I am doing a job where the architect specified Cor-A-Vent for ventilation in front of the soffit framing. We have finished the framing and roofed the project and are about to install the venting, fascia, and gutters. The homeowner, after seeing the Cor-A-Vent before we’ve installed it, expressed concern that the tiny bees we get here (Portland, Oregon) in summer will clog the corrugations of the Cor-A-Vent by putting mud over their egg in the holes.
I have used Cor-A-Vent many times in similar situations, and, quite honestly, I’ve never thought about it. I have seen the vents many times filled with paint, but that’s another issue, and the homeowner will be doing the painting on this job. I cannot really argue with the homeowner here without evidence, and if it were summer, I’d place some test pieces out to see how the bees react. In the past, I’ve seen how tenacious these bees are when I’ve been pulling nails out of a board and the bees will immediately start plugging the holes on the other end the board before you’ve even finished with the board – they are like gnats, but I have a certain affection for them, being sort of fellow house builders.
The architect, of course, never considered this a problem before and is not concerned. We have suggested to him that we substitute perforated strip venting, but the architect does not like the way it will look on this 101 year old house.
Does anyone have any experience with this as an issue? Please look at the attached details and let me know if you have any alternative suggestions.