Can Squirrels or Rats Chew Through the Solar Panel Mesh? How to Reinforce It?

As rooftop solar panels become increasingly popular, homeowners are discovering a hidden challenge—pest damage. Birds, squirrels, and rats often find the gap beneath solar panels to be an attractive nesting or hiding spot. To prevent this, many installers use solar panel mesh (also called critter guards or bird mesh) to block animals from getting underneath the panels.

But a common concern arises: Can squirrels or rats chew through the solar panel mesh? And if so, how can you reinforce it?

Can Squirrels or Rats Chew Through Solar Panel Mesh?

The short answer: It depends on the material.

· Plastic or PVC Mesh: Easily chewed through by squirrels and rats, making it unsuitable for long-term protection.

· Low-Grade Metal Mesh: Thin or poorly coated wire mesh may bend, corrode, or eventually break under persistent gnawing.

· Stainless Steel Mesh: High-quality stainless-steel wire mesh is extremely resistant to chewing and corrosion, providing the most reliable protection against rodents and birds.

Squirrels and rats have strong teeth that grow continuously, meaning they will instinctively gnaw on objects. If the mesh material is not durable enough, they can eventually damage it and access the space under your panels.

Why Protect Your Solar Panels with Mesh?

1. Prevents Nesting and Chewing – Pests may build nests, chew wires, or damage insulation.

2. Avoids Fire Hazards – Exposed cables caused by chewing can create short circuits.

3. Improves Panel Efficiency – Debris and droppings beneath panels can block airflow, reducing cooling efficiency.

4. Minimizes Maintenance Costs – Preventing damage reduces long-term repair expenses.

How to Reinforce Solar Panel Mesh Effectively

1. Choose the Right Material

.Use UV-resistant stainless-steel mesh with small openings (usually ½ inch or less).

.Avoid plastic mesh or galvanized steel that can rust over time.

2. Secure with Proper Fasteners

.Use solar panel clips or stainless-steel fasteners instead of adhesives or zip ties, which degrade in the sun.

 .Ensure the mesh is tightly fitted with no gaps.

3. Double Protection for Vulnerable Areas

.Reinforce corners and edges, where rodents are more likely to attempt entry.

.Apply extra mesh layers or angle the mesh outward to make chewing more difficult.

4. Routine Inspection

.Check your mesh at least twice a year, especially after stormy weather.

.Look for signs of chewing, gaps, or loose fasteners.

5. Additional Deterrents

.Some homeowners install ultrasonic repellents or use non-toxic rodent repellents near solar pv rooftop systems for added protection.

Final Thoughts

So, can squirrels or rats chew through solar panel mesh? Yes, if the mesh is made of weak materials like plastic or low-grade metal. But by using high-quality stainless-steel mesh and securing it properly, you can effectively reinforce your system and protect your solar investment from costly pest damage.

A small upgrade in material and installation quality can save you from thousands in future repairs—making strong mesh reinforcement a must-have for every solar system owner.