Phosphoric Acid Garage Floor

This is usually considered a concrete preparation step prior to the application of an epoxy floor paint garage epoxy.

Phosphoric acid garage floor.

Do not allow the phosphoric acid to dry on the concrete. Rather than pour all of the acid onto one spot of the floor which can leave some of the acid spent by the time it reaches the far corners of the concrete use a plastic sprayer or watering can. Apply the diluted phosphoric acid to the concrete with a nylon scrub brush. Allow the solution to remain on the surface for about five minutes as you continue scrubbing with the brush.

Acid etching is the process of applying hydrochloric muriatic or buffered phosphoric acid to a slab then rinsing it off with water. Phosphoric acid can emulsify oils something that hydrochloric acid is not capable of doing. 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. Both types of acids can remove rust from concrete flooring.

Start on an area of concrete that isn t too noticeable. 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.