The muriatic acid etches the concrete allowing the color to seep into the concrete.
Removing rust stains from concrete with muriatic acid.
Muriatic acid is commonly recommended to clean and remove rust stains from 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.
While some stains can be rinsed away with a pressure washer tougher stains such as rust require an acid based cleaner like muriatic acid.
In these products the muriatic acid is mixed with a stain color.
It is also the primary component in most concrete staining products.