Small water leak from bathroom fan??

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Posted by: from Moose Jaw
1/11/2014 at 11:56:10 PM

Very cold weather lately and last night a small leak from bathroom ceiling fan/vent. Possible condensation in venting system.

Will it stop? Should I call someone to check it out? Who should I call?

Please advise and thank you.

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Date/Time1/12/2014 at 9:37:13 AM

Hi Bob,

The condensation will be inside the duct work as the air may be leaking past the flapper in the fan itself. If you run the fan for 15 minutes or so, you will probably evaporate the moisture and drive it all out. This time of year it never hurts to run the fan after a shower / bath for an extra 15 to 20 minutes to clear out all of the humidity and hopefully avoid this issue.

Good Luck with it!

Jim Kuzma

Kettleby Handyman Services

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Date/Time1/13/2014 at 10:01:47 PM

Hi Bob.

If the vent is running through unconditioned space, the vent pipe should be insulated. This would help prevent condensation.


Kingsway Construction Inc

Glenn Rosborough

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Gilbert from Total Home in Kemptville
Date/Time1/16/2014 at 12:12:33 PM

Hello there,

Yes definitely insulate the exhaust fan pipe and also there are some better quality Vent Hood ( or wall Cap ) that have a better seal so cold air does not get in.

This one is for the wall but there are some good ones for a roof as well.

The EcoVent by Broan is the only exit vent to feature the patented floating ball check valve. This award winning innovation improves air fow efficiency, reduces heating costs and provides an airtight thermal seal that prvents condensation in ducts while eliminating backdrafts.

- Noiseless: provides virtually silent operation even in strong winds

- Secure: Grid and ball prevent animal intrusions

Sold at Home Depot.



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