To ensure the best results, only apply TotalBoat Traditional 5:1 Epoxy to fully cured TotalBoat Penetrating Epoxy, that has been properly prepared. Once the Penetrating Epoxy has cured fully, wash the surface of the Penetrating Epoxy with a mild soap and warm water, scrubbing lightly with an abrasive pad to remove any possible amine blush from the surface. Rinse and dry the surface completely. Then sand the surface with 80-grit sandpaper, until it has an even, but slightly rough texture. Apply TotalBoat Traditional 5:1 epoxy, as directed.