What is the difference between Acid Concrete Stains and Other Concrete Stains?

The major difference between acid concrete stains and any other type of concrete stain is the fact that acid staining involves a chemical reaction whereas the others do not. That's the short answer but I will elaborate on that to give you a better understanding.

Acid stains chemically react with the cementitious material on the surface of concrete. The result of this reaction is permanent color. Because there is much variation throughout the surface of concrete, acid stains produce a variegated or mottled look somewhat like marble.

Acrylic concrete stains are simply pigments carried or susupended in a solution, usually water. There is no chemical reaction, the stain simply seeps into the pores and the pigments adhere to the concrete. The result is a more uniform color than that of acid stains.

Another difference between the two stains is the availability of colors. Acid stains come in fewer colors which are mainly earth tones such as browns and greens. Acrylic stains come in a wide array of colors that cover almost the entire sprectrum.

Both types of stains, however, result in translucent coloring meaning that surface textures and variations are still visible. This is what makes them attractive aside from the fact that they won't peel or flake like paint.

Acrylic stains tend to be more user friendly. Not only are they safer to handle, but easier to apply. Your chances of making mistakes are less likely.

For most jobs I prefer to go with the acid stains if the concrete is suitable. This is simply because of the antique, elegant appearance. Although, I don't like having to go through the neutralization and cleaning process which isn't necessary with acrylics.

It is possible to use a combination of acid stains and acrylic stains on the same slab. We often use acrylic stains to fix acid staining jobs that didn't turn out too well.