Hanging OSB on Ceiling in shop

[jmillspaugh]

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.

 

[58Yeoman]

I did mine right on the trusses and it's 24" on center. No sagging yet.

 

[deter]

either will work in a garage

 

[Clik]

I've got a couple of sags, but no big deal.

 

[Falcon67]

I'm at 24" OC with 7/16" OSB, no issues. Run it at right angles to the joists.

 

[dirttracker18]

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

 

[Highbeam]

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?

 

[ringneck]

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).

 

[JC23]

I'm at 24" OC with 7/16" OSB, no issues. Run it at right angles to the joists.

Same here.

 

[jmillspaugh]

Cool thanks all for the info. I attached them directly to trusses and it worked out great.

 

[NUTTSGT]

Cool thanks all for the info. I attached them directly to trusses and it worked out great.

How about some pics ?

 

[ddawg16]

Why OSB on the ceiling when drywall would be just as cheap....and not so flammable?

 

[mark52621]

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.

 

[Slednut]

I put OSB on the ceiling of my patio cover, how does this happen?

 

[Coursey]

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.

 

[Blk88GT]

I used 1/2" 4 ply plywood. The seams can be touched up with latex caulking.

 

[NUTTSGT]

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.

 

[dbonne]

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!

View media item 30245

 

[Nowater]

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.

 

[Blk88GT]

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

 

[Spudland_Dave]

Strapping the underside of the trusses 16" OC seems to be a regional thing. Where I'm from its the only way to fly...NOT doing so is seen as "Hack Job"...last week at this time thats precisely what I was doing:

 

[pattenp]

It's a bad glue spot where the moisture in the paint caused the lamination of the wood chips to fail. OSB is not water proof.

I put OSB on the ceiling of my patio cover, how does this happen?

 

[Slednut]

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.

They're all over the place, screws, bolts and nuts, a lot of them you can't see during the day but at night when the lights are on they are easy to see. The bolt in the picture looks like an old one.

 

[Slednut]

I don't want to steal the tread but here is a pic with what I'm talking about circled.

 

[nonhog]

They're all over the place, screws, bolts and nuts,

Cool! highlight them!

 

[pattenp]

I see now what you're talking about. At first what I saw looked like a bubble. But now it looks like a prehistoric fish fossil. So just how old is that OSB?

I don't want to steal the tread but here is a pic with what I'm talking about circled.