• Diagram of Sto EIFS system showing layers with Pro-D drainage insulation foam board highlighted, illustrating its position and function within the exterior insulation and finish system
  • Diagram showing V-grooves on Pro-D drainage foam board insulation with detailed dimensions for enhanced drainage performance in EIFS systems
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Sto EPS ProD® Foam

Sto EPS ProD® Foam

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Sto EPS ProD® Insulation Board — Drainable EPS Foam for EIFS and Stucco Systems
Boost thermal performance and moisture control with Sto EPS ProD® — a rigid expanded polystyrene (EPS) foam board engineered for EIFS and stucco wall assemblies. Featuring a geometrically grooved drainage cavity, this insulation board promotes airflow behind the cladding to prevent moisture buildup while delivering continuous R-value insulation.

Upgrading your façade system? Choose Sto EPS ProD® for high-efficiency drainage and reliable thermal performance.

  • Defined drainage channels manage moisture and support drying behind EIFS or stucco
  • Lightweight, easy-to-cut EPS foam simplifies installation and customization on site
  • Continuous R-value of R-3.7 per inch for dependable energy efficiency
  • Meets CAN/ULC S701 and ASTM E2430 for full compliance with Canadian and U.S. building codes
  • Fully tested in StoTherm® ci systems for fire safety, durability, and long-term system integrity

System Composition & Coverage

  • Board Size: 2 ft x 4 ft (609 mm x 1219 mm)
  • Coverage Per Sheet: 8 square feet
  • Available Thicknesses: From 2" to 6.5" in ½" increments
  • R-Value: R-3.7 per inch
  • Application: Designed for StoTherm® ci exterior insulation and finish systems with integrated drainage

Product Bulletin

Code Compliance Evaluation

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