Orders received July 12th - July 14th will be shipped on July 15th.

Specific Gravity (SG) Settings for OSB and Plywood

When measuring plywood, OSB and MDF, avoid taking readings over obvious defects, voids or very rough areas, over nails or screws as well as or where sheets are joined. This will result in inaccurate readings. For accurate readings, the material thickness needs to be a minimum of ½” (12.7mm).

Specific GravityPlywood, OSB and MDF
0.57Plywood Subfloor and Sheathing
0.62Oriented Strand Board (OSB)
0.70PermaCore® MDF