Agree with Tom - as long as the spray-in insulation is noncombustible, you should be good to go.
*The above is my opinion and has not been processed as a formal interpretation in accordance with the NFPA Regulations Governing Committee Projects. This is provided with the understanding that the AFSA assumes no liability for this opinion or actions taken on it and they are not to be considered the official position of the **AFSA, and/or NFPA or its technical committees.**AFSA cannot provide design or consulting engineering services, and this opinion should therefore not be considered, nor relied upon, as such.* Thanks, John John August Denhardt, PE *Vice President, Engineering and Technical Services* *American Fire Sprinkler Association* m: p: 301-343-1457 214-349-5965 ext 121 w: firesprinkler.org <https://www.facebook.com/firesprinkler.org/> <https://twitter.com/afsa/status/1039528345367732224> <https://www.linkedin.com/company/american-fire-sprinkler-association-afsa-/> <https://www.instagram.com/firesprinklerorg/> *Our members are at the heart of everything we do.* *Are you a member with a technical question? * Don't forget one of the most valuable resources that the American Fire Sprinkler Association provides is technical reviews from our Engineering & Technical Services Department. It’s like having an FPE on your staff. Visit www.firesprinkler.org/interp <https://www.firesprinkler.org/WWW/Contacts/Sign_In.aspx?WebsiteKey=3dff22a3-0306-479c-bccc-7aa1986c8ada&LoginRedirect=true&returnurl=/WWW/Technical_Services/Informal_Interpretations/WWW/Informal_Interpret/Member_View.aspx?hkey=8023e65f-a2ad-4465-9920-0f9313a07324> to submit a question today! On Thu, Nov 18, 2021 at 2:41 PM Tom Wellen via Sprinklerforum < [email protected]> wrote: > 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 > _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
