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Old 10-16-2011, 07:22 PM   #1
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Deck - Framing around a bay window - house rim joist changes levels?

Since code does not allow a ledger board to be attached to a bay window cantilevering out from the house, I planned on framing around the window as shown in Fig. 35 at However, in my case, the interior floor level of my house drops immediately on one side of the bay window (slightly sunken family room), and therefore the house rim joist are at different levels on either side of the bay window. How can I frame around this bay window? Any help? I don't feel comfortable trying to find the wall studs and tying into them. thanks
Since the house rim joists are at different levels, I planned on the deck being two levels following the level of the house rim joist.


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Old 10-16-2011, 10:11 PM   #2
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An engineer can design an option that would allow you to attach to a cantilever, we do it on a regular basis. I also attach to wall studs on occasion with no issues. It is of course important to make sure you are going into the center of the stud with ledgerloks (since they are 1/4" dia) and that you predrill straight so you don't get off track and go through the side of the studs.


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Old 10-16-2011, 11:36 PM   #3
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I might add to use an adjustable electrical live-wire locator to find exactly where the wire runs are (usually at knee-level) so not to drill/lag the wire through stud hole. Stud locator will find centers at drywall, transfer measurements to exterior. Drill small diameter pilot hole first, follow with proper size bit for larger lag bolts.

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Old 10-17-2011, 08:24 PM   #4
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Thanks GBR and robertcdf.....I suppose I could always go with a freestanding deck also but I really don't want to go that way.
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