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Old 02-12-2014, 01:47 PM   #1
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What is A Properly Ventilated Bathroom?


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What is considered a properly ventilated bathroom? I have a ventilation fan, but after a shower the walls are soaked. Is a properly functioning fan supposed to keep the room dry?

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Old 02-12-2014, 02:01 PM   #2
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What is A Properly Ventilated Bathroom?


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Hi

What is considered a properly ventilated bathroom? I have a ventilation fan, but after a shower the walls are soaked. Is a properly functioning fan supposed to keep the room dry?
There's a good chance your fan is working fine, but there's nowhere for it to pull air from. Learned this myself. An exhaust fan can't pump out more air than the room can pull back in (a dinky little exhaust fan isn't going to turn yoru bathroom into a vacuum... ). Find some way for fresh air to come into the room as well as for the wet air to get out, and you'll be fine.

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Old 02-12-2014, 04:06 PM   #3
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What is A Properly Ventilated Bathroom?


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What is considered a properly ventilated bathroom?
An open window works incredibly well.

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Is a properly functioning fan supposed to keep the room dry?
As noted by BobMan... it's about air movement (changes).

If the room is 7'x9'x8' (504cu ft)...
even the simplest and least expensive 50CFM exh fan will give you a complete change in 10 minutes... if it has air to change.
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Old 02-12-2014, 04:41 PM   #4
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What is A Properly Ventilated Bathroom?


There's suppose to be a 1" gap under the door so the fan is not a creating negative pressure.
It would be like sucking on a straw with your finger over the tip.
Why open a window and let in cold air? It would work, but the room would get colder.
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Old 02-12-2014, 04:48 PM   #5
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What is A Properly Ventilated Bathroom?


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Hi

What is considered a properly ventilated bathroom? I have a ventilation fan, but after a shower the walls are soaked. Is a properly functioning fan supposed to keep the room dry?
No typical residential bath exhaust fan will completely expel all the moisture laden air from the room before SOME of it has had a chance to condense onto a cooler surface like windows and even walls.

Have you made sure that the vent to the outside is not plugged??
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Old 02-14-2014, 04:46 AM   #6
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What is A Properly Ventilated Bathroom?


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I have a ventilation fan, but after a shower the walls are soaked. Is a properly functioning fan supposed to keep the room dry?
Typically the shower walls will be wet after a shower. My three shower walls always are and the glass door.

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