MCL Engineered Floor Joists

solid framing from top to bottom

Mid-Columbia Lumber’s Patented MCL Engineered Floor Joists, provide high-performance floor construction (U.S. Patent No. 10,041,251). The dimensional stability of our joists make them inherently rigid and resistant to warping and twisting. Our engineered joists are lightweight and available in 2x10 and 2x12 widths and lengths up to 60 feet. Utilizing longer length joists, makes them quicker and easier to install as opposed to traditional framing requiring multiple piece spans. MCL Joists have quicker lead times, cheaper freight and unparalleled ease on the construction site, which saves time and money while building a stronger, truer structure. Our floor joist products carry the exact same design values as solid sawn lumber and outlined by the WWPA Span Tables.


Longer, Stronger and Straighter. The design values for our structural finger-jointed products exceed national code standards making them a custom alternative to costly solid-sawn dimensional lumber.


doug fir


Hem Fir


SPF Spruce-Pine-Fir (South)



Long length Finger-Jointed Lumber