ProMatcher

Can a bathroom fan be vented into the attic?

Top Answer: No (65% of 38 votes).
Can a bathroom fan be vented into the attic?
Yes
31%
No
65%
Not sure
2%

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Updated on December 29, 2015

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Comments From Our Pros

Answer: No
Explanation: No, a bathroom fan should never be vented into the attic. That warm, moist air gets trapped up there and can lead to mold growth, wood rot, soggy insulation, and even structural damage over time.
Grellis Construction
Answer: Not sure
Explanation: Coding requires all venting to go outside
KRAOS LLC
Answer: No
Explanation: no it needs to have an access way out of the house
thorns construction services llc
ProMatcher
Answer: No
Explanation: Not ICC 2012, must go through the lid.
Misija construction
Answer: Yes
Explanation: As long as the attic is properly vented and there are no obstructions at the fan, it would be acceptable
iDesign Interiors, LLC
Answer: No
Explanation: A bathroom fan must exhaust out of the attic. Hot moist air in the attic could cause mold.
Ward Kitchen & Bath
ProMatcher
Answer: No
Explanation: You will cause mold and damage the insulation and drywall beneath it.
Relux Construction LLC
Answer: No
Explanation: Needs to get odors and moisture outside
Eric Dahl, Building Design & Drafting
Answer: No
Explanation: should be set to outside
Dmar.Remodeling.llc
ProMatcher
Answer: Yes
Explanation: I don't recommend
Modern Creations Construction