescent coating made by Firefree Coatings. The intumescent coating is designed to quickly swell up and close off when exposed to high heat. The expanded material also acts as an insulator to heat, fire and embers.

As shown Below, the hexagonal coated mesh closes off at higher temperatures, sealing your home’s attic and roof from external fire.

Vulcan self-closing vent: Fine mesh screen stops ember entrance. When exposed to flames, the fire resistant coating on the inner honeycomb matrix will expand and effectively fill the space between the cells, creating an effective barrier. Also built and tested to be effective defense against ember storms.

Standard vent: Always open, with one layer of protection at most from only the largest of airborne objects. Not effective at preventing fire from entering attics and basements, resulting in an encompassing fire. Therefore not recommended or permitted in buildings near the Wildand-Urban interface.

Let's study
The video is intended to show how quickly and definitively the Vulcan Vent closes off in heat. A minute and a half in and one attic is already reaching extreme temperatures.

Our vent frames are industry standard frames so there is little or no learning curve for installers & contractors. Our goal is to provide people with the vents they need to secure their homes with additional safety against wildfires and give them piece of mind from knowing that their home is protected by a product that works! 

Commonly asked:

Are you claiming the Vulcan Vent will protect my house from ANY AND ALL wildfires?

No. The Vulcan Vent is a “first line of defense” against embers and exterior flame.

Can I paint the Vulcan Vents?

Yes, with caution: Ensure that paint does not clog, either the 16-16 rear mesh, or the honeycomb matrix and the perforated vent face. Please paint the Vulcan Vents with this in mind. 

Which side of the Vulcan Vent faces into the attic or crawl space?

The finer 16-16 SS mesh side faces to the attic side or crawl space side.

At what temperature does the vent close?

The vent closes when the sustained temperature of the intumescent matrix reaches about 300 degrees C. Afterwards the closure is very fast.

What embers is the screen made to catch?

The inner screen catches embers from burning vegetation (not metals) that have enough mass capable to ignite the interior.

Where can I find the manufacturer warranty?

Yes. For details, see the warranty section on the downloads page.

Do Vulcan Vents have a patent?


What other products other products that can help improve the fire protection of structures exposed to wildfires does Firefree Coatings make?

Check out the Firefree Exterior System at www.firefree.com

Airflow unrestricted