Rust-Oleum Floor Tile Grout Paint is designed to revive and protect floor grout in humid bathrooms, busy kitchens and high-traffic areas like your porch and hallway. With an ultra-durable satin finish, the specialist formula is water-resistant within 24 hours, offering protection against drips and splashes. For use directly on grout without a primer, the specially formulated Grout Paint is ideal for a cost-effective tile touch-up without the upheaval or expense of regrouting.