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
In celebration of the Thanksgiving, we will be closed November 22nd & 23rd.
We will not be shipping on these days, but will resume shipping on Monday, November 26th.