Many property owners believe that fencing wire is the main reason for rust. In reality, rust almost always begins at fence joints, not the wire itself. Even high-quality galvanized or PVC-coated fencing can fail early if the joints are poorly designed or installed.

Understanding why rust starts from fence joints helps landowners, industries, and farmers avoid costly repairs and extend fence life beyond 20 years.

Understanding Fence Components

A fence system consists of multiple connected parts, and joints are the most vulnerable points.

Why Rust Starts from Fence Joints

1. Protective Coating Gets Damaged

When joints are created by cutting, drilling, or welding, the protective zinc or PVC layer is removed. Exposed steel reacts with moisture and oxygen, causing rust.

2. Water Accumulation at Joints

Joints act as water traps, especially during monsoon. Moisture stays longer at joints than on open wire surfaces.

3. Heat Affected Zones from Welding

Welding changes the metal structure, weakening corrosion resistance near joints.

4. Use of Mixed Metals

Using non-galvanized bolts or clamps with galvanized wire creates galvanic corrosion, accelerating rust at joints.

Rust Formation Process at Joints

Environmental Factors That Speed Up Joint Rust

Common Installation Mistakes

How to Prevent Rust at Fence Joints

Professional Installation Makes the Difference

At APG Fencing Services, we focus on joint-level protection, not just wire quality. Our fencing solutions include:

• Anti-rust treated joints

• Proper drainage alignment

• High-grade fasteners

• Weather-resistant coatings

This approach significantly increases fence lifespan and reduces maintenance costs.

Conclusion

If your fence is rusting early, the problem is rarely the wire. Fence joints are the weakest link when ignored. Proper design, materials, and professional installation can prevent rust from starting at joints and save money in the long run.