Concrete Stain:
Acid vs. Water-Based,
Costs & What Lasts

Concrete stain changes the color of the slab itself instead of laying a film of paint on top of it. Done right it gives you a translucent, stone-like finish that will not peel, because there is nothing there to peel. Done on the wrong slab it highlights every patch, trowel mark and oil spot you were hoping to hide. We coat concrete for a living, and we see a lot of stained floors that needed something else. This guide covers the four kinds of concrete stain, what each one costs and covers per gallon, how to tell if your slab will take stain at all, and two tools: a stain selector and a gallons and cost calculator.

Concrete stain comparison table

Coverage and cost figures come from manufacturer data sheets and 2026 cost guides. Click any column header to sort.

How to stain concrete, step by step

This is the acid stain sequence, since it has the most steps. Water-based stains skip the reaction and neutralizing steps but need the same cleaning, testing and sealing. Always follow the data sheet for the product in your hand; dwell times and dilution vary by brand.

1. Let new concrete cure

   Concrete Network puts full cure at 21 to 28 days, Concrete Coatings asks for 28, and Behr's stains require a minimum of 30. Staining green concrete gives blotchy, unpredictable color.

2. Strip and clean

   Remove sealer, paint, mastic, curing compound and grease. A degreaser and scrubber handles light soil; old coatings usually need grinding. Anything left on the surface blocks the stain.

3. Do the water drop test

   Behr's instruction is simple: sprinkle water on the surface, and if it is quickly absorbed, the surface is ready. If it beads, something is still sealing the pores.

4. Test a hidden area

   Bottle color is not floor color. Concrete Coatings tells installers to choose colors only from test sections on the actual slab. Let the test dry and seal it before you judge it, because sealer deepens the color.

5. Apply the stain

   Spray with an acid-resistant plastic sprayer and work it in with a brush in overlapping circles. Kemiko's standard mix is one part water to one part stain; one diluted gallon covers about 800 sq ft in one application or 400 sq ft in two.

6. Let it react

   Acid stain color usually develops in two to four hours. Keep traffic off and do not let water drip on it.

7. Neutralize and rinse

   Scrub off the residue with a neutralizer. Concrete Network lists TSP, baking soda or ammonia, and gives a mix of one tablespoon of baking soda per gallon of water. Keep mopping until the mop water runs clear; leftover residue is the number one reason sealers fail on stained floors.

8. Dry, then seal

   Wait at least 24 hours before sealing, per Concrete Coatings. Most stain makers recommend two coats of sealer, according to Concrete Network.

Sealing stained concrete: the part that wears

Stain is not a wear layer. On every stained floor we look at, the color is fine and the sealer is what has failed: scratched, dull, peeling at the doorway or lifted under car tires. Pick the sealer for the traffic, not for the price of the first coat.

Acrylic sealer

The default on patios and lightly used interiors. Angi lists acrylic sealer materials at $0.85 to $1.15 per sq ft, and HomeGuide says sealing typically needs repeating every one to three years. It is easy to recoat, which is the point. It is soft, though, and it does not like hot tires.

Polyurethane and epoxy

Harder and more chemical resistant. Angi puts polyurethane sealer materials at $0.95 to $1.10 per sq ft and epoxy at $3 to $7. Epoxy belongs indoors; most standard epoxies yellow in sunlight. Both need a mechanically clean, residue-free surface or they will delaminate, taking the top skin of stained concrete with them.

High-performance clear topcoats

For garages, shops and commercial floors, a stained slab needs a topcoat built for tires and chemicals, typically a polyaspartic or aliphatic polyurethane. This is where we come in. ArmorThane applicators install ArmorFloor aliphatic polyaspartic systems, and our polyaspartic floor coating guide explains how those cure and wear. For an overview of penetrating versus film-forming sealers, see our concrete sealer guide. If you are weighing a colored, polished slab against a full coating, our polished concrete vs epoxy comparison runs the numbers.

Concrete stain questions