Shawn, I would hope the insulation used in the concealed space to entirely fill it has the fire retardant additive.
So, below the gypsum, as long as no other combustibles are exposed (wood framing for wall), only gypsum (that is a limited-combustible material), sprinklers can be omitted. On Thu, Nov 18, 2021 at 1:22 PM Shawn Foor via Sprinklerforum < [email protected]> wrote: > Open web wood truss construction that is filled completely with spray foam > insulation with gyp board placed on bottom of truss and a drop ceiling > located 12" below gyp board would that space require sprinkler protection. > > -- > Shawn Foor, SET > > *FOOR DESIGN, LLC* > *10208 E 98TH ST* > *TULSA, OK 74133* > *P:918-237-1400* > _______________________________________________ > Sprinklerforum mailing list > [email protected] > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > -- Tom Wellen - May '91 Senior Fire Protection Consultant Fire Engineering & Consulting, LLC (972) 355-2159 fireeac.com <http://fireeac.com/> _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
