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Old 12-20-2009, 10:34 AM   #1
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drywalling 24oc wall


I'm about to hang drywall on the walls in the basement after rocking the ceilings. The perimeter walls are poured concrete and pre-studded 24in oc. Ceiling height is less than 8 ft and lower where I have soffits for ductwork. I already bought 4x8 drywall panels 1/2 inch thickness. I'm leaning towards hanging vertically if I finish with tape, mud and sand myself because hiding tapered seams is easier for the drywalling novice. But I also want to get an estimate if I hire out the taping and mudding and professionals usually hang and finish horizontally. So anticipating that I may give in and pay someone to mud and sand, should I hang horizontally? Will the 24oc stud spacing cause more flex with the tapered edges if installed horizontally leading to cracks or is that not an issue? I guess lifting the sheets horizontally will be a challenge but I need someone to recommend the horizontal. If I had bought 4x12 panels, horizontal would be a no-brainer but i already have the 4x8 sheets. Thanks in advance for your help!!!

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Old 12-20-2009, 10:41 AM   #2
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drywalling 24oc wall


with 24" OC studs you must use 5/8" drywall.

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Old 12-20-2009, 10:47 AM   #3
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drywalling 24oc wall


I read that minimum is 1/2 inch for 24oc, 5/8 is better...less flex but that's what HD sold me and I didn't specify....limited knowledge of drywalling basics.
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Old 12-20-2009, 10:47 AM   #4
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drywalling 24oc wall


Either way with only 1/2" may lead to cracks
1/2" will flex quite a bit 24" OC
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Old 12-20-2009, 10:49 AM   #5
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drywalling 24oc wall


HD is about your worst source for information or materials.
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Old 12-20-2009, 10:51 AM   #6
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drywalling 24oc wall


Will installing horizonatally create issues with this added flex? Should I add blocking between the studs for added support?
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Old 12-20-2009, 10:57 AM   #7
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drywalling 24oc wall


Quote:
Originally Posted by 8roty View Post
Will installing horizonatally create issues with this added flex? Should I add blocking between the studs for added support?
Yes to both questions.
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Old 12-20-2009, 10:59 AM   #8
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drywalling 24oc wall


So the recommendation is to install vertically with blocking?
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Old 12-20-2009, 11:34 AM   #9
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drywalling 24oc wall


Edit:

Either way I would use blocking. 1/2" with 24" oc needs some support
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Old 12-20-2009, 01:20 PM   #10
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drywalling 24oc wall


Suggest to take the 1/2" back to HD and swap for 5/8". It's a lot of work for it to come out less than satisfactory by using the wrong materials, IMO.
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Old 12-20-2009, 02:39 PM   #11
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drywalling 24oc wall


You may use 1/2" on the walls, run either way:
Gypsum Panel Gypsum Panel Maximum
Product Thickness Product Orientation Framing Spacing
in. (mm) to Framing in. (mm) o.c.
Ceilings:
3/8 (9.5) A Perpendicular B 16 (406)
1/2 (12.7) Parallel B 16 (406)
1/2 (12.7) Perpendicular B 24 (610)
5/8 (15.9) Parallel 16 (406)
5/8 (15.9) Perpendicular 24 (610)
Walls:
3/8 (9.5) Perpendicular 16 (406)
or Parallel
1/2 (12.7) Perpendicular 24 (610)
or Parallel
5/8 (15.9) Perpendicular 24 (610)
or Parallel
A Shall not support thermal insulation.
B On ceilings to receive hand or spray-applied water-based texture
material either i) 1/2 in. (12.7 mm) gypsum ceiling board (ASTM
C 1396/C 1396M shall be applied perpendicular to framing; or ii)
other gypsum panel products shall be applied perpendicular to
framing and board thickness shall be increased from 3/8 in. (9.5
mm) to 1/2 in. (12.7 mm) for 16 in. (406 mm) o.c. framing and
from 1/2 in. (12.7 mm) to 5/8 in. (15.9 mm) for 24 in. (610 mm) o.c.
framing. See Appendix A.2. From: http://www.gypsum.org/pdf/GA-216-07.pdf

"Will the 24oc stud spacing cause more flex with the tapered edges if installed horizontally leading to cracks or is that not an issue? -------- Run with long side parallel to the studs, strength is = 46# per sq.ft. Run perpendicular to the studs, strength is 147# per sq.ft. Or more than 3 times as strong. May not be an issue if you don't have any children......

Some tips on hanging and finishing: http://www.taunton.com/finehomebuild...tt-joints.aspx

http://bestdrywall.com/files/ReduceCallbacks.pdf Prime before and after texturing: http://gypsum.org/download.html
Use floating ceilings and corners.
Be safe, Gary
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Clothes taking longer to dry?
Clean the dryer screen in HOT water if using fabric softener sheets.
They leave a residue that impedes air-flow, costing you money.
Clean the ducting in the last six months? 17,000 dryer fires annually!
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Old 12-20-2009, 02:58 PM   #12
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drywalling 24oc wall


Quote:
Originally Posted by Bob Mariani View Post
with 24" OC studs you must use 5/8" drywall.
Must?
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Old 12-20-2009, 03:22 PM   #13
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drywalling 24oc wall


or not.. I guess many except low quality work. But why? Is 5/8" that much more money for a wall that will look better?
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Old 12-20-2009, 03:34 PM   #14
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drywalling 24oc wall


Quote:
Originally Posted by Bob Mariani View Post
or not.. I guess many except low quality work. But why? Is 5/8" that much more money for a wall that will look better?
True. I would be afraid of someone bumping into a 24 o.c. wall with 1/2" drywall.
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Old 12-20-2009, 04:22 PM   #15
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drywalling 24oc wall


Preference for running the sheets horizontally because this helps to keep joints on studs from showing up as easily. For all the work and effort I would recommend you take the sheetrock back and hire everything out. Those sheetrockers are brutes and for the work they do, the good ones, they are cheap.

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