Hello Frank and thank you for your question.
The Rust-Oleum Tub and Tile Refinishing Kit will provide a smooth factory-like finish in three steps. Complete instructions can be viewed on the product label: http://rustoleum.com/cbgimages/docu...
After mixing Parts A and B together, the paint can be applied using a brush, roller, or sprayer in a well-ventilated room. Rust-Oleum recommends using a high-quality, short nap kitchen and bath roller OR a high-quality, fine bristle varnish brush OR a Wagner or HVLP conventional sprayer or airless sprayer.
Allow at least one hour to dry and then apply a second coat. Allow three (3) days before exposing to water.
Be sure to follow all manufacturer’s instructions for best results. Best wishes with your project.