ceiling fan box extension?

mikesjAugust 14, 2008

Here's my dilemma- I've got a plastic ceiling fan box screwed directly into a joist in my living room. I'm in the process of adding a tongue and goove ceiling and am curious if I can attach some kind of extension to the box or if that's against code or would present some other problems that I can't imagine. Another option would be to unscrew the box and put a block behind it to make up the spacing difference.

Any responses would be greatly appreciated!

Thank you for reporting this comment. Undo

they make box extenders, though i am not sure if you cna use them for a fan. is the current box even rated for a ceiling fan?

    Bookmark   August 14, 2008 at 10:50PM
Thank you for reporting this comment. Undo

Yes- it is a fan box.

    Bookmark   August 15, 2008 at 12:19AM
Thank you for reporting this comment. Undo

The plastic box that you have is fan rated only as long as the long screws that come with it are used to hang the fan bracket and they fasten directly to the ceiling joist or rafter. If you use a spacer the long screws no longer have the same amount of threads in the joist, with the threads in the spacer providing no support.

I would guess that removing some drywall along the joist and installing a long spacer that is both screwed and glued to the joist would provide adequate support, as would longer screws. However, both of these technically modify the design of things used as part of the design listing of the fan box.

Common sense says that the longer screws or a well anchored spacer should work fine. While all this seems like simple enough stuff, modifying the fan box mounting in any way voids the UL listing on the box. I'd advise contacting the box manufacturer and getting their recommendations.

    Bookmark   August 15, 2008 at 6:34AM
Thank you for reporting this comment. Undo

I'm thinking that I'll just remove the existing saddle box and add a metal replacement- I need one that extends about 3". An extension ring that attaches directly to the saddle box would make it a quick job, but removing the existing one and replacing it shouldn't take too much time. Thanks for the ideas.

    Bookmark   August 15, 2008 at 3:27PM
Sign Up to comment
More Discussions
Light boxes on/in 6X8 timber floor joists for log home
Just trying to figure how to wire a couple light fixtures/chandelier...
Doorbell goes off by itself.
Can anyone tell me why this would happen? It's a wired...
How to get garage freezer to work in cold weather
I have a 7-year-old GE refrigerator/freezer in my unheated,...
Reuse electrical panel
I replaced a 24 circuit Square D panel with a new 40...
Multiple Fluorescent Ballasts in one light fixture
Hello GardenWeb. I'm not new here, but couldn't log...
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™