Sto Fireblocking has recently launched a patent-pending solution designed to meet the latest rigorous fireblocking requirements in the 2022 NYC Building Code (BC) for combustible exterior wall assemblies.
Sto Fireblocking is designed for use in a variety of Sto’s wall envelope solutions: StoTherm® ci GPS/EPS, StoPowerwall® ci and StoVentec® Rainscreen® systems.
This unique solution incorporates the use of a new product, Sto Lamella. Sto Lamellas are a non-combustible mineral wool product spanning 48″ long and 4″ tall, coming in various thicknesses to accommodate R value requirements. Sto Lamellas seamlessly integrate into a variety of Sto wall systems, offering a complete fireblocking solution for a wide range of applications.
Sto Fireblocking is fully compliant with the new 2022 New York City Building Code (BC), section BC 718.2.6 for new and retrofit construction of exterior wall assemblies that contain combustible components. New York City authorities enacted these changes because of the density of high-rise structures in the city and their belief that current NFPA 285 testing did not address all the fire performance concerns where foam plastic and other combustible materials are used in exterior wall assemblies. This comprehensive code sparked a nationwide trend where new codes were introduced requiring non-combustible fireblocking to be incorporated into EIFS, MCM, HPL, FRP and any other cladding with foam plastic insulation.
