A Valence Covalent Flake floor is chemically resistant to the stuff that usually ruins garage concrete — road salt, deicers, gasoline, oil, brake fluid. That does not mean it is invincible. A short list of aggressive chemicals and bad cleaning habits can still dull the topcoat or cause long-term problems. Here is the list I give every customer on installation day.
Chemicals to keep off the floor
Muriatic acid and other strong acids
This is the big one. Muriatic acid is used to etch bare concrete. It will attack a polyaspartic topcoat given enough concentration and dwell time. Never use it on a coated floor, period. Not for cleaning, not for rust removal, not for anything. If you need to etch concrete in another part of your garage, do it before the coating goes on or do it well away from the coated area and rinse thoroughly.
Other acids to avoid at concentration: hydrochloric, sulfuric, phosphoric. Dilute household vinegar (acetic acid) is fine for occasional use on a stubborn salt haze. That is as aggressive as I would go.
Straight bleach
Diluted bleach for an occasional spot sanitation is okay. Straight bleach sitting on the floor for long periods can dull the topcoat and fade flake color. If you are killing mildew, mix it 10 to 1 with water, use it, rinse it off within a few minutes.
Strong ammonia
Same deal. Household glass cleaner with a little ammonia is fine for wiping a spot. Industrial ammonia at concentration is not. The polyaspartic can take a lot, but prolonged exposure to high-concentration ammonia is one of the few things I tell people to actively avoid.
Petroleum solvents left to soak
Gasoline, mineral spirits, lacquer thinner, acetone, brake cleaner. Wiping a spot and cleaning it up is fine — polyaspartic is chemically resistant and a short exposure will not hurt it. The problem is letting a solvent-soaked rag sit on the floor overnight, or spilling a gallon of thinner and walking away. Prolonged contact is the enemy. Wipe and rinse.
Paint stripper
Methylene chloride and similar active paint strippers are designed to remove coatings. That includes mine. If you are stripping furniture in the garage, lay down plastic first.
Tools and methods to avoid
Pressure washers
I know, I know, pressure washers are fun. But here is the problem: at 2000 to 3000 PSI you can force water under the coating where it terminates at walls, expansion joints, or the overhead door edge. Once water gets under a coating, you get blistering or delamination over time. A garden hose with a regular spray nozzle is plenty for any residential cleaning job.
If you absolutely must use a pressure washer (commercial space, extreme grime), keep it under 1500 PSI, use a wide fan tip, stay 18 inches off the floor, and never point directly at the edges.
Steel wool
Steel wool will scratch polyaspartic. It is not even a question. If you need to scrub something, use a white nylon scrub pad or a soft deck brush. White pads are non-abrasive enough to be safe. Green or brown pads (heavy duty) will dull the finish — skip them.
Abrasive powders
Comet, Ajax, Bar Keepers Friend, any scouring powder with grit. These are designed to abrade. On a countertop that is fine. On a floor coating that is a bad day. The flake texture will hide a little damage but you can wear through the topcoat over time if you keep scrubbing with grit.
Wire brushes
Obvious but worth saying. A wire brush on a polyaspartic floor will leave gouges. If something is stuck badly enough that you are reaching for a wire brush, call me instead.
Floor buffers with aggressive pads
A soft-pad floor buffer or auto-scrubber is fine for a big commercial space. Anything with a stripping pad or grit-impregnated pad is not. Keep it soft.
What to use instead
For 95% of cleaning:
- Warm water and a neutral pH cleaner (Simple Green, Zep Neutral, or similar)
- Soft-bristle push broom for sweeping
- Microfiber flat mop or soft deck brush for scrubbing
- Garden hose for rinsing
- Squeegee or let it air dry
For stubborn spots:
- Degreaser (Purple Power, Krud Kutter) for oil, grease, tire marks
- White nylon scrub pad for agitation
- Diluted vinegar (50/50) once a year max for mineral haze
That is the whole kit. Nothing exotic, nothing aggressive, nothing that costs more than $20 at the hardware store.
What about specific brand-name products?
Customers ask me about specific cleaners all the time. Here is the quick cheat sheet:
- Simple Green (regular): Fine, this is my go-to.
- Dawn dish soap: Fine for spot cleaning and light mopping.
- Purple Power / Krud Kutter: Fine as degreasers for oil and grease spots.
- Pine-Sol: Fine diluted, do not use full strength.
- Fabuloso / Mr. Clean: Fine, neutral enough for routine use.
- CLR / Lime-A-Way: Skip these. They are acidic descalers and too aggressive for a topcoat.
- Goo Gone: Okay for removing adhesive residue in a small spot, wipe and rinse.
- WD-40: Not a cleaner. Do not use it on the floor.
When in doubt, check the label for pH. Anything labeled neutral or close to pH 7 is safe. Anything labeled acidic (low pH) or strongly alkaline (high pH) I would skip or dilute heavily.
Why I'm picky about this
I have seen what happens with the wrong products on the wrong floor, and a lot of it is avoidable. The Valence system I install is engineered to resist real garage chemicals — the stuff that leaks out of cars and gets tracked in on boots. It is not engineered to be a lab bench for someone trying to strip their floor with acid. Treat it like what it is, a durable residential finish, and it lasts.
If you ever have a spill and you are not sure if it is safe, snap a photo and text me. I would rather you ask than guess wrong. For more on how the system handles real chemicals in real garages, see my post on polyurea versus epoxy.
Get a free quote or call Dave at (715) 307-8302.