TFC Grout Seal is a specially formulated sealer for sealing and protecting grout that is porous. In cases where glazed tiles have been applied to the floor, very often the grout has not been made waterproof and therefore the grout is porous and will get dirty from regular cleaning. TFC Grout Seal is designed to seal floor grout mainly but may be used on wall grout. By sealing the grout you help to make the area more hygienic.