Hydrochloric Acid Concrete Stain

Acid etching is the process of applying hydrochloric muriatic or buffered phosphoric acid to a slab then rinsing it off with water.

Hydrochloric acid concrete stain.

They work by penetrating the surface and reacting chemically with the hydrated lime calcium hydroxide in the concrete. The acid in the stain lightly etches the surface allowing the metallic salts to penetrate more easily. For many years it was a standard method of concrete preparation used by nearly all industrial commercial and institutional floor coating installers depending on the floor size and system to be installed. Muratic acid is a reactive chemical acid.

While some stains can be rinsed away with a pressure washer tougher stains such as rust require an acid based cleaner like muriatic acid. To remove stains carefully handle the hydraulic acid and hydraulic acid is the most effective way to remove the rust stains. Most acid stains are a mixture of water hydrochloric acid and acid soluble metallic salts. Then mix 3 or 4 parts water with 1 part muriatic or hydrochloric acid in a plastic bucket.

The acid in the stain lightly etches the surface allowing the metallic salts to penetrate more easily. Mix two cups of acid with one cup of water. You need to act quickly because this acid can tint your concrete blue if left for a long time. They work by penetrating the surface and reacting chemically with the hydrated lime calcium hydroxide in the concrete.

It can cause black scorched like stains on stainless steel or discoloration stains on grout and tile if not removed it can eat away at the grout. Lithochrome chemstain classic is the ready to use penetrating acid stain that chemically reacts with the surface of cured concrete to produce unique and permanent color effects. Hydraulic acid to remove stains. Most acid stains are a mixture of water hydrochloric acid and acid soluble metallic salts.

Metallic acid salts and hydrochloric acid in the stain penetrate the surface and react with concrete s natural lime content to impart deep hues that won t fade or peel off. If you re just removing mineral deposits efflorescence use a much weaker mix 10 1 or 16 1 for muriatic acid. Mix 3 to 4 parts water with 1 part acid or follow label instructions for a 10 concentration 15 for hard smooth concrete. Lithochrome chemstain classic colors and enhances but will not hide the unique surface blemishes in the concrete.

Mold rust and other stains can mar the clean beauty of your concrete lessening the visual impact and even the curb appeal of your property. Let the acid sit for 5 to 10 minutes.