Water-Resistant Insulation for Foundations U.S. HFC Regulation Compliant Formulation
DuPont™️ Styrofoam™️ Brand Square Edge Extruded Polystyrene (XPS) Foam Insulation* is a grey, extruded polystyrene foam (XPS) insulation board that provides continuous insulation over steel stud or wood framing, in masonry unit cavity walls, conventional roofs and meets the needs of the commercial foundation and building floor slab needs. It can also be used for attics, foundations/slabs and crawl spaces in residential applications.
With more than 60 years of proven performance in wet environments, the closed-cell structure of Styrofoam™️ Brand Square Edge Insulation resists water pickup, enabling it to retain a high R-value** over time – a necessary property in wet, below-grade commercial foundation and commercial roofing applications.
Styrofoam™️ Brand Square Edge Insulation is classified as a Type IV product when tested in accordance with ASTM C578 and provides a long term insulating performance of R-5 per inch.
Features and Benefits
- Ease of Installation: Easy to handle, cut using a utility knife or serrated blade, and install. Available in a wide selection of sizes and thicknesses. Designed to ensure energy efficiency and minimize on-site cutting and waste. Provides a secondary barrier against groundwater leakage and helps protect foundation damp proofing and waterproofing during backfilling. Minimizes freeze–thaw cycling of the foundation, reducing cracking potential. Warms the foundation to reduce condensation. Will not corrode, rot, or support mold growth.
- High Performance Durability: Provides a weather-resistant barrier to enhance building resistance to air and moisture penetration. Resistant to degradation from soil components and retains insulating performance even after prolonged moisture exposure. Offers a minimum compressive strength of 25 psi and a flexural strength of 50 psi. Suitable for applications such as sheathing, foundation walls, masonry cavity walls, and more.