Doug Fir and the NW Timber Basket

In the Northwest "Timber Basket", the Douglas fir reigns supreme. An amazing tree, the Doug fir is not only North America's most plentiful softwood species, accounting for one fifth of the continent's total softwood reserves, it is also a champion timber producer, yielding more timber than any other tree on the continent. But the Doug fir's best trait is its natural dimensional stability, making it the ideal choice for structural and general-purpose wood for framing lumber.

The physical properties of the Doug fir allow it to be useful for a variety of applications. Boasting a high modulus of elasticity (the highest of the North American softwood species), Doug fir resists deflection, making it perfect for the design of flooring and other systems. It also has the highest ratings of any Western softwood for extreme fiber stress in bending; for tension parallel-to-grain; for horizontal sheer; for compression perpendicular-to-grain; and for compression parallel-to-grain.

Finally, Doug fir is a beautiful wood that is tightly knotted and close-grained. Combining this aesthetic appeal with its structural capabilities makes it, for many, the standard against which all other framing lumber is judged.

Rosboro Products

The Substance Behind the Reputation

In the competitive fields of engineered wood, dimensional lumber, and panel products, Rosboro has become known for quality, consistency, and service.

Our goal is to make it easy for our customers to do business with Rosboro, which requires the highest caliber of customer care and a family of products that continuously delivers the finest glulam, lumber, and plywood offerings to the marketplace. These respected products represent the substance behind the great reputation.

Rosboro X-Beam

Rosboro X-Beam™

Rosboro's groundbreaking X-Beam is the industry's first full framing-width glulam in Architectural Appearance. Rosboro X-Beam is the most cost effective engineered wood product on the market and is available in traditional and I-Joist compatible depths, as well as 9-1/4" and 11-1/4" depths that match standard 2 x 10 and 2 x 12 framing. Read more...

Rosboro Treated X-Beam

Rosboro Treated X-Beam™

Ideally suited for outdoor applications like decks, porches, trellises, and balconies, our 24F-V4 Treated Glulam in Architectural appearance helps prevent rot, decay and time-consuming callbacks. Read more...

Rosboro X-Beam Columns

X-Beam Framing Appearance Treated Glulam Columns

X-Beam glulam columns are Framing Appearance, surfaced four sides and all four edges are eased. These glulam columns remain straight and true and are inventoried in the following sizes: 3-1/2" x 3-1/2", 3-1/2" x 5-1/2", 5-1/4" x 5-1/2", 5-1/4" x 7", 7" x 7". Other cross sections are available on a custom order basis. Read more...

Rosboro Custom Glulam

Custom Glulam

For increased convenience and flexibility, Rosboro now offers Custom Glulam that can be manufactured per customers' drawings. Offerings   include curves, lengths to 100', fabrication, premium appearance, and species options like Alaska yellow cedar, Port Orford cedar, and Douglas fir. Read more...



A glulam product that's interchangeable with solid-sawn lumber of similar size and grade, Rosboro RMT is available in lengths up to 60 feet and comes in #1 and Select grades. DSA-approved in California. Read more...

Rosboro Studs


Rosboro "No Prior Select" studs can be shipped by car, truck, or van, in green and kiln-dried (Douglas fir and hemlock) Studs are produced to 8', 9', and 10' trim lengths. Available in 2' x 4', 2' x 6' as well as 3" and 4". Read more...