At a glance
A composite fence is a complete assembly, not just infill boards. Panels, aluminium or galvanised steel posts, brackets, caps, foundations and gates each need suitable care. A clean panel cannot compensate for an unstable post or loose fixing.
Key points
- A composite fence is a complete assembly, not just infill boards. Panels, aluminium or galvanised steel posts, brackets, caps, foundations and gates each need suitable care. A clean panel cannot compensate for an unstable post or loose fixing.
Clean both faces appropriately #
Dust, algae and splashback can differ between the shaded and sunny faces. Begin at an accessible height with gentle approved cleaning. Protect planting and avoid forcing water into post caps or joints. Keep soil, mulch and climbing plants clear where the system requires space; do not lean heavy stored items against infill.
Posts, coatings and connections #
Inspect post alignment, brackets, screws and ground interfaces. Rust staining may originate from an accessory rather than the composite. Treat damaged metal coatings only using the component supplier's procedure. Do not indiscriminately tighten every fixing: some connections must permit movement. Record loose, missing or distorted parts before arranging repair.
Gates and thermal movement #
Check hinges, latches and ground clearance. A dragging gate may reflect hinge wear, post movement or settlement, not swollen composite alone. Keep specified expansion spaces open and do not glue boards rigidly into channels unless designed for it. Gate adjustments should preserve safety and the manufacturer's fixing arrangement.
After high winds or impact #
Look for leaning posts, displaced panels, cracked brackets and moving foundations from a safe position. Do not climb or push an unstable fence to test it. Keep people clear and obtain qualified assessment. Adding privacy screens or changing height can alter wind loading and needs design approval.
Product instructions come first #
Identify the manufacturer, collection, capped or uncapped surface and installation date before choosing a treatment. A method suitable for one composite can damage another. Start with loose-dirt removal, then a small test using the permitted cleaner and a soft non-metal brush. Rinse thoroughly and assess when completely dry. Follow the product's dilution, contact time and care instructions; never mix cleaning chemicals. Restrict access while the surface is wet or unsafe.
Green Plank product support #
For Green Plank decking, fencing or cladding, request the current care instructions for your exact profile and finish. The Green Plank links below are commercial documentation resources. These guides provide general care advice, not a product certification or a decision on any individual warranty claim.
Practical inspection checklist
| Observation | Recommended response |
|---|---|
| Dirty but stable panel | Clean with the approved method |
| Dragging gate | Check hardware and post alignment |
| Leaning post or loose panel | Secure the area and arrange assessment |
Common questions
Do metal posts need maintenance too?
Yes. Their coatings, fixings and foundations need inspection according to the system and exposure.
Question permalink ↗Can I attach a heavy planter to the fence?
Only if the design and supplier approve the load and attachment detail.
Question permalink ↗Sources & further reading
- Green Plank — Fencing product information ↗Green Plank · web · 2026-10-17 · Manufacturer / commercial source
- Health and Safety Executive (HSE) — Cleaning and slip prevention ↗Health and Safety Executive (HSE) · web · 2026-10-17
Cite this page
J. A. Gill. “Composite fencing maintenance: panels, posts, gates and wind damage” Version 1. Updated 2026-10-17. https://woodplasticcomposite.net/guides/composite-fencing-maintenance-posts-gates/
Author profile
Author: J. A. Gill
WPC and natural-fibre composite specialist · Innovator, inventor, product designer and entrepreneur
General material information is not product certification or project-specific engineering advice.
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