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Fire Safety Guidelines for Use of Rigid Polyurethane and Polyisocyanurate Foam Insulation in Building Construction 

Rigid polyurethane and polyisocyanurate foams are effective insulation materials that can be used by architects, builders, and contractors to meet today’s stringent energy code requirements. Depending on product-specific composition factors, the fire performance characteristics of polyurethane and polyisocyanurate foams may vary, as is the case with many other organic materials.

To promote jobsite safety, all organic foam insulation, regardless of whether they contain flame retardants, should be considered combustible and handled accordingly. The precautions detailed in this guidance document can help minimize potential ignition and fire during handling, storage, and use. Ultimately, the building code fire safety requirements that apply to the use of polyurethane and polyisocyanurate foams in a building will be determined by the specific application (e.g., roofing insulation, interior wall cavity insulation).

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American Chemistry Council

The American Chemistry Council’s mission is to advocate for the people, policy, and products of chemistry that make the United States the global leader in innovation and manufacturing. To achieve this, we: Champion science-based policy solutions across all levels of government; Drive continuous performance improvement to protect employees and communities through Responsible Care®; Foster the development of sustainability practices throughout ACC member companies; and Communicate authentically with communities about challenges and solutions for a safer, healthier and more sustainable way of life. Our vision is a world made better by chemistry, where people live happier, healthier, and more prosperous lives, safely and sustainably—for generations to come.