7100 Rosco FoamCoat – Professional Foam Hardener & Protective Coating

Transform your foam projects with Rosco FoamCoat, the versatile, non-toxic, water-based coating that delivers professional protection and durability. Specially formulated for EPS and XPS foams (commonly known as styrofoam), FoamCoat provides a strong, impact-resistant shell that keeps scenery, props, and creative builds looking great show after show.

Perfect for theatre, film, exhibitions, theme parks, haunted houses, and even DIY projects, FoamCoat combines strength with creative flexibility. It dries to a rock-hard finish that resists dents and chips without adding unnecessary weight — making it ideal for large scenic pieces that need to be both durable and portable.

Key Features

• Durable Finish: Rock-hard coating resists chipping and cracking while still allowing sanding, carving, and texturing
• Versatile Application: Bonds to foam, primed wood, concrete block, fiberglass, papier mâché, and more
• Creative Flexibility: Accepts textures, stamps, stippling, or carving to create stone, rock, or architectural effects
• Flame Retardant: Enhances safety for theatrical, exhibition, and event productions
• Water Resistant: Suitable for indoor and outdoor use (with topcoat)
• Safe & Easy to Use: Non-toxic, low odor, water-based formula cleans up with soap and water
• Compatible: Works seamlessly with Rosco Scenic Paints for professional finishes

Application Methods

• Brush
• Roller
• Hopper spray gun

💡 Pro Tip: For fine details, apply thin successive coats. For a smooth finish, lightly sponge the surface with water before the final set. For maximum strength, apply thicker layers and allow full curing.

Perfect For

• Hard-coating foam scenery, props, and stage elements
• Strengthening lightweight constructions for repeated handling
• Themed environments, attractions, exhibitions, and displays
• Creating durable stone, rock, or architectural textures

Surface Preparation

Foam: Clean and dry surfaces before application

Wood & Plastic: Prime with Rosco Tough Prime

Difficult Surfaces: Light sanding recommended for better adhesion

Mixing & Application

• Stir thoroughly before use (power mixing recommended)
• Apply undiluted for maximum strength
• Dilute slightly with water for smoother flow and fine detail

Technical Specifications

• Color: Off-white, matte finish
• Coverage: Approx. 150 sq. ft per gallon (12–16 m²)
• Film Thickness: 1/16" – 3/16" per application
• Dry Time: 2–8 hours (24 hours for full cure)
• Clean-Up: Soap and water
• Shelf Life: Minimum 24 months (sealed container)
• Packaging: 1 Gallon