Extruded Polystyrene External Boards

XPS (extruded polystyrene) sheets are a highly effective insulation material commonly used for external wall insulation (EWI) applications. Renowned for their excellent thermal performance, XPS sheets are particularly beneficial in reducing heat loss and improving energy efficiency in buildings. One of their key advantages is their ability to be installed below the damp proof course (DPC) level, making them suitable for use in areas prone to moisture exposure.

XPS sheets are inherently waterproof, providing a robust barrier against water ingress, which helps to prevent damp and mould issues. This moisture resistance, combined with their durability and compressive strength, makes XPS an ideal choice for both new builds and renovation projects. Available in various thicknesses, XPS sheets not only enhance the thermal comfort of a property but also contribute to its long-term structural integrity.

Benefits

• Recyclable,
• Won't support mould or mildew growth,
• Long-term, stable R-value,
• Can be placed below grade,
• Can be utilized for inverted assemblies,
• XPS insulation is more moisture-resistant than EPS insulation,
• XPS insulation holds R-value better than EPS insulation at lower mean temperatures when water is present.