| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Metal, tin or zinc | 500 |
41.7%
|
| 2 | Tiles | 3 |
0.3%
|
| 3 | Shingles | 3 |
0.3%
|
| 4 | Thatch or grass | 234 |
19.5%
|
| 5 | Plastic sheets | 10 |
0.8%
|
| 6 | Asbestos | 247 |
20.6%
|
| 7 | Multiple materials | 98 |
8.2%
|
| 8 | Some other material | 103 |
8.6%
|
| 9 | Could not tell/could not see | 2 |
0.2%
|