Drywalling the ceiling. Advice?

[sk8louisville]

Roboto's thread got me wondering and I Googled around but couldn't really find an answer so here goes:

My new shop trusses are 24" on center. Roboto went with furring strips down to 16" and 1/2 sheets so they don't sag.

Could I go with 5/8 sheets and no strips without sagging? I'll probably do it myself so if I could eliminate a step, that'd save me some time. (and a sore neck)

Thanks!

 

[gungatim]

my attached 3 stall garage on my house has trusses 24 OC, they used full sheets of 5/8 drywall (fire code here) with no sag. pretty sure my upstairs trusses are 24 OC in the house with 1/2 drywall and no sag including wet blown cellulose insulation. I don't think a polebarn would be any different. JMO

 

[Heavylift60]

Post pics when complete.

 

[BarryWells]

Go rent yourself a drywall jack

 

[matt_i]

Absolutely 5/8" will work on 24" centers.

Look into sourcing Type C drywall for its supreme fire resistance. Very small cost premium over Type X. I was a fan of 12' sheets which covered a lot of area fast with the tradeoff of being heavy.

I would try to buy good-used a drywall lift or borrow someone else's. If you do it yourself it will take a few weekends, and that's where renting can eat your wallet. Also if you have outlets or other ceiling penetrations it will make life so much easier when fitting the sheets.

I used Loctite PL 100 construction adhesive as well.

I'm in the taping phase, as a noob I'm impressed with Strait-Flex tape products.

 

[sk8louisville]

Thanks. I'll post some pics, etc. and I'd like to see pics as well.

 

[bdbecker]

...I would try to buy good-used a drywall lift or borrow someone else's. If you do it yourself it will take a few weekends, and that's where renting can eat your wallet...

+1

I ended up getting a new one from Northern Tool. Between the sale price and the coupon, I think I got for ~$125 (that includes tax). Even if I give it away when I'm done, it was still cheaper than renting one for a week. Used ones sell pretty quickly around here for $100 when they pop up, hoping I can do the same when I'm all done.

 

[jsaw]

My garage I installed 4x12x5/8 on 24" centered studs with no problem

 

[acer66]

No sagging with 1/2” on 24 oc here and a big yes on a drywall lift.

 

[Bretny]

U think humidity will have alot to do with if your drywall sags.

If your going to get a lift and i suggest you do see if you can get full sheets to span the garage. I know they make upto 16'. Trying to hide a cut/non beveled edge in a ceiling can be a real pain. Even if you could run a strip of shop lights down that seam it would make hiding it easier.

We did 16ft 1/2 11' up in my living room with a drywall lift. 3 guys and it was still a bear to do.

 

[acer66]

If your going to get a lift and i suggest you do see if you can get full sheets to span the garage. I know they make upto 16'. Trying to hide a cut/non beveled edge in a ceiling can be a real pain.

I would use **** boards, makes mudding so much easier.

https://www.finehomebuilding.com/1996/01/01/invisible-drywall-****-joints

 

[Bretny]

Thats prety damn trick!. Thank you!

 

[sk8louisville]

More googling today when I shoulda been working lead me to this product. Some OG drywallers said they worked great with 1/2 boards on 24" OC trusses. Walls too.

https://www.homedepot.com/p/1-2-in-Corner-Back-Drywall-Back-up-Clips-50-Pack-4015/203558624


I'm still on the fence. I'm in Kentucky and it's gets humid as hell here.

 

[The Cobbler]

1/2" on 24" centers is done al l the time. it wont sag unless it gets wet.

 

[paredown]

Also, if you are taping, it's worth it to stagger the **** joints, if you weren't aware of that already. Makes it harder to see the seams when finished.

And if you are ****, a full mud coat on and scraped off the whole ceiling makes any telegraphing of seams pretty much disappear, especially if you use a paint with any gloss.

And yes to the cheap hoist--I have been doing 8' 5/8" 8' throughout the house as I go room to room, and it would be impossible to do it by myself any other way.

If you look at MDS for 5/8" it will say 24" O/C is acceptable. In fact it is acceptable for 1/2" as well:
https://www.americangypsum.com/site...ts/GA-253 Application of Gypsum Sheathing.pdf