Trus Joist Doubles Production of TJI Joists With Flak Jacket

Weyerhaeuser has increased production of its new Trus Joist® TJI® joists with Flak JacketTM protection, which feature a specialty coating that enhances the joists’ fire resistance. By upgrading to more advanced, high-tech manufacturing techniques and adding an extra shift at its Boise, Idaho, facility, the company has significantly expanded its capacity to meet growing demand for the innovative product line as well as accommodate ongoing improvement in the single- and multi-family housing markets.

Introduced in 2012, Trus Joist TJI joists with Flak Jacket protection provide builders with a simple, cost-effective way to comply with the 2012 IRC fire protection requirements for single-family homes. In multi-family applications, TJI joists with Flak Jacket protection also make it easy to achieve one-hour floor/ceiling assemblies in multi-family applications.

“The industry response to TJI Joists with Flak Jacket has been tremendous, as builders see the installation and cost savings associated with this simpler method for meeting fire protection requirements,” said Tim Debelius, Trus Joist product manager for Weyerhaeuser. “We’re ramping up capacity to ensure we are able to meet customer requests and continue to capitalize on this successful product launch.”

For more information on TJI Joists with Flak Jacket, visit

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