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Old 03-07-2013, 07:51 AM   #1
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Bathroom ceiling leak...


Hi everyone,

This morning, when I was brushing my teeth, I felt droplets on my back. I looked up to find that there was water dripping (slowly but surely) from my vent fan. There are little pockets of water around the area as well.

How can I determine where this is coming from?

Is this necessarily a roofing problem?

A friend suggested that it could just be a build up of condensation and told me to run the vent fan for an hour. I'm doing that, now but I have my doubts that it would be that easy.



Regards,

John
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Old 03-07-2013, 07:56 AM   #2
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Bathroom ceiling leak...


I just had a quick peak at my attic crawl space and I realized that I don't even know what I'm looking for. If it was from a hole in the roof, would it be very apparent?

By the way, it's nearing the end of winter so the snow (we got lots of snow recently) is starting to melt if this makes any difference as to what I am looking for or what might be wrong.
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Old 03-07-2013, 08:00 AM   #3
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Bathroom ceiling leak...


Looks like that's been happening for a while.
Going to have to get up in the attic and take a look.
It's best if the line from the fan is insulated so it's less likly to condence before the air can be moved to the outside of the house.
If that insulation up in the attic is wet get it out of there asap and toss it before it molds up.
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Old 03-07-2013, 08:42 AM   #4
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Bathroom ceiling leak...


Found the problem and I apologize now for the lack of terminology. Where the vent connects to the outside tube, it must have ripped off as its no longer attached. There are icicles formed around that area.

What do I do now?

What do I use to reconnect the tube? Just duct tape?

Should I try and remove as much of the icicles as possible?

What happens to the water pockets in the picture?
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Old 03-07-2013, 08:46 AM   #5
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Bathroom ceiling leak...


You use foil tape not duct tape.
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Old 03-07-2013, 08:52 AM   #6
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Bathroom ceiling leak...


Thanks for the help, Joe. Much appreciated.
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Old 03-07-2013, 08:55 AM   #7
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Bathroom ceiling leak...


Joe is correct, make sure the ductwork stays warm while it is within the building envelope, otherwise you will get condensation dripping from the pipe.
I prefer PVC Pipe from exhaust vents when the pipe is to be run through the attic. The joints, if you have any can be glued, and water tight, and plastic is an insulator.
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Old 03-07-2013, 08:56 AM   #8
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Bathroom ceiling leak...


Make sure the flappers working to keep out most of the outside air.
Not there to feel it but if that drywall is now all punky concider replacing it.
Scrape off all that peeling paint.
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Old 03-07-2013, 10:38 AM   #9
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Bathroom ceiling leak...


When I first put an exhuast fan in my bathroom ceiling and ran the exhaust pipe up through the attic and out the ceiling I got this annoying condensation also even with insulating the pipe. My solution was to remove the ceiling fan and install a wall mounted exhaust fan. It has worked like a charm for years now. The only issue with it is ice buildup on the flapper from the moisture exhausted when the temperatures drop into single digits here.
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Old 03-07-2013, 11:08 AM   #10
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Bathroom ceiling leak...


Here are photos of the problem; its now been taped up although it was wet in some parts around so i'm worried the foil tape will fall off.

Also, the amount of ice that formed around it on the second picture. I tried to remove as much of the ice as I could. The insulation was wet around there as well.

What would my next steps be?
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