| Value | Category | Cases | |
|---|---|---|---|
| 1 | Metal, tin and zinc | 1504 |
68.4%
|
| 2 | Tiles | 13 |
0.6%
|
| 3 | Shingles | 2 |
0.1%
|
| 4 | Thatch | 633 |
28.8%
|
| 5 | Plastic sheets | 2 |
0.1%
|
| 6 | Asbestos | 1 |
0%
|
| 7 | Multiple materials | 40 |
1.8%
|
| 9 | Could not tell | 3 |
0.1%
|