The short answer
Polished concrete refines the slab itself ($3–$12/sq ft in Toronto). Nothing can peel because nothing is applied. Epoxy is a bonded coating ($4–$8/sq ft) that gives colour, seamlessness and chemical resistance but depends entirely on preparation. Sound slab and you want the concrete look: polish. Damaged slab, specific colour, or chemical exposure: coat.
What each one actually is
Polished concrete is not a coating. It is the slab itself, mechanically ground with progressively finer diamonds, chemically densified to harden the surface, then polished to a chosen sheen. There is nothing on top to peel.
Epoxy is a coating system applied over a prepared slab: a bonded base coat, optional colour or decorative flake, and a protective topcoat. It creates a new, seamless surface with its own colour and chemical resistance.
How they compare
Durability: both are hard-wearing. Polished concrete cannot delaminate because there is no coating, but it can show wear patterns over decades. Epoxy resists chemicals and stains extremely well but can eventually chip or, if poorly installed, peel.
Look and maintenance: polished concrete gives a natural, architectural stone-like finish and cleans with water. Epoxy offers colours, flake blends and a fully uniform look that hides an imperfect slab. Both are low-maintenance compared with tile or coated wood.
Cost and slab condition: polishing suits a sound, reasonably flat slab. If the slab is damaged, oil-soaked, or you want a specific colour or a garage floor that shrugs off road salt, a coating, often a polyaspartic-topped system, is usually the better answer.
Which to choose
For a sound interior slab where you want the concrete look and minimal upkeep (basements, living spaces, showrooms, condo lobbies) polishing is often the pick. For garages, workshops and floors that see chemicals, salt or a damaged slab, a coating wins. Moisture matters too: below-grade floors should be moisture-tested before either option.
Key takeaways
- Polished concrete refines the slab itself; epoxy adds a new coated surface.
- Polishing suits sound, flat slabs and a natural look; epoxy suits damaged slabs, colour and chemical resistance.
- For salt-exposed garages, a polyaspartic-topped coating usually beats both.
- Test below-grade slabs for moisture before choosing.
Frequently asked
Which lasts longer?
Both last many years when done right. Polished concrete cannot peel; epoxy resists chemicals and stains better. The right choice depends on the slab and the use, not a single durability number.
Can any slab be polished?
Most sound interior slabs can, but badly damaged, soft or oil-soaked slabs may need repair first or are better suited to a coating.
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