Yellowing, or ambering, is the gradual amber tint some coatings develop over time from UV exposure, most noticeable in clear epoxy topcoats in sunlight.

Outgassing is when air or moisture vapor trapped in porous concrete escapes up through a wet coating, leaving pinholes, bubbles, or craters in the finish.

Delamination is when a coating separates from the concrete underneath it, or when one coat separates from another, usually showing up as peeling, bubbling, or flaking.

Pinholing is a coating defect where tiny holes form in the cured film, usually caused by escaping air or moisture vapor.

Fisheyes are small circular craters or depressions that form in a wet coating, usually caused by surface contamination.

Concrete spalling is the chipping or flaking away of a slab’s surface, often caused by freeze-thaw cycles, corroding rebar, or trapped moisture.

Amine blush is a waxy or greasy film that can form on curing epoxy, usually from cold, humid conditions during cure.

Hot tire pickup is when a hot car tire lifts or softens an epoxy coating, leaving marks or peeling where the tire sat.