Gypsum Board - horizontal or vertical...

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Author Message Robin E. Snyder Senior Member Username: robin Post Number: 507 Registered: 08-2004 Posted on Friday, February 21, 2014 - 11:11 am:    Pros and cons or reasons to install gypsum board (over steel studs) either horizontally or vertically? Nathan Woods, CSI, CCCA, LEED AP Senior Member Username: nwoods Post Number: 561 Registered: 08-2005 Posted on Friday, February 21, 2014 - 11:29 am:    Lengths are customizable, widths are not. You can order the sheetrock in convienant sizes, such as 4x9'6" in partial height walls with 9' ceilings, and reduce the amount of cutting, taping, and general installation costs Ronald L. Geren, FCSI, AIA, CCS, CCCA, SCIP Senior Member Username: specman Post Number: 1191 Registered: 03-2003 Posted on Friday, February 21, 2014 - 12:36 pm:    If the wall is rated, the orientation must be in the direction indicated in the assembly. Many of the assemblies require a vertical installation. Ron Geren, FCSI, AIA, CCS, CCCA, SCIP www.specsandcodes.com J. Peter Jordan Senior Member Username: jpjordan Post Number: 680 Registered: 05-2004 Posted on Friday, February 21, 2014 - 12:53 pm:    If you are installing horizontally, you should install some framing members to support the horizontal gypsum board edge. This is sometimes omitted by the Contractor; if you don't have it detailed or specified that way, you may get into it with people at the jobsite. Lynn Javoroski FCSI CCS LEEDŽ AP SCIP Affiliate Senior Member Username: lynn_javoroski Post Number: 1760 Registered: 07-2002 Posted on Friday, February 21, 2014 - 01:18 pm:    There are times when the height (or size in general) of the wall can determine the more intelligent orientation (a 12 foot high wall, for example). As long as there are no other restrictions, such as Ron noted, I tend to leave it up to the contractor as means and methods. spiper (Unregistered Guest) Unregistered guest Posted on Friday, February 21, 2014 - 05:51 pm:    Assuming fire rating is not a consideration, what would acoustical considerations say for one orientation or another? my gut reaction is that unsupported horizontal applications could transmit more sound than a vertical installation but I could be wrong. Lynn Javoroski FCSI CCS LEEDŽ AP SCIP Affiliate Senior Member Username: lynn_javoroski Post Number: 1766 Registered: 07-2002 Posted on Wednesday, February 26, 2014 - 04:24 pm:    MasterSpec (and I assume other specifications) direct installation of edge and end joints over supports (unless there's other supports as in ceiling applications). So it appears that the edges / ends are supported no matter the orientation. At stairwells, unless ratings prohibit, the instructions are to install horizontally.