Engineered Wood Products

Also known as manufactured board, composite wood, and man-made wood, engineered wood has a variety of applications, including commercial, residential, and industrial. Crafted to precise design specifications, products made of engineered wood must meet national and international standards.

As the voice of the engineered wood products industry, The Engineered Wood Association began in 1933 when the industry only produced one product -- sanded plywood. In 1994, the organization took new shape with a new name (ASP) and new materials. At that time, it started to include I-Joists, structured composite lumber, oriented strand board (OSB), glued laminated beams, and structural composite lumber.

Here is a description of several products made from engineered wood that are covered under the APA's quality and technical standards. However, this should by no means be considered a comprehensive list of applications.


Often regarded as the original engineered wood product, plywood is made from cross-laminated veneer. Using sturdy, moisture-resistant adhesives, the material is bonded and pressed under heat. As one of the most versatile building products, plywood has earned a reputation for its stiffness and strength.
Commonly used for siding, flooring, roofing, industrial containers, furniture, and boats.


Designed for use in floor and roof construction, i-joists are shaped in the letter "I" and are prefabricated from sawn or structural composite lumber flanges and OSB webs.

Rim Board

Engineered to work in tandem with i-joists, rim board can be shaped from plywood, glulam, SCL, or OSB. Rim board that meets APA performance standards narrows the space between the sill plate and the bottom wall plate, or between the top and bottom plate in multi-floor construction.
Commonly used for floor systems

Oriented Strand Board

Oriented strand board is a wood structural panel constructed from rectangular-shaped strands of wood that are stacked upright and positioned in right angles to one another, placed into mats, and joined with heat-cured, moisture-resistant material. Commonly used for roof, floor, wall sheathing, furniture and industrial containers. Much like solid wood, engineered wood can be used for a variety of purposes. Due to its comparative advantages, it may be used in preference to solid wood in many instances.


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