Can epoxy flooring be installed over existing concrete?

Yes, epoxy flooring can be successfully installed over existing concrete in residential, commercial, and industrial spaces, provided the concrete is properly prepared. This preparation is crucial for ensuring a strong, lasting bond and preventing premature failure of the epoxy coating.

For a durable installation, the existing concrete must be clean, dry, structurally sound, and free of contaminants like oil, grease, or old sealers. Professional contractors in Surrey BC and the Lower Mainland typically perform mechanical diamond grinding or shot blasting to achieve a Concrete Surface Profile (CSP) of 2-3, which opens the pores of the concrete for optimal adhesion, unlike less effective acid etching methods. Additionally, moisture testing is essential, as high moisture levels can cause blistering or delamination, sometimes requiring a moisture vapour barrier. Any cracks, pitting, or spalling must be repaired with professional-grade fillers before epoxy application to ensure a smooth, seamless finish. Skipping these critical preparation steps is the leading cause of epoxy floor failures, with 60-80% of premature coating failures attributed to inadequate surface preparation.