Weyerhaeuser’s TJI joists with durable Flak Jacket protection to enhance fire resistance provide a simple, cost-effective way to achieve one-hour floor/ceiling assemblies in multifamily applications and to comply with the 2012 IRC fire protection requirements for single-family homes. In multifamily buildings, the joists provide a one-hour fire-rated assembly with a single layer of gypsum and no expensive mineral wool. They are available in multiple series and depths and installation does not require special tools, hangers, or training.
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