powerwashing4u
New member
I plan to wash some concrete with oil stains with Sodium Hydroxide (caustic soda beads) and TSP (Tri-sodium phosphate) mixed with 12% bleach. Oh, and of course heat! The thing that I want some feed back is what dwell time would you suggest???
PS. It has some rust stains that I will hit with acid first.
PS. It has some rust stains that I will hit with acid first.