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
COVID-19 Announcement: Wagner Meters is not expecting disruptions in our ability to continue to serve and support our customers during this time. We are closely monitoring the situation as it unfolds to maintain our employee’s health and meet the needs of our customers. We are thinking and praying for all of those affected.

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