08000 322 122
United Kingdom
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Republic of Ireland

Quinn Therm QW – Cavity Wall

Quinn Therm QW Cavity Wall PIR Insulation  is a high performance, fibre free board, with a rigid thermoset insulation core and faced on both sides with a low emissivity composite foil facing, for use in partial fill cavity wall applications. 

The low emissivity foil facings increases the thermal resistance of the residual cavity and reducing the overall U-value of the wall. 

The good dimensional tolerances of the QW Cavity Wall PIR Insulation board enabling it to be tightly butted to form a continuous layer of insulation.  

Available with profiled T & G edges aiding installation and ensuring continuity of insulation across the joint. 



  • QW-Cavity Wall board sizes are co-ordinated with standard wall tie spacings
  • Tongue and groove edging for continuity of insulation across joints
  • Zero ozone depletion potential (zero ODP) and low global warming potential (GWP)
  • Achieves an A+ rating when compared to the BRE Green Guide.

Performance & Properties:

BIM Objects:
Board size: 450mm x 1200mm
Thickness: 25mm – 110mm
Edge: Butt, tongue and groove
Thermal Conductivity (λ): 0.022mk
Facers: Low emissivity foil facers
Core water vapour resistivity: ≅300MNs/gm
Compressive strength: >150kPa