Delmhorst believes moisture-related issues are the number one reason for flooring failures in both residential and commercial construction. Within weeks of installation, resilient flooring over poorly prepared concrete can take on defects such as delamination, bubbling, bumps, curling, changes in color and mold development. A breakdown of adhesives and bonding materials can also occur quickly. Wood floors over concrete or any other type subfloor, if not properly acclimated and prepared, can develop warping, splits, and cracks.

The HT-4000F is a stand-alone thermo-hygrometer for flooring installers and inspectors. The meter’s detachable sensor makes the HT-4000F ideal for testing a concrete slab according to the ASTM F2170 standard. It has the same fast acclimating RH/T sensor found in the TotalCheck 3-in-1 moisture meter. For flooring contractors who prefer having separate meters to one combination meter, the HT-4000F is the perfect solution.

Delmhorst offers a complete line of moisture meters and thermo-hygrometers for flooring and the building trades including the HT-4000/F and TotalCheck packages with in-situ test capability. To learn more, visit