| Value | Category | Cases | |
|---|---|---|---|
| 1 | Metal, aluminum, tin or zinc | 1910 |
79.6%
|
| 2 | Tiles | 23 |
1%
|
| 3 | Shingles | 160 |
6.7%
|
| 4 | Thatch or grass | 168 |
7%
|
| 5 | Plastic sheets | 3 |
0.1%
|
| 6 | Asbestos | 81 |
3.4%
|
| 7 | Multiple materials | 11 |
0.5%
|
| 8 | Concrete | 31 |
1.3%
|
| 9 | Some other material | 12 |
0.5%
|
| 10 | Could not tell / could not see | 1 |
0%
|