Xtratherm Sarking is an engineered external roof insulation system to meet a U-value of 0.15W/m2K and achieve improved thermal bridging and air tightness detailing in a single layer solution for warm pitched roofs.

BS EN ISO 9001 Quality Management Systems
BS EN ISO 14001 Environmental Management Systems

Thin-R PIR achieves an A+ rating under the BRE Green Guide.


BBA Certified Thermal conductivity: 0.021 W/mK
Facings: Robust Foil Facing
Core: Modified Rigid PIR Foam
Board size: 2400mm x 1200mm
Thickness: 75mm, 100mm, 125mm
Board Profile: Tongue & Groove


Key Points

  • Advanced Engineered Detailing
  • Improved Precision
  • Excellent Thermal Bridging Y-Value
  • 0.15 U-Value in single layer
  • Provides uniform plane
  • Effective Warm Roof Insulation
  • Easy to Install
  • High Thermal Performance Rigid Insulation



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Xtratherm accepts no responsibility for errors or omissions on the website.