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Posted by RBM on January 12, 2008, 2:01 pm
I'm pretty sure some, or all of the Panasonic fans will go in from beneath,
just be sure the opening isn't to close to any roof rafters, as I believe
these fans are around 10 inches in depth
> The house I recently bought did not originally have a bathroom fan,
> however one of the previous owners added one. They did a half-assed
> job like every other project they did to the house. The house is a
> standard ranch from the late 70's with a very low slope roof.
> First, the fan box is not attached to the ceiling joists. It simply
> sits on top of the drywall. However, one edge of the ceiling hole is
> right up against a ceiling joist. That's good. Second, it's obvious
> the fan is not pulling air like it should. There is a hose attached
> to the box, but I'm not sure where it goes. When the fan is run, it
> makes a vibrating noise and there is no pull whatsoever on the
> bathroom door or any other sign it's actually sucking air. If I take
> the fan out and plug it into an outlet, it runs smoothly. I would
> like to install a roof vent, and attach the box like it should be.
> There is little over 1 foot of space between the ceiling drywall and
> the roof, as seen through the ceiling hole. In addition, there is
> lots of blown fiberglass insulation in the attic. Needless to say, I
> hate thinking about going into this attic. I could easily install the
> vent by not going into the attic, but attaching the box is another
> story.
> My question is: is there a fan box available that can be mounted from
> inside the bathroom? I'm thinking of something like the "old work"
> electrical boxes. I have thought about simply running screws through
> the box into to joist. If I must go into the attic, I can probably do
> that provided I wear a respirator and some sort of disposable
> coveralls because of the fiberglass.
> Thanks for any ideas/insight.
>
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> however one of the previous owners added one. They did a half-assed
> job like every other project they did to the house. The house is a
> standard ranch from the late 70's with a very low slope roof.
> First, the fan box is not attached to the ceiling joists. It simply
> sits on top of the drywall. However, one edge of the ceiling hole is
> right up against a ceiling joist. That's good. Second, it's obvious
> the fan is not pulling air like it should. There is a hose attached
> to the box, but I'm not sure where it goes. When the fan is run, it
> makes a vibrating noise and there is no pull whatsoever on the
> bathroom door or any other sign it's actually sucking air. If I take
> the fan out and plug it into an outlet, it runs smoothly. I would
> like to install a roof vent, and attach the box like it should be.
> There is little over 1 foot of space between the ceiling drywall and
> the roof, as seen through the ceiling hole. In addition, there is
> lots of blown fiberglass insulation in the attic. Needless to say, I
> hate thinking about going into this attic. I could easily install the
> vent by not going into the attic, but attaching the box is another
> story.
> My question is: is there a fan box available that can be mounted from
> inside the bathroom? I'm thinking of something like the "old work"
> electrical boxes. I have thought about simply running screws through
> the box into to joist. If I must go into the attic, I can probably do
> that provided I wear a respirator and some sort of disposable
> coveralls because of the fiberglass.
> Thanks for any ideas/insight.
>