Hi guys!
I just joined today and look forward to making new friends in the industry. I’m a relative newbie to pressure washing so any help would be greatly appreciated. I took a flat work course at the pwna convention and the instructor was saying that applying oxalic after cleaning concrete will brighten better than bleach. Did I understand correctly? Should I down stream or should I use a pump up sprayer? How strong should I mix it? Also should I let it dwell and then rinse or should I leave be? Yikes!! I hope I’m not asking too much!!
