| Material | Thickness | Weight |
|---|---|---|
| (mm) | (kN/m 2) | |
| Roof tiles concrete | 30 | 0.72 |
| Softwood 25x50mm battens at 4m/sqm | 5 | 0.025 |
| Softwood Rafters at 400mm ctrs | 34 | 0.17 |
| Glass wool | 150 | 0.015 |
| Plasterboard (double 12.5mm) | 25 | 0.225 |
| Plaster | 6 | 0.066 |
| Totals | 250 | 1.221 |
| Material | Thickness | Weight |
|---|---|---|
| (mm) | (kN/m 2) | |
| Roof tiles concrete | 30 | 0.72 |
| Softwood 25x50mm battens at 4m/sqm | 5 | 0.025 |
| Softwood Rafters at 400mm ctrs | 34 | 0.17 |
| Glass wool | 150 | 0.015 |
| Plasterboard (double 12.5mm) | 25 | 0.225 |
| Plaster | 6 | 0.066 |
| Totals | 250 | 1.221 |
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