What is the minimum recommended moisture content for concrete before installing flooring?

The minimum recommended moisture content for concrete before installing flooring is typically around 4% or less. This threshold is important because excessive moisture in the concrete can lead to several issues after the flooring is installed, such as delamination, mold growth, and deterioration of the flooring materials. Maintaining a moisture content at or below this level helps ensure a stable and safe installation.

While other options may suggest different percentages as acceptable limits, the 4% figure aligns with industry best practices and guidelines. It serves as a benchmark that flooring installers should adhere to in order to promote the longevity and durability of the flooring system being applied. Ensuring that the concrete is adequately dried and prepared before installing any floor coverings is critical for preventing future complications.