Polycoat ThemeCoat™ spray applied polyurethane hard coating for polystyrene and low density foams are designed to protect expanded polystyrene, urethane foam, scenery and props from impact. ThemeCoat™ provides an impact resistant shell that is sprayed on to add a durable, abrasion resistant finish to most lightweight foams, expanded polystyrenes and most other lightweight substrates. Theme Coat ™ is offered in a non fire retardant and a Class 1 E84 FR rating. https://www.polycoatusa.com/theming.php