On Aug 29, 12:10*pm, "
wrote:
On Aug 29, 11:06*am, DerbyDad03 wrote:





On Aug 28, 9:23*pm, GoogaICQ wrote:

On Aug 28, 8:33*pm, Jon Danniken .

I can hear the flap fall back into place immediately after the fan is
turned off, and I can also hear the flap fall back into place during
times of a strong wind blowing outside (I'm guessing due to Bernouli's
principle).

Jon

*Sure, strong winds causing a flap makes sense. I used to have that
before the new vent was installed.
But now I'm getting flaps in moderate and slight breezes, which where
I live is very common.

It seems to me that you are going to all kinds of lengths to seal the
vents when the proper thing to do would be to get the contractor back
to fix the root cause of the problem - the vent itself.

Perhaps you need a different vent or a different location.

+1 to that. *I sure would not be eliminating venting
in any of my bathrooms, for obvious reasons....- Hide quoted text -

- Show quoted text -

Had another thought. It's also possible the source of
the noise is not a flap in the roof vent itself. Mine have
no flap there, but the typical bathroom fan has a flap
inside it that closes when the fan is off. It's possible
the new roof vents are larger, oriented different, etc
so that maybe now the breeze is causing the flap in
the fan to make a noise.

That might also explain why it can be heard. I would
tend to doubt that ones located at the end of a hose,
at the roof would be capable of making that much
noise back inside the house. But then, who knows....