Maintaining Your Galvanised or PVC Coated Chain Wire Fence

A galvanised or PVC coated chain wire fence is one of the most practical and long-lasting security solutions for homes, businesses, sports facilities, and industrial properties. Its woven diamond pattern delivers strength without unnecessary bulk, and when properly protected with galvanisation or PVC coating, the fence can withstand decades of weather exposure. But like any structure, its longevity depends heavily on proper maintenance. A fence left neglected can sag, rust, or weaken over time, reducing its security and costing far more to repair than to maintain.

This comprehensive guide explores everything you need to know about maintaining your galvanised or PVC coated chain wire fence. From inspections and cleaning routines to vegetation control and long-term protection, these steps will help you keep your fence performing at its best for years to come.

Why Maintenance Matters

Galvanisation involves coating the wire in zinc, while PVC adds an additional plastic layer. Both protect steel from rust, but neither are completely immune to damage. Small scratches, impact from lawn equipment, or climbing plants can expose bare metal. In coastal regions, salt-laden air accelerates corrosion, and in industrial areas, pollutants can attack coatings. By maintaining the fence, you protect not only its appearance but also its strength and security.

A well-maintained fence saves money. Replacing entire sections is far more expensive than patching small areas of damage. Regular upkeep also preserves the fence’s appearance, which is especially important around homes, schools, and commercial properties where first impressions matter.

Understanding Galvanised vs PVC Coated Fencing

Before diving into maintenance techniques, it helps to understand the two main protective options. Galvanised chain wire is dipped or coated in zinc, creating a protective layer that resists corrosion. Over time, zinc can slowly oxidise, forming a protective patina that helps delay rust. However, if the zinc layer is damaged, rust can spread quickly at exposed points.

PVC coated chain wire, on the other hand, is galvanised wire wrapped in a layer of coloured plastic. Green and black are common choices, allowing the fence to blend into its surroundings. The PVC adds extra weather resistance and protects against scratches, but it too can crack or peel over time. Once PVC separates from the steel beneath, moisture can creep in and cause corrosion that is hidden from view until it becomes serious.

Understanding these differences will guide your maintenance. Galvanised fences need more vigilance for exposed rust, while PVC coated fences need careful inspection of the outer layer.

Regular Inspections

Inspection is the foundation of good fence maintenance. At least once every three months, walk the entire fence line. Pay attention to:

• Loose or missing ties that secure the mesh to the posts.
• Posts leaning out of alignment due to soil movement or impact.
• Scratches, chips, or peeling areas in the galvanised or PVC surface.
• Rust spots forming around joints, ties, or ground contact points.
• Sagging mesh caused by tension loss in the line wires.

In high-risk environments such as coastal areas or busy industrial yards, monthly inspections are recommended. Early detection of small problems prevents them from spreading into larger structural failures.

Cleaning the Fence

Over time, dirt, dust, cobwebs, and plant matter can build up on chain wire, reducing its appearance and even trapping moisture against the coating. Cleaning is simple but effective.

• Mix a mild detergent with warm water in a bucket. A few drops of dishwashing liquid usually suffice.
• Use a soft brush or sponge to scrub the wires, focusing on joints and lower sections where mud tends to accumulate.
• Rinse thoroughly with a garden hose. High-pressure washers should be used cautiously as they can strip PVC coating if held too close.

Avoid harsh chemicals such as bleach or solvents, as these can degrade both galvanised and PVC coatings. For fences near roads or the sea, wash more frequently to remove salt and pollutants that can accelerate corrosion.

Managing Rust on Galvanised Wire

Even galvanised coatings can eventually succumb to rust if scratched or exposed to moisture long enough. Rust spreads quickly, so addressing it early is critical.

• Scrub affected areas with a wire brush until bare metal is visible.
• Wipe clean and dry completely.
• Apply a rust converter or inhibitor, which chemically halts corrosion and primes the surface.
• Touch up with a zinc-rich galvanising spray or cold galvanising paint to restore the protective layer.

