RH Testing: Why Drill at 40% Depth
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Last updated on October 6th, 2026
Home » RH Testing: Why Drill at 40% Depth
Jason Spangler, Vice President of Sales for Wagner Meters, explains the science behind the 40% depth requirement in ASTM F2170, the depth at which a slab drying from one side shows the moisture condition it will reach once a floor covering is down.
Last updated on October 6th, 2026