| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Metal, tin or zinc | 23 |
1.9%
|
| 2 | Tiles | 257 |
21.4%
|
| 3 | Shingles | 0 |
0%
|
| 4 | Thatch or grass | 1 |
0.1%
|
| 5 | Plastic sheets | 0 |
0%
|
| 6 | Asbestos | 4 |
0.3%
|
| 7 | Multiple materials | 26 |
2.2%
|
| 8 | Concrete | 855 |
71.3%
|
| 9 | Some other material | 22 |
1.8%
|
| 10 | Could not tell / could not see | 12 |
1%
|