| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Metal, aluminum, tin or zinc | 926 |
77.2%
|
| 2 | Tiles | 79 |
6.6%
|
| 3 | Shingles | 0 |
0%
|
| 4 | Thatch or grass | 53 |
4.4%
|
| 5 | Plastic sheets | 2 |
0.2%
|
| 6 | Asbestos | 0 |
0%
|
| 7 | Multiple materials | 7 |
0.6%
|
| 8 | Concrete | 115 |
9.6%
|
| 9 | Some other material | 17 |
1.4%
|
| 10 | Could not tell / could not see | 1 |
0.1%
|