Direct Colors Q & A Series answers tough decorative concrete questions for DIYers. Can I successfully acid stain rough and textured concrete floors?
As the acid stain dries and processes, an alkali and minerals residue will form on the surface of the concrete. This is completely normal and is part of the reaction process. Each stain has different activation times to fully color the concrete, generally from 4 to 8 hours. Acid stain can be left on the surface longer if desired.
Acid Stain activation times listed below are minimum times for the listed acid stain color.