Mike Lamb 59 Posted December 19, 2016 Report Share Posted December 19, 2016 Is it okay to sheath the exterior walls of a garage using only drywall? Click to Enlarge 30.02 KB Quote Link to post Share on other sites
palmettoinspect 1 Posted December 19, 2016 Report Share Posted December 19, 2016 Gypsum makes an "exterior" grade drywall sheathing. It's seen on many many older 1960-80s homes in my neck of the woods. http://www.americangypsum.com/products/ ... -sheathing ETA: Typically somewhere on the paper it should read "exterior sheathing" or something similar. Quote Link to post Share on other sites
kurt 2 Posted December 19, 2016 Report Share Posted December 19, 2016 Is it Denshield? Maybe Densglass Firegard? Quote Link to post Share on other sites
Tom Raymond 27 Posted December 19, 2016 Report Share Posted December 19, 2016 Very common here on 60s stuff. Never seen it on anything newer. Quote Link to post Share on other sites
kurt 2 Posted December 19, 2016 Report Share Posted December 19, 2016 We got a lot of restrictive weird fire code stuff in Chicago. Could be fire code related. We've done some jobs where we have to put on 3 layers of 5/8's on exterior walls to meet code. Quote Link to post Share on other sites
Marc 83 Posted December 19, 2016 Report Share Posted December 19, 2016 That doesn't fly here in residential, just commercial. Maybe it's just the local muni authority that prohibits it. Marc Quote Link to post Share on other sites
mlparham 0 Posted December 19, 2016 Report Share Posted December 19, 2016 Is it okay to sheath the exterior walls of a garage using only drywall? Click to Enlarge 30.02 KB What is the exterior siding and age of the home? Quote Link to post Share on other sites
Mike Lamb 59 Posted December 20, 2016 Author Report Share Posted December 20, 2016 It's standard drywall with vinyl siding. There was a Tyvek MB. About 2007. I would think OSB or plywood would be needed somewhere at least for lateral bracing. There were no signs of structural problems. Quote Link to post Share on other sites
BADAIR 14 Posted December 20, 2016 Report Share Posted December 20, 2016 gypsum board & diagonal metal strap with other components are code approved materials for lateral bracing when properly installed & where allowed...consult ahj for further & see the consolidated 8 methods allowed at this link http://www.jlconline.com/how-to/framing ... -the-irc_o Quote Link to post Share on other sites
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