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Old 02-24-2007, 11:52 PM   #1
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Remodeling Garage


I am planning on finishing the upstairs of our Garage. I need to find out if the floor joists are strong enough to hold the wait of the room. The joist are 2x6's. The garage is 28' wide and the joists have a i-beam running under them at the 14' center with a jack supporting that in the center. Would this be strong enough for a bedroom?

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Old 02-25-2007, 10:37 AM   #2
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What is the joist spacing measurements?
Do you have a finished ceiling in the garage?
Can you post a quick layout with measurements of the proposed bedroom including closets?


Last edited by Darylh; 02-25-2007 at 10:39 AM. Reason: Forgot a question
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Old 02-25-2007, 09:29 PM   #3
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The joists are spaced at 16 centers the garage does have a finished ceiling and like I mentioned before there is a center beam running across the entire width of the garage at 12 feet.
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Old 02-26-2007, 08:19 AM   #4
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12 - 14 foot span on a 2x6 is pushing it but if you keep the weight down up there ( dressers and so on,) place blocking every 4 feet and use 3/4" sheeting you will have a decent room but if it was me i would see about 2 more beams to have a great stong floor that you could do almost anything up there.
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Old 02-26-2007, 01:49 PM   #5
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Code requires 2x8's in order to support a live load there.

You aren't allowed to do something like that unless you have a min. of 2x8's for joists - at least in my neck of the woods....

Contact your local building dept. to find out. You don't have to tell them who you are, just ask....

Last edited by AtlanticWBConst.; 02-26-2007 at 02:27 PM.
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Old 02-26-2007, 01:50 PM   #6
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If they require 2x8's as I would assume: You can remove any plywood floor sheathing that may be there, and beef up the 2x6's by placing the 2x8's next to the existing 2x6's (sistering). Just 'cut' the corner off the top ends to accomodate the roof-line pitch.

Make sure that the new 2x8's are solidly sitting 'on top' of the exterior wall top plates.... next to or ontop of the studs that are making up the walls of the garage. This point is key for structural stability ....

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Old 02-27-2007, 10:17 AM   #7
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Thanks, thankfully there isn't much flooring up there and the stuff that is up there I would have had to rip up anyway. Would I nail the 2x6's to the 2X8's on the sides?
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Old 02-27-2007, 06:24 PM   #8
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Quote:
Originally Posted by jjones78 View Post
Thanks, thankfully there isn't much flooring up there and the stuff that is up there I would have had to rip up anyway. Would I nail the 2x6's to the 2X8's on the sides?
If you are referring to 'sistering' the wider joists: Nail the new 2x8's to the existing 2x6's, additionally: you could use some beads of construction adhesive, tho it is not necessary.

Also, toe nail them, (if you can reach) to the top plates.
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Old 02-28-2007, 07:06 AM   #9
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Have you considered what type of flooring will go in this new space? For instance if you wanted say tile, their are certain requirements regarding the joist deminsions.....

Good luck, sounds like a nice project.

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