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Old 04-15-2013, 02:16 AM   #1
jmillspaugh
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Default Hanging OSB on Ceiling in shop

Going with 1/2 OSB on ceiling and walls. Question is do I need to run stringers on trusses or can I attach OSB directly to trusses. Its a 24X24 with 12' walls. Trusses are on 2' centers.
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Old 04-15-2013, 05:12 AM   #2
58Yeoman
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Default Re: Hanging OSB on Ceiling in shop

I did mine right on the trusses and it's 24" on center. No sagging yet.
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Old 04-15-2013, 07:51 AM   #3
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Default Re: Hanging OSB on Ceiling in shop

either will work in a garage
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Old 04-15-2013, 08:39 AM   #4
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Default Re: Hanging OSB on Ceiling in shop

I've got a couple of sags, but no big deal.
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Old 04-15-2013, 09:04 AM   #5
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Default Re: Hanging OSB on Ceiling in shop

I'm at 24" OC with 7/16" OSB, no issues. Run it at right angles to the joists.
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Old 04-15-2013, 09:13 AM   #6
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Default Re: Hanging OSB on Ceiling in shop

Quote:
Originally Posted by Falcon67 View Post
I'm at 24" OC with 7/16" OSB, no issues. Run it at right angles to the joists.
Same here, no issues going on 5 years now.

Same some money and muscle and use 7/16" OSB
IMHO
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Old 04-15-2013, 11:22 AM   #7
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Default Re: Hanging OSB on Ceiling in shop

Since you sheet the roof of a house with trusses on 24" centers and 7/16" osb I would do it. You walk around on that roof with that spacing and even pile snow on it.

With the roof deck you also use these metal clips at the sheet edges. Do you guys use the clips?
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Old 04-15-2013, 11:51 AM   #8
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Default Re: Hanging OSB on Ceiling in shop

Were the trusses built to support a ceiling load? You can probably get away with attaching them directly, but if the trusses werent built to support a ceiling load you are weakening the structure. Adding stingers will only make it worse (more weight on the bottom chord).
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Old 04-15-2013, 01:40 PM   #9
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Default Re: Hanging OSB on Ceiling in shop

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Originally Posted by Falcon67 View Post
I'm at 24" OC with 7/16" OSB, no issues. Run it at right angles to the joists.
Same here.
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Old 04-30-2013, 01:34 PM   #10
jmillspaugh
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Default Re: Hanging OSB on Ceiling in shop

Cool thanks all for the info. I attached them directly to trusses and it worked out great.
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Old 04-30-2013, 11:14 PM   #11
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Default Re: Hanging OSB on Ceiling in shop

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Originally Posted by jmillspaugh View Post
Cool thanks all for the info. I attached them directly to trusses and it worked out great.
How about some pics ?
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Old 05-01-2013, 12:03 AM   #12
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Default Re: Hanging OSB on Ceiling in shop

Why OSB on the ceiling when drywall would be just as cheap....and not so flammable?
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Old 05-01-2013, 12:32 AM   #13
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Default Re: Hanging OSB on Ceiling in shop

I attached osb directly to the joists, and I should have used stringers. The boards of the joists are on edge and very narrow. It's not bad until you start the second row, and each row after that gets worse.

If the walls or joists aren't square, or you don't get the osb put on perfectly then you have to trim each sheet so you have room o screw on the next. It was a major pain to do.

If you're careful when putting up stringers putting up the osb will be easy.
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Old 05-01-2013, 02:56 PM   #14
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Default Re: Hanging OSB on Ceiling in shop

I put OSB on the ceiling of my patio cover, how does this happen?
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Old 05-02-2013, 06:49 AM   #15
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Default Re: Hanging OSB on Ceiling in shop

I had it in my last shop, and i am using it again in this one.

Hang it direct to bottom of truss, and run it perpendicular.
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Old 05-02-2013, 07:40 AM   #16
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Default Re: Hanging OSB on Ceiling in shop

I used 1/2" 4 ply plywood. The seams can be touched up with latex caulking.
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Old 05-02-2013, 07:47 AM   #17
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Default Re: Hanging OSB on Ceiling in shop

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Originally Posted by Slednut View Post
I put OSB on the ceiling of my patio cover, how does this happen?
I think it's a trademark stamp or something. As much as it happens, there can't be a machine running with that many loose bolts or ones that have fallen out.

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Old 05-02-2013, 08:02 AM   #18
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Default Re: Hanging OSB on Ceiling in shop

Quote:
Originally Posted by mark52621 View Post
I attached osb directly to the joists, and I should have used stringers. The boards of the joists are on edge and very narrow. It's not bad until you start the second row, and each row after that gets worse.

If the walls or joists aren't square, or you don't get the osb put on perfectly then you have to trim each sheet so you have room o screw on the next. It was a major pain to do.

If you're careful when putting up stringers putting up the osb will be easy.
I assumed when I hung 7/16 OSB that the sheets were 48 x 96. I learned the hard way that they are 1/8 inch shorter in both directions (for installing "I" clips in roofing applications). When I had 8 sheets installed, I was off of the framing member, scratching my head. 1/8 spacing is needed to keep on center!! I used 1/2 crown construction staples, those sheets won't come off without ruining them, something else I learned the hard way!

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Old 05-02-2013, 08:09 AM   #19
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Default Re: Hanging OSB on Ceiling in shop

One way to "fix" a spacing problem is to sister a 2 by 4 even with the bottom of the trusses and then use the new 2 x4 as a point of attachment. No one will know it is there except for you! DAMHIK.
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Old 05-02-2013, 08:43 AM   #20
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Default Re: Hanging OSB on Ceiling in shop

Nowater - great tip. Also a tip someone gave me AFTER I was finished. Wish I had thought of it during the process

You get pretty good with a belt sander after sheeting the inside of a large building... LOL
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