Using the scrub brush scrub the stain using a considerable amount of pressure.
Best way to clean rust stains off concrete.
What you need to remove rust stains from concrete hose with sprayer metal scrub brush lemon juice white vinegar.
How to remove rust from cement method 1 of 3.
Rinse and repeat if the concrete.
Fighting major rust stains.
For particularly stubborn stains rinse the acid away with a pressure washer.
Rinse and wash the concrete with soap and water before beginning.
Rinse the area off with cold water.
3 8 in a pump up sprayer i mixed a 50 50 solution of water and a product called acid magic.
A fairly new rust stain may succumb to the mild acid of white vinegar.
I m not sure power washing is important but i figured any surface dirt might insulate the rust deposits preventing them from being dissolved by the next step the acid.
Pour gallon of water in a pot.
Make sure the surface is clean apply the rust remover or acid following the instructions and safety precautions on the bottle let it sit for five to 10 minutes then scrub and rinse.
Lemonade rust stain removal.
Pour the vinegar over the stain let sit for 10 minutes then scrub with a stiff nylon brush.
Move on to commercial cleaners if vinegar and lemon juice don t work.
Use a brush that s appropriate for your concrete to avoid damaging it.
Place the pot on the stove and bring the water to a boil.