Thin-R Plus Partial Fill CavityPlus [XT/CWP]

Xtratherm Partial Fill CavityPlus XT/CWP PIR is an enhanced PIR, CFC/HCFC free, manufactured using a blowing agent that has zero ozone depletion potential (ODP)

Manufactured in accordance with BS/IS EN 13165 Thermal insulation products for buildings. Factory made Rigid Polyurethane Foam (PUR) products. Specification.

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

Partial Fill CavityPlus achieves an A+ rating under the BRE Green Guide.


BBA Certified Thermal conductivity range: 0.021 W/mK
Facings: Low Emissivity Composite Foil Facings
Core: Rigid PIR Foam
Board size: 1200mm x 450mm
Board Profile: Tongue & Groove
Preformed Corner: Yes


Key Points

  • High Thermal Performance Rigid Insulation
  • Easy to Install
  • Non-deleterious material
  • Suitable for new build and refurbishment
  • Clear cavity is maintained
  • Low Emissivity Foil Facings to increase thermal resistance of cavity
  • Robust Engineered Jointing Detail
  • Avoids Potential Default Factor For Heat Loss At Joints
  • Reduces Thermal Bridging
  • Certified Lambda Value as low as 0.021 W/mK
  • Closed cell structure – moisture resistant


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