Concrete (Substrates)

Concrete conditions can significantly affect flooring performance even though most flooring inspectors do not perform structural or in-depth concrete evaluations. Concrete is typically assessed only as a substrate, with the primary goal of determining whether conditions were suitable for the flooring system that was installed.

In most inspections, the concrete slab is already covered by finished flooring, limiting evaluation to non-destructive observations and testing. As a result, inspectors commonly focus on indicators such as moisture conditions, flatness, surface preparation compatibility, alkalinity where accessible, and overall suitability of the substrate for the installed floor covering. Many inspectors also perform calcium chloride testing or in-situ relative humidity testing when exposed concrete is available or when required by manufacturer guidelines.

Visible concrete-related conditions, when present, are evaluated only for their potential influence on flooring performance rather than as independent concrete defects. When conditions cannot be adequately assessed without destructive testing, findings are typically documented and referral to qualified concrete or structural professionals may be recommended.