WUI ridge vent or alternative?
Climate 3A, just finished retrofitting Vulcan Vents’s eave vents as intakes (not pictured). I’m on the border of a WUI zone surrounded by a preserve. Just knowing of these products is beyond the scope of contractors for my area.
In the past year of researching products, I’ve not found specific ridge vent products meant that’d be ember resistant. The closest is Coravent’s 600-TE (pictured w/ VV’s continuous ridge vent for my style roof), though I have doubts with corrugated plastic being sufficiently fire resistant, plus it doesn’t have enough NFA for the aspect ratio of my roof. Also, there’s still a part of me that doesn’t trust the product enough to stop an ember’s ingress and ignite or smolder the sheathing.
“It’s not hard” to go pick up sufficiently dense wire screen from McMaster-Carr. Figuring out how to securely raise the ridge tile and have it live through yearly 40 mph winds, 60 mph gusts, is also a concern. Roof is currently concrete tile with a “not felt” underlayment from ‘94 when the house was made.
Interior ceilings are a mix of 8’, 10’, and half vaulted with a pitch going between the two. This makes it infeasible to convert the vented attic to a sealed, conditioned air space.
How’d you approach making a fire resistant ridge vent? If the individual products aren’t recognized as WUI listed, will this matter for insurance coverage?