| Value | Category | Cases | |
|---|---|---|---|
| 1 | Metal, aluminum, tin or zinc | 995 |
82.9%
|
| 2 | Tiles | 24 |
2%
|
| 3 | Shingles | 2 |
0.2%
|
| 4 | Thatch or grass | 137 |
11.4%
|
| 5 | Plastic sheets | 7 |
0.6%
|
| 6 | Asbestos | 11 |
0.9%
|
| 7 | Multiple materials | 0 |
0%
|
| 8 | Concrete | 22 |
1.8%
|
| 9 | Some other material | 2 |
0.2%
|
| 10 | Could not tell / could not see | 0 |
0%
|