Sto EPS Foam

Sto EPS Insulation Board — Lightweight Foam Insulation for EIFS and Stucco Systems
Choose Sto EPS Insulation Board for continuous insulation that delivers dependable thermal performance and easy install on EIFS and stucco wall systems. This lightweight expanded polystyrene (EPS) board meets stringent ASTM and IBC standards, making it ideal for achieving energy efficiency targets in both residential and commercial construction.

Need a reliable insulation board that’s tested for durability and fire safety? Sto EPS is the trusted standard for StoTherm® ci and StoPanel® systems.

• Continuous R-value insulation helps reduce heating and cooling costs
• Meets ASTM and IBC code requirements for thermal resistance and compliance
• Lightweight and easy to cut for fast installation and custom detailing
• Tested for fire and durability within StoTherm® ci systems
• Compatible with EIFS, stucco, and StoPanel® cladding assemblies

System Composition & Coverage

• Board Size: 2 ft x 4 ft (609 mm x 1219 mm)
• Coverage Per Sheet: 8 square feet
• Available Thicknesses: 1" to 6" in ½" increments
• R-Value: R-3.6 per inch
• Application: For use in StoTherm® ci and StoPanel® systems as continuous exterior insulation

Product Bulletin

Code Compliance Evaluation