I have an educated guess on this thing, but it was raining hard at the inspection and Client was concerned about the wind-driven rain getting in those little louvers there. I explained to him what I thought it was based on the layout of the house and where the downstairs bathroom exhaust fan was venting, which appears to be here. I think the solid piece in the middle protects the vent termination, and the louvers on the side are far enough away so that the exhaust fan can vent. There is a small space between this covering and the concrete shingles underneath so that any rain goes through the louvers, hits the shingles, and simply flows down the roof. The deisgn underneath is such that the vent termination is slightly raised above the shingles themselves so that any wind-driven rain can't get above the lip of the vent termination.
That's my guess.
If anyone has a diagram of the underworkings of this, that would be pretty neat.
Originally Posted By: dspencer This post was automatically imported from our archived forum.
What did the connection in the attic look like? I have been roofing for 15 years and have never seen a roof vent like the one pictured, looks like trouble.
Originally Posted By: jbrown4 This post was automatically imported from our archived forum.
Russel
This is a O'Hagin brand cloaked roof vent. They are very popular here in the Phoenix metro area. The specifics of them as well as installation instructions can be found at: http://ohaginvent.com/ The problems we find with this type of roof vent generally comes from incorrect installation.
Originally Posted By: rray This post was automatically imported from our archived forum.
dspencer wrote:
What did the connection in the attic look like? I have been roofing for 15 years and have never seen a roof vent like the one pictured, looks like trouble.
There was no access to the second-floor subflooring, which is where the downstairs bathroom flue would be. This vent was in the general area of the downstairs bathroom which is why I think it was the bathroom exhaust vent.
