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Old 08-21-2012, 09:12 PM   #1
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Repairing bird damage to bathroom vent


Birds have made nests in the bathroom vent outlet of our recently purchased house. I took off the external vent cover and found the ductwork (4” uninsulated plastic accordion dryer duct) all torn to pieces to at least 18” into the wall (the ducts are between the first storey ceiling and 2nd storey floor and run horizontally out through the hardiplank siding of the house. Any ideas on how I can get some ducting of some sort from the dryer duct 18”-24” into the house through a 4 “ round exterior wall hole? I was thinking of using some 3” rigid duct and trying to get it into the 4”plastic vent (hoping air would take the path of least resistance through the 3”duct). I realize this isn’t optimal but I’m not prepared to rip out the ceiling drywall or the exterior siding to do this.

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keith
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Old 08-21-2012, 09:49 PM   #2
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Repairing bird damage to bathroom vent


Your "little" font is a bid difficult to read. NO, you can't reduce the size of the vent. And you need to replace that vinyl duct with metal ASAP. Prepare yourself for a bit of demo and repair. You can't just stick in a 3" pipe and hope for the best; the dryer lint will fill the cavity and create a new set of problems. Get out the hammer and the saw.
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Old 08-22-2012, 03:49 PM   #3
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Repairing bird damage to bathroom vent


Cut a 6x14" hole in the drywall to make the connection to 4" hard pipe then stick a return air grill on to cover the hole. If it was a dryer vent you would want to replace the whole thing with metal but no need since it's just a bath fan vent. Once fixed get the screen back in the cover or they'll do it again.
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Old 08-22-2012, 04:30 PM   #4
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Repairing bird damage to bathroom vent


Hi guys, it was a bathroom exhaust vent.

Is it a straight shot from the bathroom vent fixture to the exterior and how far is it?
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Old 08-22-2012, 05:07 PM   #5
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Repairing bird damage to bathroom vent


Thanks all. I guess I could put a fake exhause vent cover over a cut in the ceiling. Will need to do some measurin' and figurin' this weekend

Keith
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Old 08-22-2012, 07:05 PM   #6
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Repairing bird damage to bathroom vent


So sorry....didn't catch that it was a "bath vent" (told you that font was too small).
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Old 08-22-2012, 08:40 PM   #7
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So sorry....didn't catch that it was a "bath vent" (told you that font was too small).
Yeah, don't know what happened there!
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Old 08-23-2012, 03:34 PM   #8
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Repairing bird damage to bathroom vent


If you use aluminum hard pipe,you will never have to replace it again.This might be the time to also replace the fan with an Energy Star one that cost about 1/4 to operate than the one you have now.
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Old 08-23-2012, 04:05 PM   #9
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Repairing bird damage to bathroom vent


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Hi guys, it was a bathroom exhaust vent.

Is it a straight shot from the bathroom vent fixture to the exterior and how far is it?
I'll ask this again, is it a straight run from the bathroom vent fixture and how far is it?
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Old 08-23-2012, 06:25 PM   #10
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Repairing bird damage to bathroom vent


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I'll ask this again, is it a straight run from the bathroom vent fixture and how far is it?
Going up there this weekend and I'll get exact configuration and details.
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Old 08-29-2012, 09:51 PM   #11
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Repairing bird damage to bathroom vent


Well, got some more specifics on the layout. The toilet vent duct is a straight shot out to the exterior wall vent - about 12 feet from interior vent motor assembly to the exterior wall. The floor between the first and second storey is actually a 2 foot high space with an engineered truss system instead of the standard 2x10 joists. If I could get the vent motor out from inside the toilet, I could fish a new duct no problem. Not being a retrofit, however, I think I would need to take out drywall in the toilet celing to get at the duct to run a new one.

The bathroom vent is a little more complicated. Its a 10 foot run parallel to the outside wall before it turns 90 degrees to a 6 foot run out to the exterior wall. I think I can stretch this duct to reach the new vent, though. I'm going to try to use duct connectors to attach new 2 foot runs of duct to two new exterior vents.
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Old 08-29-2012, 09:58 PM   #12
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Repairing bird damage to bathroom vent


Pull the cover off of the vent and look around...many can be removed with the drywall intact....they tend to fail and need replacement. If not, perhaps just a bit of dryall would need to be cut and repaired at the joists. Got a picture?
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Last edited by Missouri Bound; 08-30-2012 at 07:07 PM.
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Old 08-30-2012, 05:12 PM   #13
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Repairing bird damage to bathroom vent


Let me take a look this weekend.
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