| Material | Size | Thickness | Density |
|---|---|---|---|
| 500*500/1000*1000mm | 20mm | 16.8kg/m2 | |
| 15%EPDM (cover) | 500*500/1000*1000mm | 25mm | 20.4kg/m2 |
| + | 500*500/1000*1000mm | 30mm | 24.4kg/m2 |
| Black rubber bead | 500*500/1000*1000mm | 35mm | 28kg/m2 |
| (below) | 500*500/1000*1000mm | 40mm | 32.8kg/m2 |
| 500*500/1000*1000mm | 50mm | 40kg/m2 |
