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Old 02-04-2012, 04:28 PM   #1
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How to build a soffit?

I need to build a sofitt for a new run of dryer vent (see here). I've never built a soffit before--what are some tips I should know? General layout attached. 10ft length, will conceal 4" rigid duct.

Particular questions:
- What are the code considerations I should be aware of? (U.S.)
- Any particular way to tie into the framing?
- I'd like to install cabinets below the soffit (room is an office). Are there standard dimensions I should use?

Any advice or helpful links appreciated!

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How to build a soffit?-soffit.jpg  


Last edited by elcaminolee; 02-04-2012 at 04:29 PM. Reason: added link
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Old 02-04-2012, 04:41 PM   #2
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if its just to hide a 4" vent pipe the easiest way is to fasten a 2x2 to the ceiling first, then hang a peice of drywall cut to with off the 2x2.. with another 2x2 on the bottom edge.. also do the same thing against the wall then cover it over with drywall.

you can also ladder frame it with 1 5/8 steel studs


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Old 02-04-2012, 04:53 PM   #3
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Not sure why you need one for a chase, but any time I have to build one, (mostly when trying to cover new HVAC ducts in old houses) I try to make them look that they were suppost to be there.
I would make it come out far enough to be able to add can lights to light up the area over the counters.
The whole frame can be made out of 2 X 4's except the long span that's free hanging from wall to wall. I would use a 2 X 8 standing on end to support the drywall.
Use 5/8 drywall so there's no sag. Your better off buying a 12' piece and cutting it so there's no seam.
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