If the slab is out of specification, consider grinding, floating or both. Many high spots can be removed by grinding; depressions can be filled with approved patching compounds; and slabs can also be flattened using self-levelling concrete products.
When sanding or grinding concrete, be sure to wear a mask. Apply water to the floor before sanding to limit dust.
Subfloor Must Be Dry: Refer to Chapter 6 (Moisture Testing)
