AcuJoist
Engineered Joist Solutions
Engineered I-Joists for residential and commercial wood construction projects.
Joist Series
Explore ACJ Series joists designed for different strength and span requirements.
ACJ 40 Series
Depths: 9½″, 11⅞″, 14″, 16″
Use: General residential construction with environmentally responsible materials.
- Flanges: 2½″ x 1½″ proprietary-grade solid-sawn SPF lumber
- Web: 25/64″ engineered OSB
- Responsibly-sourced and forest certified
- No added urea-formaldehyde resins
- Built for performance and value
ACJ 60 Series
Depths: 9½″, 11⅞″, 14″, 16″
Use: Higher-load applications in residential or light commercial projects.
- Flanges: 2½″ x 1½″ MSR Rated 2100Fb solid-sawn SPF lumber
- Web: 25/64″ engineered OSB
- Stronger flange rating supports longer spans
- Ideal for stiffer floors and larger open rooms
ACJ 80 Series
Depths: 11⅞″, 14″, 16″, 18″
Use: Custom homes, multi-family developments, and light commercial construction.
- Flanges: 3½″ x 1½″ MSR Rated 2100Fb solid-sawn SPF lumber
- Web: 25/64″ engineered OSB
- Wider flange enhances structural capacity
- Supports long spans, complex layouts, and heavy finishes
Joist Design Software Support
AcuJoist I-Joists are compatible with leading design platforms trusted by engineers and builders across North America.
Whole-house EWP estimating, layout, and 3D modeling.
Learn More →Real-time joist layout, member sizing, and design validation.
Learn More →Backed by a Limited Lifetime Warranty
AcuJoist I-Joists are manufactured to meet the highest standards for strength, straightness, and dimensional stability.
Each joist is produced under APA-certified programs (PRI-400 & PRI-405) and is built to perform consistently throughout the life of the structure in which it’s used. Our formaldehyde-free adhesive and precision manufacturing help ensure product integrity from plant to project.
All AcuJoist products are supported by a Limited Lifetime Warranty for added confidence throughout your distribution network. Please see warranty documentation for further info
View Warranty Documentation