Acid stain for indoor concrete. Acid staining is a permanent of impregnating a finished concrete floor with colour. The effect is randomized based on how the concrete takes the stain. A picture of my floor is included. I have Seagreen (verdigris), Azure Blue, Amber, Weathered Bronze, and Tannin (the last two are shades of brown) plus concrete etcher and naturalizer (to neutralize the acid after it has reacted with the concrete). I have enough stain to do 3,000-4,000 square feet. I built a new house and was expecting to do at least two coats but one did the trick. I did the floor myself. Available for pick up in North Saanich - 4 medium sized boxes. Feel free to ask about the process if you are not familiar with it.