Why Your Epoxy Floor Failed — And How to Prevent It

The most common reason epoxy floors fail is inadequate surface preparation. The coating itself is rarely the problem — it's what's underneath.

Concrete surfaces need to be profiled (roughened) for the epoxy to bond mechanically. Without diamond grinding or shot blasting, the coating sits on top of the surface rather than bonding into it.

Moisture is the second biggest cause of failure. If concrete has elevated moisture levels, the epoxy will blister and delaminate. Proper moisture testing before application is essential.

Other common causes include applying over contaminated surfaces (oil, grease, curing compounds), insufficient thickness, and not allowing proper cure time between coats.

At HOW Flooring, surface preparation is the largest single step in our process. We never skip it, because we know it determines the floor's lifespan. Contact us for a free site assessment.