What is clear seal? Clear seal is that invisible layer of protection that penetrates into the pores of the grout. It is not waterproof. It will be the color that the grout is after cleaning. By FreeGren Marketing|2022-05-16T17:35:43+00:00September 2, 2021|Tile Cleaning| Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInWhatsAppTumblrPinterestVkXingEmail