For our new construction, we're adding a semi-circle ornament to the
gable on the front of our garage. It's a white, vinyl, semi-circle
ornament that looks like a vent. But it will definitely *not*
vent. I've been told that a vent there is not necessary as our garage
has a ridge vent along the entire length of the roof ridge, and that an
extra vent where the ornament will be located will not help and may
only cause complications. So, since it will not be a true vent, my
question is this: Should we be careful to use a faux vent ornament
like a vent but is solid vinyl with no openings to allow
moisture behind it? Or is it okay to use an ordinary ornamental vent
and just not have a hole in the wall behind it?
The reason I ask is because our builder has in stock ornamental vents
that are true vents. They use them whether a true vent is called for
or also when the ornamental vent is just for decoration. They do not
have faux vents in stock. So they are inclined to just use one of
these true vents, but not actually use it s a vent. So behind the
vinyl vent, there would be sheathing and Tyvek. The vent itself
includes the white vinyl ornamental vent and a screen on the back, much
like a window screen.
I know the Tyvek will resist moisture when there is a blowing or
driving rain that causes water to enter the ornamental vent, but is it
wise to use a vent in a case like this? Isn't it just kind of asking
for water issues? Plus junk could get stuck in the vent holes, or even
bats or hornets/wasps nesting, etc. What do you guys think about this?
Thanks in advance for any advice.