When installing bird mesh to protect solar panels or prevent birds from nesting under them, one of the primary concerns is the potential for rusting, especially on Colorbond roofs or solar panels. Choosing the right materials is essential to avoid long-term damage, and PVC-coated stainless steel bird mesh stands out as one of the best options. Here’s why it won’t cause rust or reaction problems, and what can go wrong if the installation is mishandled.

The Nature of Stainless Steel
Stainless steel, by its nature, is highly resistant to corrosion. Its composition includes chromium, which reacts with oxygen to form a protective layer on the surface. This makes it an ideal material for outdoor installations, as it can withstand the elements without rusting.

However, even stainless steel can corrode under certain conditions—particularly when exposed to saltwater or harsh chemicals. That’s where the PVC coating comes in.

The Protective PVC Coating
PVC (polyvinyl chloride) is a type of plastic that acts as a barrier between the stainless steel mesh and the environment. By coating the mesh with PVC, it provides an extra layer of protection against moisture, UV rays, and pollutants, all of which can accelerate rusting or other forms of deterioration.

The PVC coating prevents direct contact between the stainless steel mesh and the roof or solar panels, which is crucial for avoiding galvanic corrosion—a type of corrosion that occurs when two different metals are in direct contact with each other in the presence of an electrolyte (such as water).

Why Rusting Happens When Misused
VEXO Solarguard stainless steel is made from XXX grade, which has been scientifically tested for quality. However, if a lower-quality material mesh or an incorrectly installed mesh is used, rust can appear. Here are some common reasons rusting may occur:

1. Using Non-Coated Steel: If installers use bare steel mesh instead of stainless steel or non-coated mesh, it can rust quickly when exposed to the elements. Rainwater, especially in coastal areas with salty air, can cause the steel to oxidize, leading to rust patches that can spread over time.

2. Scratches on the Coating: During the installation process, if the PVC coating gets scratched or damaged, the exposed stainless steel may start to corrode. While stainless steel itself is corrosion-resistant, the additional protection provided by the PVC layer is necessary to ensure long-term durability.

3. Improper Installations Leading to Water Traps: Poor installation may create areas where water can pool or become trapped. Over time, standing water can accelerate rusting, even on stainless steel, especially if it’s combined with dirt or debris buildup, which retains moisture for extended periods.

4. Galvanic Corrosion from Mixed Metals: If the bird mesh is attached using the wrong type of fasteners, such as those made from steel or other reactive metals, galvanic corrosion can occur. The different metals will react with each other in the presence of moisture, causing one to corrode faster. Using compatible, high-quality materials like VEXO’s UV stabilised nylon clips will prevent this.

Why VEXO’s Solarguard PVC Coated Stainless Steel is Ideal for Solar Panel Mesh
– Non-Reactive with Colorbond Roofs: Colorbond roofs are designed to be durable and corrosion-resistant, but improper installations using reactive metals can cause issues. Since PVC-coated stainless steel bird mesh doesn’t react with the Colorbond material, it remains a safe, non-damaging option.

– Longevity: The combination of stainless steel and PVC means that the mesh will resist rusting and degradation for many years, even in harsh environments like coastal areas.

– Visual Appeal: A rusted mesh can stain surfaces, leading to unsightly streaks on roofs or solar panels. PVC-coated stainless steel mesh eliminates this risk, keeping both the roof and solar panels looking clean and well-maintained.

Key Tips for Proper Installation
– Always choose high-quality PVC-coated stainless steel mesh to ensure no corrosion over time.
– Ensure that the mesh is installed carefully, avoiding scratches or damage to the coating.
– Use UV stabilised nylon fasteners to prevent galvanic corrosion.
– Regularly inspect the installation to ensure no debris or water buildup around the mesh.

VEXO’s Solarguard PVC-coated stainless steel bird mesh and nylon clips are an excellent solution for protecting solar panels and roofs from bird damage without the risk of rust or corrosion. When installed correctly with the right materials, it provides long-lasting protection that won’t damage your roof or panels. However, cutting corners with lower-quality materials or poor installation practices can lead to rust issues, so always ensure a professional installation for the best results.