Remove all the stains from the concrete pavers, using Gator Clean products. Use Gator Sealer Stripper to remove any unknown coating that remains on the concrete paver surface.
Remove all contaminated jointing material and replace with Gator Polymeric Sand. Follow the instructions on the back of the bags for proper sand installation.
Wait at least 48 hours at a minimum temperature of 32°F (0°C) and no rain for the Gator Polymeric Sand to properly harden.
Clean the entire surface with the Gator Efflorescence Cleaner. This product will remove the efflorescence trapped in the concrete paver pores as well as thoroughly clean the surface for proper sealer adhesion.
Wait at least 48 hours at a minimum temperature of 32°F (0°C) and no rain so the sand and concrete paver surface are dry.