How do V2 Vents work?

V2 Vents protect vulnerable ventilation openings with a layered wildfire defense system. The stainless steel ember mesh helps block wind-blown embers before they can enter the structure. When wildfire heat reaches critical temperature at the vent, the intumescent honeycomb matrix expands and forms a barrier that helps block heat and flames at the opening.

The result is a fire and ember-resistant vent built for home hardening, WUI construction, retrofit work, remodels, and additions.

Blocks wind-blown embers before they can enter the structure (no activation required). Back Layer: Stainless Steel Ember Mesh Expands under wildfire heat to help block heat and flames at the vent opening. Middle Layer: Intumescent Honeycomb Matrix Faces exterior and adds strength and helps protect against pests and debris. Front Layer: Pest-Resistant Protection Mesh Result: Layered Ember, Heat, and Flame Defense
Temp Honeycomb Ember - how fire resistant vents works

Designed to Block Embers First, Then Heat and Flames

Most homes ignite during wildfire because embers find small openings and reach combustible materials inside. V2 Vents are designed to stop ember intrusion first. If heat and flames reach the vent, the intumescent honeycomb matrix activates and helps close off the opening before fire can move deeper into the structure.

Your Wildfire Defense
Includes Your Vents

Vent openings are small, but they can become major wildfire vulnerabilities. V2 Vents are built for the high-risk ventilation areas around the home, including roof vents, dormer vents, eave vents, soffit vents, louvered vents, foundation vents, and other exterior vent openings.

home vents location graphic

Tested
Wildfire Tested for Embers, Heat, and Flames

V2 Vents are tested and listed to ASTM E2886 / 2912 for wildfire exposure, including embers, flames, and radiant heat. We test horizontally and vertically! Our lab performance results have been evaluated and confirmed by 3rd party agencies to meet the criteria outlined in the latest wildfire code requirements.

Code-Aware
Built for WUI and Home Hardening Requirements

V2 Vents are built for projects where code-aware product selection matters. They support California CWUIC / Chapter 5 requirements, legacy Chapter 7A references, national WUI applications, and IBHS Wildfire Prepared Home compliance paths.

Codes and Compliance

Airflow Champion!

FIRESTORM VS THE COMPETITION

Corbett and Grace Lunsford from ‘Home Diagnosis’ TV series managed to get their hands on the 3 leading fire and ember-resistant vents. This is a comparative, airflow performance analysis of each type of technology currently available.

  • Option #1: Honeycomb matrix (intumescent coating)
  • Option #2: metal baffles (intumescent strips)
  • Option #3: silica fibers

Restricting your home’s ventilation can lead to mold and increased energy costs. With more airflow per vent, you’ll likely need less of them for your home to breathe properly. This will also reduce labor costs if you’re retro-fitting or facing an inspection by the fire marshal. V2 Vents, just makes more sense!

What Makes V2 Vents Different?

Fire Resistant Vents - Highest airflow - Our matrix allows for exceptional net free vent area - NFVA

Airflow

V2 Vents are engineered for high net free ventilation area, helping reduce the airflow penalty common with fire and ember-resistant vents.
Fire Resistant vents - Smaller mesh size to catch even the smallest embers

Stainless Steel Ember Mesh

Corrosion-resistant stainless-steel mesh helps block small wind-blown embers before they can enter the vent opening.
Fire Resistant Vents - Intumescent Formula Coating That Expands and Closes Completely to Outside Fire Threat.

Intumescent Honeycomb Matrix

The heat-activated honeycomb matrix expands at critical temperature to help block heat and flames at the vent opening.
intumescent coating honeycomb vent

Inside the Intumescent Honeycomb Matrix

The core of a V2 Vent is a honeycomb matrix coated with intumescent material. During normal conditions, the matrix remains open. During wildfire exposure, heat activates the coating (not embers), causing it to expand and help seal the vent opening against heat and flame intrusion. This only happens at critical temperatures caused by high heat attack and flames.

V2 Vents vs. Standard Vents

V2 Vents

V2 Vents are built for wildfire-prone construction and home hardening work. They combine stainless steel ember mesh with a heat-activated intumescent honeycomb matrix to help block embers, heat, and flames at the vent opening.

Standard Vents

Standard vents are designed for basic ventilation, not wildfire defense. Most do not include ember-blocking mesh, heat-activated protection, or tested flame and radiant heat resistance, making them a poor fit for WUI and wildfire-prone applications. Mesh only products are NOT recommended for flame defense.

It’s All About Response Time

During wildfire exposure, embers can arrive before direct flame contact. V2 Vents address that sequence with ember-blocking mesh first, then heat-activated intumescent protection when temperatures rise to 450-500 degrees. This sequence helps protect your ventilation openings with both, a passive ember protection layer and a reactive flame and heat protection layer.