5-7 Cans Needed to Cover a Standard Bathtub Rust-Oleum Specialty Tub and Tile Aerosol. Apply Smooth, Porcelain-Like Finish in Just Minutes Refreshes with the look of porcelain or ceramic tile Superior Adhesion in Water Waterproof Epoxy Acrylic Formula Withstands Extreme Hot Temperature Excellent Wear & Abrasion Resistance Outstanding Color Retention in High Moisture Areas Available in White Works on Ceramic Tile and Porcelain Surfaces Demolition Apply 2-3 light coats, spraying horizontally and vertically. - Allow drying for 3 days before exposing it to water. Tips & Tricks: Use a standard household cleaner prior to painting. Avoid the use of muriatic acid.