| Value | Category | Cases | |
|---|---|---|---|
| 1 | Metal | 892 | 
                                    
                                    74.3%
                                 | 
| 2 | Tiles | 66 | 
                                    
                                    5.5%
                                 | 
| 3 | Shingles | 5 | 
                                    
                                    0.4%
                                 | 
| 4 | Thatch | 79 | 
                                    
                                    6.6%
                                 | 
| 5 | Plastic sheets | 1 | 
                                    
                                    0.1%
                                 | 
| 6 | Asbestos | 33 | 
                                    
                                    2.8%
                                 | 
| 7 | Multiple materials | 19 | 
                                    
                                    1.6%
                                 | 
| 8 | Could not tell | 1 | 
                                    
                                    0.1%
                                 | 
| 99 | Missing data | 104 | 
                                    
                                    8.7%
                                 |