attic insulation

Old 12-05-04, 07:12 AM
Stephen Mark
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attic insulation

I have purchased a 9 year old home. The master bathroom on the first floor is below the attic. The bathroom light-exhaust fan unit is like a funnel sending freezing air into the bathroom. I went into the attic and noticed that although the entire attic has insulation, none was placed over the light-exhaust fan fixture. Is it safe to place insulation over a light fixture? I hope this will decrease the freezing air coming into the room. Thank you, Stephen Mark
Old 12-06-04, 12:12 PM
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some fan/light units are designed to be insulated around and some are not. I would try to find out what model housing it is before insulating on top of it. if it was not designed to be insulated then it will likely overheat if insulated. So you most likely have two options, replace the existing unit and insulating around it or you could install a one way baffle in the vent hose (like my fan has) to prevent air from traveling from backwards into your living space.

If the air is leaking around the fan than you could most likely insulate around the unit housing no matter what type of unit it is.

Hope this helps,
Old 12-06-04, 12:25 PM
Ed Imeduc's Avatar
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Id drop the fan unit down out of it there and see if the damper in it is closeing all the way. lots of time the flipper like damper can get stuck. Its right thereafter you take the fan part out. This does go on and vent out the roof I hope. also check like bbieger said on insulation .


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