850 Group has over 50 years of experience with a wide array of floor covering. Each with its unique application properties and installation systems. Our experienced professionals can assist with specifying right products for your commercial or residential needs. The #1 cause of flooring failures is moisture. Testing for moisture and other contaminates is critical. The ASTM-F-2170 standard is a testing method for determining the relative humidity (RH) that is present in concrete floor slabs. Using this testing method, contractors are better able to predict how a concrete slab will behave in its final use. This helps prevent contractors from installing on concrete subfloors that aren’t yet ready. Let us help you navigate this complex process.