| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 6 |
0.3%
|
| 1 | Metal, tin or zinc | 1918 |
79.9%
|
| 2 | Tiles | 28 |
1.2%
|
| 3 | Shingles | 77 |
3.2%
|
| 4 | Thatch or grass | 250 |
10.4%
|
| 5 | Plastic sheets | 4 |
0.2%
|
| 6 | Asbestos | 41 |
1.7%
|
| 7 | Multiple materials | 11 |
0.5%
|
| 8 | Concrete | 38 |
1.6%
|
| 9 | Some other material | 26 |
1.1%
|
| 10 | Could not tell / could not see | 1 |
0%
|