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Water Dripping from your Exhaust Fan?

2/27/2019

 
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This past winter brought about some crazy cold temperatures and I received a few emails from some friends of mine who were concerned because water was dripping from the exhaust fans in their bathrooms. Actually, concerned isn’t the right word…they were totally freaked out because they assumed it meant their roof was leaking. Occasionally that’s a correct assumption but usually the cause is something much easier to diagnose and fairly simple to fix.
 
Your first step is to head up into your attic. Yeah, I know. It’s dark, smelly, and full of itchy insulation but in the attic is where your answers will be found so suck it up and get up there. The biggest piece of advice I can give you is to make sure to walk on the tops of the ceiling joists and not on the drywall itself. If you walk on the drywall, you’ll end up like Clark Griswold in the 1989 classic Christmas Vacationexcept you likely won’t land on Rusty’s bunk bed. 
 
Next, locate the exhaust fan duct that hopefully travels from the fan in the ceiling of your bathroom and terminates to the exterior. If it doesn’t terminate to the exterior you’ve got more problems but that’s for another blog post. So, in the interest of me getting another blog post out of this let’s just assume, for the time being, that the duct terminates to the exterior of your home.
 
After locating the duct give it a once over and if you can see metal that means it is not insulated and, well, there’s your problem. What’s happening is the warm moist air in your bathroom is being drawn through the fan and into the duct where it condenses inside the cold uninsulated duct and reverses course and drips back into your bathroom.
 
The fix is pretty easy…head to your local home improvement store and buy duct insulation and some zip ties. Then wrap the insulation around the pipe and attach it with the zip ties.
 
That’s all there is to it.  


This article is for general information purposes only. Rick Kelley Builders makes no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability, or availability of any information contained herein.

    Author

    Jeremy Kelley is a home builder and remodeler in the Columbus, OH area.  He is an avid volunteer, family man, and knows the difference between your and you're.

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614.437.2013  
7521 Concord Road 
Delaware, OH 43015
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