Plywood ceiling question

[Steve102C3]

My new shop, Arkansas 30 x 40 stick built shop, has trusses placed 24" on center.

I will use plywood for the ceiling.

My question is, can 3/8 plywood be attached to the trusses or do I need to strip the trusses with 1 x 4s 16" on center?

Thanks,

Steve

 

[Shady Oaks Garage]

We did our fire station directly to trusses and striped the seams later as the 4 x 8 sheets started sagging

 

[Steve102C3]

I felt like I needed to strip across the trusses first. I know with sheetrock that's how it's done.

Thanks,

 

[fourjeepin]

PO of my place put thin plywood 'beadboard' on the ceiling of my shop. It was first stripped with 1x4s. I am glad they did as it gave me additional places to hang lights and such.

 

[James-W]

Instead of buying a bunch of material to use as strips, what would it cost to use thicker plywood? Like maybe 5/8 instead of 3/8, or even 3/4? Sometimes you can get thicker plywood on sale for not all that much more money.

 

[Justanoldguy]

Instead of buying a bunch of material to use as strips, what would it cost to use thicker plywood? Like maybe 5/8 instead of 3/8, or even 3/4? Sometimes you can get thicker plywood on sale for not all that much more money.

yep I agree

 

[Cyberbear]

Just be sure to screw the ply to whatever, to prevent pulling out over time. The 1 x 3 or 4 inch furring strips is the way to go, and it's easier to hit with fasteners than anything narrower, that might also sag.

 

[zendriver]

I used 7/16 OSB and there's no sags at all.

3/8 should be fine

Use heavy screws and you wont have to put a floor in the attic LOL


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[MushCreek]

When I strapped my garage, I found 2X4's to be cheaper than 1X4's, if you can spare an extra 3/4". I strapped mine because I had lots of insulation on top (added weight).

 

[Justanoldguy]

I used 7/16 OSB and there's no sags at all.

3/8 should be fine

Use heavy screws and you wont have to put a floor in the attic LOL


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Was yours spaced 24" on center?
Be surprised at no sag at that spacing.
Unreal actually.

 

[Dragfluid]

Why are you using plywood in the first place?
That's going to reflect a lot of noise compared to drywall, I believe.

 

[Blk88GT]

My trusses are 24" centers and I used 1/2" CDX plywood. No sagging issues. I used 2.5" ring nails in the framing nailer.

 

[Todd.Brock]

I was wondering about the plywood on the ceiling as well. My home garage is 24" OC and its 5/8 drywall. No appreciable sag I can notice. I'm all for build it how you like- but you may need to step up to thicker/ heavier material.

 

[Falcon67]

In my experience, 3/8 ply warps like crazy vs 7/16 OSB. Especially if exposed to any moisture. I would not use 3/8 play on 24" OC. I used 7/16 OSB on my 24" OC ceiling, no changes/dips/etc since it was installed in 2011. Also, depending on the time of year and pricing, ply can cost 2-3 times as much as OSB.

 

[Dragfluid]

And of course steel panels would be the best way. (IMHO)
Already painted and looks good.

 

[James-W]

I have 5/8 drywall on my garage ceiling, painted white to help reflect the light down. It doesn't sag, is relatively inexpensive, and it is easy to install and/or repair if necessary.