Trus Joist LSL TimberStrand

When you choose Trus Joist, you're choosing the brand that:

-Invented the very first I-Joist over 50 years ago

-Lead innovation and design to create a suite of Engineered Wood Products, including I-Joist, LVL Microllam, LSL TimberStrand, and PSL Parallam

-Pushed the limits of span charts to make the open floor concepts of today a reality 

-Has been the #1 used I-Joist for the past 14 years 

-And is one of the most trusted brands in the building community today.

Trus Joist.  The Only Choice. 

Headers and Beams 

TimberStrand Benefits

With short-span applications like window and door headers, it’s shear strength that counts. TimberStrand® LSL has a shear stress of 400 psi—up to 50% stronger than other common EWPs—making TimberStrand® LSL the right solution for the right job. Thanks to its dimensional stability and durability, it resists warping, twisting, cupping, or checking and stands up to the challenges of dry climates.

Bearing strength can be an issue with headers, and here again TimberStrand® LSL is the clear winner because its high bearing strength can reduce the number of trimmers you’ll need at openings. Green-minded builders also appreciate the fact that TimberStrand® LSL is made from fast-growing wood species and Trus Joist's manufacturing process makes the best use, with virtually no waste, of each log.

When our header is stronger, greener, and a better value—why are you still using other headers?


Information Request

Engineering Questions?

Call us today for help with your engineering questions.  We have four full time engineers with over 60 years of combined experience that can help you appropriately size and spec to meet code, save money, and get the job done right.  We specialize in in floor plans, tall walls, and any other engineered wood application.



Using TrusJoist TimberStrand 

Cutting holes in TimberStrand:


PDF: TimberStrand Product Page

PDF: TimberStrand Warranty

PDF: TimberStrand Specifiers Guide


Fiber Source

Sustainability and Certifications