Ember-Resistant Vents Compared: Brandguard, Vulcan & O'Hagin

If you've started looking into ember-resistant vents for your San Diego home, you've probably run into three names: Brandguard, Vulcan, and O'Hagin. All three make quality, fire-tested vents, and we install all three. But they protect your attic in genuinely different ways, and the best choice depends on your roof. Here's the plain-English version.

What they all have in common

Every vent worth considering for a fire zone is tested to ASTM E2886 — the standard that blasts a vent with a stream of embers and direct flame to confirm nothing gets through. That testing is what lets these vents meet California's Wildland-Urban Interface (WUI) code. So whichever you choose, you're getting lab-proven ember resistance. The differences are in how they do it and where they fit best.

Brandguard: a baffled path embers can't follow

Brandguard vents use a baffled internal pathway. Air can still flow in and out, but embers and flames can't travel in a straight line through the vent, so they're stopped before they reach the attic. Brandguard makes a wide range of vent types — attic, eave, gable, and dormer — which makes them a flexible choice for covering every opening on a home with matching products.

Vulcan: a vent that seals itself shut

Vulcan vents take a different approach. In normal conditions they ventilate like any vent, but they carry an intumescent coating that expands and seals the opening shut when it senses the high heat of an approaching fire. That self-sealing behavior makes them a strong fit for eave and soffit vents — the low, exposed intake openings where embers blow in along the ground.

O'Hagin: low-profile vents that disappear into the roof

O'Hagin is known for low-profile attic vents that sit nearly flush with the roof, in versions made to match specific tile and shingle profiles. They offer ember-resistant models that bring the same fire protection while staying almost invisible from the street — a nice fit on tile roofs and on homes where appearance matters.

So which is right for your home?

There's no single winner — it comes down to your roof type, where each vent sits, and how visible they'll be:

• Tile roofs often pair best with O'Hagin's low-profile tile vents or matching Brandguard units.
• Exposed eaves are a great use for Vulcan's self-sealing intake vents.
• A whole-home upgrade may mix products to cover every opening with the best fit.

That's exactly the kind of call we help homeowners make every day. We'll look at your actual roof and recommend the right vents for it — not just whatever brand we have in the truck.

Curious which would suit your home? Request a free inspection or give us a call and we'll walk you through the options.