Exact Fit. On Time. Every Time.

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TrimJoist® is the marriage of an open-web floor truss and a trimmable, wooden I-joist, bringing the best features of each to the relationship. As the name TrimJoist® indicates, our product can be trimmed on the construction site for a custom fit

No more custom-made floor trusses!

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The TrimJoist® floor system is manufactured entirely in the United States. This allows for us to employ those in our local community, achieve a higher standard of quality control and guarantee timely delivery.

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TrimJoist® floor truss products are used by discerning builders, contractors, and remodelers and specified by leading architects, engineers, and designers.

The TrimJoist® can be quickly incorporated into any house plan and is the first step to a floor system with superior quality and superior support.

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The TrimJoist® system's open web design allows subcontractors to easily, practically and quickly run electrical work, duct work and plumbing throughout the flooring system of any building. Running mechanical systems through the trusses instead of below them gives architects more design flexibility.

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The engineered strength of the TrimJoist® system provides for longer spans and wider on-center spacing that results in lower costs from both the material and the labor perspective.

Joists come in two-foot incremental lengths, beginning at 4 feet and spanning as far as 30 feet and can be trimmed by up to 24 inches.

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Because each TrimJoist® is trimmable on-site, contractors can always achieve a custom fit without the risk and lead time from standard custom floor trusses.

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Trimjoist’s in-house engineering staff is always on hand to assist contractors, architects and building designers in plan conversion and design layout. They provide detailed floor-framing plans and precise material lists for each project, which ensures the trusses are shipped and installed right the first time.

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Each joist has a 3.5-inch-wide nailing flange on the top and bottom, virtually ensuring a non-squeak floor when properly installed. The extra-wide nailing surface provided by the TrimJoist® makes for a superior installation and more satisfied owners.

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We receive calls each day from all over the country regarding TrimJoist® products. The questions here are a small sampling of those most frequently asked. 

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Fast Delivery

Because the design of the TrimJoist® system is modular, the joists do not have to be custom built for each job, allowing Trimjoist distributors to maintain inventories of modular sizes for quicker job-site delivery

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