Phosphoric Acid Garage Floor

Acid etching as a surface preparation is the process of applying an acid solution to a concrete surface allowing the acid to react with and etch the concrete.

Phosphoric acid garage floor.

Acid etching is the process of applying hydrochloric muriatic or buffered phosphoric acid to a slab then rinsing it off with water. Apply the diluted phosphoric acid to the concrete with a nylon scrub brush. Mix 1 part acid to 3 parts water for sufficient strength. Professionals recommend testing the strength needed on one area before applying it on the entire garage floor.

Phosphoric acid can emulsify oils something that hydrochloric acid is not capable of doing. Use a sprayer or watering can to distribute the acid. 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. Start on an area of concrete that isn t too noticeable.

Allow the solution to remain on the surface for about five minutes as you continue scrubbing with the brush. This is usually considered a concrete preparation step prior to the application of an epoxy floor paint garage epoxy. This ensures a more even application.