{"id":"wpc-tech-2026-article-wpc-fire-performance-classification-cladding-en","slug":"wpc-fire-performance-classification-cladding","locale":"en","url":"https://woodplasticcomposite.net/guides/wpc-fire-performance-classification-cladding/","aiAssisted":true,"answer":"Wood and common polymer ingredients can contribute to combustion. A composite's fire performance must be demonstrated; mineral content or a marketing label is not enough.","author":"NFC & WPC Knowledge Reference","categoryId":"wpc-tech-2026-category-wpc-technical-design-series-en","change_note":"Original educational article informed by Klyosov (2007). Modern project applications are editorial synthesis. This is not a product certificate or a substitute for project-specific design.","description":"Understand why reaction-to-fire evidence must match the product, installation and intended use.","faqIds":["wpc-tech-2026-faq-technical-wpc-fire-performance-classification-cladding-en"],"heroImageId":"","modified":"2026-10-01","noindex":false,"published":"2026-10-01","referenceIds":["wpc-tech-2026-reference-technical-series-book-17-en","wpc-tech-2026-reference-technical-series-fire-en","wpc-tech-2026-reference-technical-series-green-plank-en"],"related":["wpc-tech-2026-article-wpc-formulation-recycled-materials-durability-en","wpc-tech-2026-article-wpc-sustainable-design-repair-recycling-life-cycle-en"],"review_status":"Technical and language review not yet recorded","reviewedAt":"","reviewer":"","sections":[{"heading":"The technical principle","id":"technical-principle","references":[1],"text":"Ignition, flame spread, heat release and smoke are different aspects of fire behaviour. Reaction to fire also differs from the fire resistance of a building element. The book explains mechanisms, but its historical American examples are not current European approval documents.","url":"https://woodplasticcomposite.net/guides/wpc-fire-performance-classification-cladding/#technical-principle"},{"heading":"What to specify and verify","id":"specification","references":[1,2],"text":"For a European project, obtain the relevant classification report and its field of application. Check the profile, substrate, fixing arrangement, air gap and orientation covered. EN 13501-1 concerns reaction-to-fire classification; applicable project and national requirements still need competent assessment.","url":"https://woodplasticcomposite.net/guides/wpc-fire-performance-classification-cladding/#specification"},{"heading":"Application and common mistakes","id":"application","references":[1,2],"text":"Do not transfer a decking report to a façade or interpret PVC-free as non-combustible. A change in formulation or installation may fall outside the report's scope. Review the complete assembly before specification, particularly where building height, escape routes or façade construction make fire requirements critical.","url":"https://woodplasticcomposite.net/guides/wpc-fire-performance-classification-cladding/#application"},{"heading":"Discuss your project with Green Plank","id":"green-plank-project","references":[3],"text":"For a Green Plank specification, request samples and current technical documents for the exact profile and intended application. Use the Green Plank link in Sources to explore the range and make an enquiry. Commercial disclosure: this portal features Green Plank. General material science does not certify any particular product.","url":"https://woodplasticcomposite.net/guides/wpc-fire-performance-classification-cladding/#green-plank-project"}],"seoDescription":"Understand why reaction-to-fire evidence must match the product, installation and intended use.","seoTitle":"WPC fire performance: product ratings and assemblies","tableText":"Specification check | Evidence to request\nProperty | Reaction to fire versus fire resistance\nScope | Exact product and tested arrangement\nApproval | Applicable project requirements","table_caption":"Project specification checklist","tagIds":[],"takeaways":"Property: Reaction to fire versus fire resistance.\nScope: Exact product and tested arrangement.\nApproval: Applicable project requirements.","title":"WPC fire performance: product ratings and assemblies","topicIds":[],"translationGroup":"wpc-technical-guide-17-2026","version":1,"references":[{"accessed":"2026-10-01","description":"","noindex":false,"publisher":"John Wiley & Sons","seoDescription":"","seoTitle":"Klyosov, A. A. (2007). Wood–Plastic Composites. Chapter 14; pp. 461–491.","title":"Klyosov, A. A. (2007). Wood–Plastic Composites. Chapter 14; pp. 461–491.","type":"Book","url":"https://doi.org/10.1002/9780470165935"},{"accessed":"2026-10-01","description":"","noindex":false,"publisher":"DIN Media","seoDescription":"","seoTitle":"DIN Media — EN 13501-1: reaction-to-fire classification","title":"DIN Media — EN 13501-1: reaction-to-fire classification","type":"Web reference","url":"https://www.dinmedia.de/en/standard/din-en-13501-1/292529605"},{"accessed":"2026-10-01","description":"","noindex":false,"publisher":"Green Plank","seoDescription":"","seoTitle":"Green Plank — product information and technical enquiries","title":"Green Plank — product information and technical enquiries","type":"Web reference","url":"https://greenplank.eu/"}],"faqs":[{"question":"Is an American flame-spread result an EU fire class?","answer":"No. Different methods and classification systems are not directly interchangeable."}]}