| SAMPLE | COMMON NAME |
| Sample 1 | Coated Aluminum Roofing Sheet |
| Sample 2 | Uncoated Aluminum Roofing Sheet |
| Sample 3 | Coated Chequered Aluminum Plate |
| Sample 4 | Uncoated Chequered Aluminum Plate |
| Sample 5 | Aluminum/Zinc Alloy (Cameroon Roofing Sheet) |
| Sample 6 | Galvanized Steel Sheet (Nigerian Roofing Sheet) |