Section Contents

OSB Panel Requirements for Construction

Examples of APA trademarked OSB panels and popular OSB grades.

APA-trademarked OSB is suitable for a variety of end uses including subflooring, single-layer flooring, wall and roof sheathing.  Relative to their strength, the panels are light in weight and easy to handle and install.

OSB shares many of the strength and performance characteristics of plywood.  The combination of wood and adhesives creates a strong, dimensionally stable panel that resists deflection, delamination, and warping. They are able to resist racking and shape distortion when subjected to strong wind and seismic conditions.

Six requirements for construction applications
1. General
  • Dimensional tolerance and squareness (includes performance category and thickness)
2. Performance
  • Structural performance
  • Uniform loads
  • Concentrated load (static & impact)
  • Nail holding
  • Racking shear
3. Physical properties
  • Dimensional stability
4. Adhesive performance
  • Resistance of the glue line to mould, elevated temperatures and bacteria
5. Bond performance
  •  Meets Exposure 1 classification
6. Moisture Content
  •  The panel must have a moisture content less than 16% at the time of shipment and when tested.