With a range of thicknesses and thermal values available, Gerard Thermacore™ has options that far exceed New Zealand building code requirements, should you wish.
| Thickness mm | R-Value |
| 50 | 2.27 |
| 60 | 2.73 |
| 70 | 3.18 |
| 80 | 3.64 |
| 90 | 4.05 |
| 100 | 4.55 |
| 110 | 5.00 |
| 120 | 5.45 |
| 140 | 6.36 |
| 150 | 6.82 |
| 160 | 7.27 |
| 180 | 8.18 |
| 200 | 9.09 |