Municipalities nationwide are scrutinizing fire regulations, especially for combustible exterior wall assemblies. In 2022, New York City introduced the NYC Building Code (BC), section BC 718.2.6, for constructing exterior wall assemblies containing 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 concerns regarding the spread of fire where foam plastic and other combustible materials are used in exterior wall assemblies. Additional municipalities are likely to follow the New York Code, which requires non-combustible fireblocking to be incorporated into EIFS, MCM, HPL, FRP, and any other cladding with foam plastic insulation.
A Fireblocking Breakthrough Engineered by Sto
Driven by a commitment to innovation and safety, Sto Corp. developed a fireblocking solution to meet the latest rigorous fireblocking requirements for combustible exterior wall assemblies.
Sto Fireblocking is a unique, patent-pending solution that incorporates the use of Sto Lamellas, a non-combustible mineral wool product. Sto Lamellas are 48 inches long and 4 inches tall, precision cut and available in various thicknesses to accommodate R-value requirements. The product is adhered and, therefore, does not create any thermal bridging. It seamlessly integrates into StoTherm ci GPS/EPS, StoPowerwall ci, and StoVentec Rainscreen systems, offering a complete fireblocking solution for a wide range of applications.
Sto’s fireblocking solution is fully compliant with the new 2022 New York City Building Code (BC), section BC 718.2.6).
Fully Tested and Trusted Technology
To develop this innovative fireblocking solution, Sto leveraged over two decades of proven technology already utilized overseas. Lamellas have been fully tested and trusted across Europe for over two decades. Sto Lamella allows architects to design an energy-efficient building with lightweight cladding that is adhered to the substrate and, therefore, penetration-free. Plus, with Sto’s innovative solutions, virtually any aesthetic can be achieved, and as always with Sto, the systems include a complete air and water-resistive barrier.
Wall Systems that Meet the Most Stringent Fireblocking Requirements
These new building codes impact all exterior wall assemblies with wall coverings or claddings composed of other combustible materials, such as Metal Composite Materials (MCM), High-Pressure Laminates (HPL), Fiber-reinforced Plastic (FRP). When incorporated into StoTherm ci systems, StoPowerwall ci, or StoVentec Rainscreen systems, Sto Lamella provides a 2022 NYC BC code-compliant building envelope, tested in accordance with NFPA 285. Sto Fireblocking gives architects, contractors, and owners the confidence and ability to use wall systems that offer innovative design, are highly efficient, and meet the most rigorous building codes for fireblocking.
Engineered by Sto Corp. Approved by NYC.
The way in which the fireblocking layer in Sto Lamella is engineered using lamellas represents a significant advancement in fire safety technology. It is, quite literally, where safety meets innovation.
While it was engineered by Sto, the innovative world leader in claddings, air barriers, coatings, and restoration systems, this fireblocking breakthrough has been approved by New York City, the city with the most stringent building codes in the world.
For more information on Sto Lamella, please visit Stocorp.com or call (800) 221-2397.
