go into sher-wms & buy h&c wtr-based satin conc sealer if you want fair results,,, if you want decent, buy their solvent-bas'd,,, if you want good, head to any conc supply house & get solvent-bas'd,,, if you want best, use epoxy w/urethane topcoat, polyureas, or polyaspartics,,, no epoxies on exterior - use only uv-resist mtls