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PIR (WALLS)
1 - External brickwork
2 - Quinn Therm QW boards 3 - Cavity tray
4 - Internal blockwork
5 - Internal finish
U-value results below based upon wall construction shown:
103mm brick outer leaf; 40 - 50mm low emissivity residual cavity; Quinn Therm QW, 100mm concrete block (conductivity as shown); 12mm plaster. Brick and block leaves with 10mm nominal mortar joints. Calculations performed to
BS EN ISO 6946, taking account of repeating thermal bridges.
5 2
4
1
3
Required thickness of Quinn Therm QW for different blocks
Partial fill QW insulation with internal plasterboard on plaster dabs.
Inner leaf Conductivity (W/m 2K)
Dense block 1.33
Others 0.45
Others 0.3
Quinn Lite
0.19 0.17 0.12
thickness (mm)
50 60 65 70 75 80
100 110
0.29 0.28 0.25 0.25 0.24 0.23 0.23 0.22 0.22 0.21 0.21 0.20 0.17 0.17 0.16 0.16
U-value (W/m 2K)
0.27 0.26 0.26 0.24 0.24 0.23 0.23 0.22 0.23 0.22 0.22 0.21 0.22 0.21 0.21 0.20 0.21 0.20 0.20 0.19 0.20 0.19 0.19 0.18 0.17 0.16 0.16 0.16 0.15 0.15 0.15 0.15
Partial fill QW insulation with internal plasterboard on plaster dabs.
Inner leaf Conductivity (W/m 2K)
Dense block 1.33
Others 0.45
Others 0.3
Quinn Lite
0.19 0.17 0.12
thickness (mm)
50 60 65 70 75 80
100 110
0.30 0.29 0.26 0.25 0.25 0.24 0.23 0.23 0.22 0.22 0.21 0.21 0.18 0.17 0.16 0.16
U-value (W/m 2K)
0.28 0.27 0.26 0.25 0.25 0.24 0.24 0.23 0.23 0.23 0.22 0.22 0.22 0.22 0.21 0.21 0.21 0.20 0.20 0.20 0.20 0.20 0.20 0.19 0.17 0.17 0.17 0.16 0.16 0.15 0.15 0.15
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