| Insulation materials | k (W/m∙K) | Cost ($/m3) |
| Extruded polystyrene (XPS) | 0.031 | 79 |
| Expanded polystyrene (EPS) | 0.039 | 53 |
| Glass wool (GW) | 0.04 | 27 |
| Polyurethane (PUR) | 0.024 | 118 |
| Polyisocyanurate (PIR) | 0.023 | 105 |