| Value | Category | Cases | |
|---|---|---|---|
| 1 | slate | 3147 |
67.8%
|
| 2 | metal sheeting | 217 |
4.7%
|
| 3 | thatch | 31 |
0.7%
|
| 4 | tiles | 9 |
0.2%
|
| 5 | mud | 536 |
11.5%
|
| 6 | bitumised concrete slab | 695 |
15%
|
| 7 | other | 9 |
0.2%
|