| Thickness (mm) | Overall thermal transmittance (W/m2∙K) | Thermal resistance | |
| (m2∙K/W) | (ft2˚Fhr/Btu) | ||
| 10 | 1.12 | 0.89 | 5.10 |
| 20 | 0.55 | 1.82 | 10.3 |
| 30 | 0.45 | 2.22 | 12.6 |
| 40 | 0.32 | 3.13 | 17.8 |
| 50 | 0.27 | 3.70 | 21.0 |
| 60 | 0.22 | 4.55 | 25.8 |
| 80 | 0.19 | 5.26 | 29.9 |
| 100 | 0.14 | 7.14 | 40.5 |