Hydrochloric Acid Concrete Stain

While some stains can be rinsed away with a pressure washer tougher stains such as rust require an acid based cleaner like muriatic acid.

Hydrochloric acid concrete stain.

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. To remove stains carefully handle the hydraulic acid and hydraulic acid is the most effective way to remove the rust stains.

Mix 3 to 4 parts water with 1 part acid or follow label instructions for a 10 concentration 15 for hard smooth concrete. Hydraulic acid to remove stains. The acid in the stain lightly etches the surface allowing the metallic salts to penetrate more easily. 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.

Once the muratic acid works its way into stainless steel grout or tile it can be hard to remove. 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. These solutions are for etching the concrete. The acid in the stain lightly etches the surface allowing the metallic salts to penetrate more easily.

Then mix 3 or 4 parts water with 1 part muriatic or hydrochloric acid in a plastic bucket. Let the acid sit for 5 to 10 minutes. Lithochrome chemstain classic colors and enhances but will not hide the unique surface blemishes in the concrete. When you acid etch concrete wear long sleeves gloves eye protection and a face mask to protect yourself from stray acid.

You need to act quickly because this acid can tint your concrete blue if left for a long time. Acid etching is the process of applying hydrochloric muriatic or buffered phosphoric acid to a slab then rinsing it off with water. 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. Most acid stains are a mixture of water hydrochloric acid and acid soluble metallic salts.

They work by penetrating the surface and reacting chemically with the hydrated lime calcium hydroxide in the concrete. Mix two cups of acid with one cup of water.