| 1 | Product grade and intended use | Confirm the OSB type and intended service conditions. Under EN 300, OSB/1 and OSB/2 are for non-load-bearing and load-bearing use in dry conditions; OSB/3 and OSB/4 are for load-bearing use in humid conditions. Humid-condition grades are not waterproof. | Product datasheet, declared grade, applicable test reports, and written confirmation of intended use. | 15% |
| 2 | Standards and market documentation | Check that the stated standard and documentation match the product, intended application, and destination-market requirements. EN 300 specifies OSB product requirements; additional construction-product documentation may apply in some markets. | Current test reports, declarations or conformity documents where applicable, and document-to-product traceability. | 12% |
| 3 | Consistency between batches | Assess whether thickness, dimensions, squareness, surface condition, and mechanical properties stay within the agreed specification across production lots. | Recent batch inspection records, test results, written tolerances, and a pre-shipment inspection plan. | 12% |
| 4 | Independent testing | Confirm that test methods and results are relevant to the ordered grade and specifications. Where independent testing is required, check the laboratory’s competence and scope for the relevant tests. | Complete reports identifying the tested product, test methods, results, test date, and laboratory. Check relevant accreditation where required. | 10% |
| 5 | Adhesive and emissions requirements | State the required adhesive or resin characteristics and any emissions limits that apply to the destination, product, and use. Do not assume one emissions claim or test applies to every market. | Product-specific declarations and test reports against the buyer’s specified methods and destination-market requirements. | 10% |
| 6 | Production capacity and lead time | Check whether the supplier can meet the required order volume, product mix, and delivery schedule without compromising agreed quality controls. | A written production schedule, capacity confirmation for the requested specifications, and updates on order milestones. | 10% |
| 7 | Product range and customization | Confirm available thicknesses, panel dimensions, edge profiles, and other requested options. Verify that non-standard specifications are technically feasible and included in the order contract. | Current specification sheets, approved samples, drawings where relevant, and a signed order specification. | 8% |
| 8 | Packaging and export handling | Review protection against moisture, edge damage, and handling during storage and transport. Agree packaging and container-loading details for the route and delivery terms. | Packaging specification, loading plan, shipment photographs, and agreed marking and shipping documents. | 8% |
| 9 | Traceability and responsible sourcing | Check whether production lots can be traced and whether any requested forestry or chain-of-custody claims are supported by valid, applicable documentation. | Lot identification procedure and, if required, current certificates with scope and chain-of-custody details verified with the issuing scheme. | 7% |
| 10 | Commercial terms and after-sales support | Compare quotations on the same product specification and delivery basis. Clarify payment terms, claims handling, replacement or remedy procedures, and communication responsibilities. | Itemized quotation, draft contract, written claims process, and named points of contact. | 8% |