Ensure your surface is clean, dry and free of all loose, peeling paint or contaminants. Areas where ponding water is evident should be leveled prior to application. Bare concrete: Allow 60 days minimum for new concrete to cure before painting. Clean, degrease and etch new or bare concrete with Valspar® Fast Prep™. Previously painted surfaces: Clean with an all-purpose cleaner (TSP or substitute), and remove gloss from shiny surfaces by sanding or using a chemical deglosser.