How can a 9-month concrete slab still be at 95% RH?

Never assume a concrete slab is dry, even months after the pour. Jason Spangler, Vice President of Sales for Wagner Meters, explains what good drying conditions look like: windows in, the building enclosed, and ambient temperature and humidity where they need to be.

Three things commonly get in the way:

• Enclosing the building too quickly, before the slab has had drying conditions
• Curing compounds that seal moisture in
• Over power-troweling, which closes off the surface moisture needs to escape through

For the other side of this, see how to get concrete to dry faster.

Shop Rapid RH