| Value | Category | Cases | |
|---|---|---|---|
| 1 | Metal, aluminum, tin or zinc | 169 | 
                                    
                                    14.1%
                                 | 
| 2 | Tiles | 9 | 
                                    
                                    0.8%
                                 | 
| 3 | Shingles | 22 | 
                                    
                                    1.8%
                                 | 
| 4 | Thatch or grass | 327 | 
                                    
                                    27.3%
                                 | 
| 5 | Plastic sheets | 40 | 
                                    
                                    3.3%
                                 | 
| 6 | Asbestos | 18 | 
                                    
                                    1.5%
                                 | 
| 7 | Multiple materials | 387 | 
                                    
                                    32.3%
                                 | 
| 8 | Concrete | 12 | 
                                    
                                    1%
                                 | 
| 9 | Some other material | 214 | 
                                    
                                    17.8%
                                 | 
| 10 | Could not tell / could not see | 2 | 
                                    
                                    0.2%
                                 |