How to Clean an Epoxy or Coated Garage Floor (the Right Way)
The simple routine, what to avoid, removing oil and road salt, and pressure-washing - without dulling the finish.
Cleaning a coated garage floor is easy: sweep the grit, damp-mop with a pH-neutral cleaner, and rinse. Because the surface is sealed and non-porous, nothing soaks in - the whole point of coating concrete. The only real rules are what not to use (vinegar, citrus, and dish soap, which dull the gloss) and staying on top of road salt in winter. Here is the full routine, including oil stains and pressure washing.
The basic routine
- Clear and sweep. Remove items, then dust-mop or shop-vac loose dirt and grit (grit is what dulls a finish over time).
- Damp-mop. Use a pH-neutral floor cleaner, or about 5 oz of clear ammonia per gallon of warm water for a streak-free finish. Rinse the mop often.
- Rinse and squeegee. Rinse with clean water and push it out the door with an 18-24 inch squeegee.
This mirrors what manufacturers like Simple Green and Sherwin-Williams recommend for resin floors.
What to avoid
- Vinegar and citrus cleaners - acids that slowly dull the gloss.
- Dish soap - leaves a slippery, hazy film.
- Harsh solvents and undiluted bleach - unnecessary and can affect the finish.
The short version
Sweep, then damp-mop with anything pH-neutral. Skip vinegar, citrus, and dish soap. Rinse off road salt in winter. That is the whole job - a sealed floor is built to be low-maintenance.
Oil and grease
On a sealed coating, oil rests on the surface instead of staining the concrete. Wipe fresh drips with a rag; for stubborn spots, a degreaser like Simple Green and a soft brush lift it, then rinse. This is a major upgrade over bare or sealed-only concrete, where oil etches in.
Road salt and winter
Around Kenosha and the rest of the corridor, winter slush carries road salt that destroys bare slabs through freeze-thaw. On a coated floor it just sits on top - let it drip, then mop or rinse the residue every week or two so it does not build up. That is the difference a coating makes, and why we install UV- and salt-resistant polyaspartic systems here.
Pressure washing
A sealed floor takes a pressure washer well. Pre-treat with a floor-safe detergent if needed, run 1,500-3,000 PSI from the back toward the door, and squeegee out. Avoid citrus and vinegar additives. That is the deepest clean a coated garage floor will ever need.
Easy maintenance is one of the reasons a coating pays off - the full value case is in is it worth it. Thinking about getting one? Locals can start on the Kenosha page, or get an instant estimate below.