| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Metal, tin or zinc | 28 |
2.3%
|
| 2 | Tiles | 7 |
0.6%
|
| 3 | Shingles | 10 |
0.8%
|
| 4 | Thatch or grass | 0 |
0%
|
| 5 | Plastic sheets | 0 |
0%
|
| 6 | Asbestos | 1 |
0.1%
|
| 7 | Multiple materials | 38 |
3.2%
|
| 8 | Some other material | 1116 |
93%
|
| 9 | Could not tell/could not see | 0 |
0%
|