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bigbavarian 07-07-2008 12:27 PM

Drywall thickness for ceiling?
Hello everyone,

I am finishing the basement of my 50s ranch and was wondering what the thickness of the drywall should be for the ceiling. There is a little flex to the ceiling so I a conceerned abotu cracking at the seams. Do I use thicker sheets to be stiffer or thinner sheets for reduced weight?

Any other tips would also be appreciated.

Thank You,


AtlanticWBConst. 07-07-2008 04:07 PM

This depends on the distance between your ceiling framing members. 24" O.C.? 12" O.C.?
Generally, it is best to have your ceiling framing members at 16" OC for any thickness sheetrock (exception: 12" OC for MR board). If you don't have it, add the additional framing.

Once this is done, if you are concerned about flex/sag/etc...Then you could install 5/8" on the ceilings (with 16" OC framing) and 1/2" on the walls.

Good Luck...and check that framing!

Sir MixAlot 07-07-2008 08:26 PM

I'd use either 5/8" or 1/2" ceilng board(made specifically for ceilings).:thumbsup:

jerryh3 07-07-2008 08:59 PM


Originally Posted by Sir MixAlot (Post 136964)
I'd use either 5/8" or 1/2" ceilng board(made specifically for ceilings).:thumbsup:

Ceiling drywall? Any links?

angus242 07-07-2008 09:36 PM


Originally Posted by jerryh3 (Post 136974)
Ceiling drywall? Any links?

bigbavarian 07-08-2008 07:09 AM

Great tip guys. I never knew there was drywall made especially for ceilings.


Sir MixAlot 07-08-2008 07:54 PM

Glad we could help you out. Have fun!:wink:

mjdonovan 07-20-2008 09:07 AM

First, if you are going to install drywall on the basement ceiling, I would add strapping (1"x3") on 16 O.C. perpendicular to the bottom of the first floor floor joists. This will strengthen the area for hanging drwall.

I would also use 5/8" sheetrock on the ceiling.

buletbob 07-20-2008 03:25 PM

GP Tough-Rock

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