How do you remove concrete stain on patio to prep for a new stain?
by
Tess
+3
Years ago we stained our concrete patio. Various parts lifted and it's a mess. We'd like to do it again.
Suggested Project Book
https://www.doityourself.com/stry/how-to-remove-concrete-acid-stain
How about 1cup vinegar, 2tbspoons of soda in 2cups of water with couple drops of dawn. Scrub with broom. Let sit for couple of hours then spray away. I spray with water hose, if can't just bucket of water and broom.
Depending on how old it is, you'll probably have to grind it off. As6shine2in1 says, the scrubbing will work but only if it is very old. If it is newer you'll have to grind it off. You can rent a large grinder at hardware store
Also, when you get all the old stuff off, do an acid wash before reapplying. Your new coat won't lift
We tried this and it cleaned the patio, but no luck removing the stain . I think we need something more powerful. Thank you for your advice!