OSB

Oriented strand board (OSB) is a performance-rated structural panel engineered for uniformity, strength, versatility and workability. It is utilized internationally in a wide array of applications including commercial and residential construction and renovation, packaging/crating, furniture and shelving, and do-it-yourself projects.

Because it is engineered, OSB can be custom manufactured to meet specific requirements in thickness, density, panel size, surface texture, strength, and rigidity. This engineering process makes OSB the most widely accepted and preferred structural panel among architects, specifiers and contractors.
This engineering process makes OSB the most widely accepted and preferred structural panel among architects, specifiers and contractors.

OSB is equivalent to other structural panels in its strength and rigidity, panel size and thickness, fastener performance and paintability. As a performance-rated structural panel, it meets specific end use requirements in all major building codes.

In addition, span ratings are stamped on each panel. (These ratings denote maximum recommended spacing of supports for load-bearing conditions.)

OSB also is Exposure 1 rated for durability, which means that it is designed to perform in applications where construction delays may occur. It requires no special treatment, only the same degree-of-care as other wood products. As with other structural wood panels, prolonged direct contact with rain or standing water should be avoided.

Common thicknesses are:

• 1/4″ (6 mm)
• 3/8″ (9.5 mm)
• 7/16″ (11 mm)
• 15/32″ (12 mm)
• 1/2″ (12.5 mm)
• 19/32″ (15 mm)
• 5/8″ (15.5 mm)
• 23/32″ (18 mm)
• 3/4″ (18.5 mm)

Other thicknesses are available on special order. Panels 19/32″ (15mm) and thicker are manufactured either square-edged or tongue and groove on the long edge.