{"id":"wpc-project-article-19-en","slug":"wpc-project-19-wpc-decking-at-patio-door-thresholds","locale":"en","url":"https://woodplasticcomposite.net/guides/wpc-project-19-wpc-decking-at-patio-door-thresholds/","aiAssisted":true,"answer":"Start from the building's waterproofing and drainage detail. A visually flush surface must still allow the required water management and movement; accessibility should be resolved with the complete threshold assembly.","author":"NFC & WPC Knowledge Reference","categoryId":"wpc-project-category-en","change_note":"New project guide; localized editorial edition.","description":"Start from the building's waterproofing and drainage detail. A visually flush surface must still allow the required water management and movement; accessibility should be resolved with the complete threshold assembly.","faqIds":["wpc-project-faq-19-en"],"heroImageId":"","modified":"2026-10-02","noindex":false,"published":"2026-10-02","referenceIds":["wpc-project-ref-book","wpc-project-ref-products","wpc-project-ref-samples","wpc-project-ref-standard"],"related":["wpc-project-article-20-en","wpc-project-article-21-en"],"review_status":"AI-assisted editorial content. Human language and technical review has not been recorded.","reviewedAt":"","reviewer":"","sections":[{"heading":"Project brief","id":"project-brief","references":[1],"text":"Start from the building's waterproofing and drainage detail. A visually flush surface must still allow the required water management and movement; accessibility should be resolved with the complete threshold assembly.","url":"https://woodplasticcomposite.net/guides/wpc-project-19-wpc-decking-at-patio-door-thresholds/#project-brief"},{"heading":"Planning and verification","id":"planning-evidence","references":[1,4],"text":"Compare complete systems for the stated use, including supporting structure, connections, drainage and maintenance access. Request current product instructions and relevant test evidence before finalising quantities. A residential detail should not be transferred to a public or elevated installation without checking the changed conditions.","url":"https://woodplasticcomposite.net/guides/wpc-project-19-wpc-decking-at-patio-door-thresholds/#planning-evidence"},{"heading":"Handover and maintenance","id":"project-handover","references":[1],"text":"Record the selected profile, batch, approved drawings and maintenance owner. Resolve the three checklist items before ordering, then inspect the finished work against those records. Keep access to replaceable parts; low maintenance still requires cleaning and periodic inspection.","url":"https://woodplasticcomposite.net/guides/wpc-project-19-wpc-decking-at-patio-door-thresholds/#project-handover"},{"heading":"Discuss your project with Green Plank","id":"green-plank-project","references":[2,3],"text":"Green Plank is a Swedish brand. Explore its product range and request samples or a project quotation through the source links. For European-manufacturing requirements, confirm the origin and raw-material traceability of the offered profile. Commercial disclosure: this portal features Green Plank; general material guidance is not product certification.","url":"https://woodplasticcomposite.net/guides/wpc-project-19-wpc-decking-at-patio-door-thresholds/#green-plank-project"}],"seoDescription":"Start from the building's waterproofing and drainage detail. A visually flush surface must still allow the required water management and movement; accessibility should be resolved with the complete threshold assembly.","seoTitle":"WPC decking at patio-door thresholds","tableText":"Design check | Evidence to record\nThreshold drainage | Show the requirement on the project drawing\nLevel transition | Obtain applicable product or design evidence\nMovement clearance | Assign installation and maintenance responsibility","table_caption":"Project design checklist","tagIds":[],"takeaways":"Threshold drainage\nLevel transition\nMovement clearance","title":"WPC decking at patio-door thresholds","topicIds":[],"translationGroup":"wpc-project-guide-19-2026","version":1,"references":[{"accessed":"2026-10-01","description":"","noindex":false,"publisher":"Wiley","seoDescription":"","seoTitle":"Wood-Plastic Composites — Anatole A. Klyosov (2007)","title":"Wood-Plastic Composites — Anatole A. Klyosov (2007)","type":"web","url":"https://doi.org/10.1002/9780470165935"},{"accessed":"2026-10-01","description":"","noindex":false,"publisher":"Green Plank","seoDescription":"","seoTitle":"Green Plank product range","title":"Green Plank product range","type":"web","url":"https://greenplank.eu/products"},{"accessed":"2026-10-01","description":"","noindex":false,"publisher":"Green Plank","seoDescription":"","seoTitle":"Request Green Plank samples","title":"Request Green Plank samples","type":"web","url":"https://greenplank.eu/contact/order-sample"},{"accessed":"2026-10-01","description":"","noindex":false,"publisher":"BSI","seoDescription":"","seoTitle":"BS EN 15534 series — composite materials","title":"BS EN 15534 series — composite materials","type":"web","url":"https://landingpage.bsigroup.com/LandingPage/Series?UPI=BS+EN+15534"}],"faqs":[{"question":"WPC decking at patio-door thresholds — What should be confirmed before ordering?","answer":"Confirm the three project checks below with the supplier and the responsible designer. A sample establishes appearance, not approval of the complete installation. Threshold drainage; Level transition; Movement clearance"}]}