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
chases - 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.


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
Notes:
- Flat-use factor (Cfu) per 2015 NDS Secion 5.3.7.
- Applicable to dry-use service conditions (CM = 1.0).
- Applicable to in service temperature conditions ȱ 100°F (Ct = 1.0).
- Values assume minimum 12 inch decking width.
Design Properties
Notes:
- Beam weight is assumed to be 35 pcf
- Tabulated Maximum Resistive Shear and Maximum Resistive Moment values are reported per one foot of decking width.
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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