This process should be repeated as soon as rust appears. Leaving even a small patch untreated risks it spreading under the coating, weakening the fence.

Addressing Damage to PVC Coatings

For PVC coated fences, the priority is maintaining the integrity of the plastic sheath. Cracks, peeling, or punctures can let moisture in. Inspect closely along bends, gate sections, and tension points where coatings are more likely to fail.

• For small scratches, apply a vinyl repair paint or protective sealant designed for outdoor plastics.
• For peeling sections, trim away loose fragments and seal the edges to stop water penetration.
• If the damage exposes large areas of steel, consider replacing that panel or wire length before corrosion develops unseen beneath the PVC.

Repairing Structural Damage

Structural integrity is crucial for security. If wires snap, posts bend, or rails shift, repair them promptly.

• Tighten loose wires by reattaching them with pliers and new tie wires where necessary.
• Straighten leaning posts by resetting them in fresh concrete or stabilising with bracing.
• Replace broken or severely bent mesh sections. This prevents gaps that compromise security.
• Check tension wires and ratchets, tightening as needed to keep the fence taut.

Always prioritise repairing gates, as these are the most frequently used sections and most prone to wear.

Vegetation Control

Plants growing into chain wire fencing may look charming, but they can cause serious long-term damage. Vines and creepers trap moisture, promote rust, and add weight that stresses posts.

• Trim back shrubs and grasses that lean against the fence line.
• Discourage climbing vines from attaching, or provide a separate trellis nearby.
• Remove fallen branches promptly, as impact can bend posts or puncture coatings.

If you want greenery on your fence, consider planter boxes set a short distance away so plants climb supports rather than the chain wire itself.

Gate and Moving Part Maintenance

Gates are the hardest working part of a chain wire fence. Hinges, latches, and rollers require regular lubrication to prevent squeaks and rust. Use a silicone spray or light machine oil rather than heavy grease, which can attract dirt. Check gate alignment—if it drags on the ground, adjust hinges or posts before wear worsens. Ensure latches engage smoothly, and replace padlocks or chains if corroded.

Seasonal Maintenance

Different weather conditions place different stresses on chain wire fences. A seasonal approach keeps you ahead of potential damage.

• Summer: Heat can cause expansion in wires, so recheck tension. Clear dry vegetation to reduce fire hazards near the fence line.
• Autumn: Remove fallen leaves that trap moisture. Inspect for rust after heavy rains.
• Winter: In colder regions, ice expansion can damage coatings—inspect more frequently.
• Spring: Rapid plant growth means extra trimming. Apply protective sprays before the storm season.

In coastal regions, rinse the fence with fresh water monthly to remove salt deposits. In industrial areas, wash away dust and pollutants more often.

Safety During Maintenance

Maintaining a fence involves tools and sometimes chemicals. Wear gloves to avoid cuts from wire ends. Safety glasses protect against rust flakes or cleaning sprays. When using ladders, ensure stable footing. If welding or cutting is required, leave it to trained professionals who have the correct protective equipment and experience.

Long-Term Protection and Upgrades

Over the years, coatings wear down no matter how carefully you maintain them. Plan for long-term upgrades:

• Apply protective sprays such as zinc-rich coatings to extend galvanised life.
• Repaint PVC coated fences with suitable exterior paints when colour fades or coating thins.
• Replace heavily corroded sections instead of patching repeatedly, as this restores overall strength.
• Consider upgrading fittings, latches, and posts to newer, more durable options as they become available.

Annual Checklist

To keep tasks manageable, use a yearly maintenance schedule:

• Quarterly: Inspect entire fence line, check coatings, clear vegetation.
• Twice yearly: Wash down fence thoroughly, lubricate gates.
• Yearly: Address rust, replace worn fittings, repaint or recoat small sections.

A galvanised or PVC coated chain wire fence is designed to last, but only if cared for. With regular inspections, cleaning, rust management, and attention to coatings, your fence can provide decades of reliable service. Treat it as an essential part of your property’s security system, and the effort you invest in maintenance will be rewarded with durability, appearance, and peace of mind.