The Cellecta HEXATHERM XROOF 300 range is a high-performance XPS insulation solution designed specifically for inverted flat roof applications where strength, durability, and moisture resistance are essential. Available in multiple thicknesses, this product family provides flexible design options for both new build and refurbishment roofing projects across domestic, commercial, and industrial sectors.

Manufactured from extruded polystyrene (XPS) with a closed-cell structure, XROOF 300 boards deliver consistent thermal efficiency while maintaining excellent compressive strength of 300kPa. This makes them suitable for roof systems subjected to regular loadings, including ballast, paving slabs, and green roof build-ups.

With extremely low water absorption and long-term resistance to freeze-thaw conditions, the XROOF 300 range is a trusted solution for inverted roof designs across the UK. Whether you are specifying insulation for residential extensions or large-scale commercial developments, this range offers dependable performance and design flexibility.

Key Benefits of XROOF 300 Range

• Designed for inverted flat roofing systems
• Available in multiple thicknesses for flexible specification
• High compressive strength of 300kPa
• Excellent thermal performance across all board sizes
• Resistant to water absorption and freeze-thaw cycles
• Durable closed-cell XPS structure
• Suitable for domestic, commercial, and industrial roofing
• Ideal for green roof and ballast applications
• Long-term thermal stability