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TimberStrand® laminated strand lumber (LSL) is an engineered lumber that is consistently straight and true — characteristics that combine to create superior rim board material. TimberStrand Rim Board is dimensionally stable and excels at transferring vertical and lateral loads to the foundation. Sized to fit with TJI® joists, TimberStrand Rim Board is designed to provide critical performance where you need it most.
TimberStrand® LSL with Flak Jacket FRT Protection
A Unique Solution for a Demanding Specification
International Building Code (IBC) requires wood-framed exterior walls of Type III construction to be fire-retardant treated wood. Like many building departments, if you consider rim board as part of the wall framing, you need a rim providing both structural performance and fire retardant protection all in one. TimberStrand LSL with Flak Jacket FRT protection is the perfect solution. Flak Jacket FRT protection:
Allows all the benefits of TimberStrand LSL Rim design properties, including fastener values, with no reductions required
Alleviates dimensional stability and compatibility challenges
Is non-corrosive to fasteners, hangers, and connectors
TimberStrand Rim with Flak Jacket FRT Protection is not sold in all areas. Ask your TM about availability near you.