Rosboro Laminated Decking™

Cost-Effective Decking Solution for Mass Timber

Rosboro Laminated DeckingTM is a cost-effective alternative compared to other mass timber floor and roof systems such as CLT (Cross Laminated Timber).

Features and Benefits of Laminated Decking

  • Easier to handle and install than bulky panel systems
  • Wide face of lumber is not exposed, greatly reducing
    the visibility of checking
  • Ideal for floor or roof designs that include a space
    between panels in the exposed ceiling for utility
  • Bearing support only required perpendicular to span
    allowing for the use of floor-to-ceiling curtain wall
    systems below panel edges
  • Can be pre-fabricated with all connections and
    openings just like CLT
  • 1-hour and 2-hour fire rated conformance
  • Wide range of size options make RLD the most cost
    effective wood roof and floor decking on the market

Available Sizes

  • Thickness: 3 1⁄2”, 5 1⁄2”, 6 3⁄4”, and 8 3⁄4”
  • Widths: 12” through 48”
  • Length: 10’ to 60’

With all laminations oriented on the strong axis RLD is stronger than CLT, allowing you to use smaller sections and reduce project costs.
3 1⁄2” RLD can replace 3-ply CLT while 5 1⁄2” RLD replaces 5-ply CLT in most floor and roof applications.

Laminated Decking Laminated Decking Close-Up 1

The exposed surface is available with either architectural or industrial appearance to fit a variety of project needs.

Designed for single and multi-span applications, Rosboro Laminated Decking provides a high-strength, visually appealing base for any Mass Timber structure.



Design Values



  1. Flat-use factor (Cfu) per 2015 NDS Secion 5.3.7.
  2. Applicable to dry-use service conditions (CM = 1.0).
  3. Applicable to in service temperature conditions ȱ 100°F (Ct = 1.0).
  4. Values assume minimum 12 inch decking width.

Design Properties



  1. Beam weight is assumed to be 35 pcf
  2. Tabulated Maximum Resistive Shear and Maximum Resistive Moment values are reported per one foot of decking width.


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Technical Specs

Weight Span Calculator

Enter the beam width and depth to lookup the approximate weight (per foot):Enter the type of beam, span, and weight to calculate.Crunch the numbers for your next project!

Contact Rosboro

P.O. Box 20
2509 Main Street
Springfield, OR 97477

Corporate Office: (541) 746-8411
Corporate Fax: (541) 726-8919
Toll-Free Sales Office: (888) 393-2304
Toll-Free Technical Service: (877) 457-4139
Sales Fax: (541) 726-0972