As solar energy systems become more common on rooftops, homeowners are learning that the space beneath their solar panels can be attractive not just to the sun—but also to small animals. Birds, squirrels, and rodents often find shelter under solar arrays, which can lead to serious damage. That’s where a critter guard comes in.

A critter guard for solar panels is a protective barrier, usually made of mesh or wire, installed around the perimeter of a rooftop solar array. Its primary purpose is to prevent animals from nesting or chewing on wires beneath the panels. Though often overlooked in the initial design phase, a critter guard plays a key role in maintaining system health, electrical safety, and roof integrity.

Why Are Critter Guards Important?

The space between a solar panel and the roof provides shade, warmth, and cover—ideal conditions for birds to build nests or for rodents to hide. Unfortunately, these animals can cause a range of problems:

• Chewed wires can lead to power loss, short circuits, or even fire hazards.

• Blocked airflow can reduce system efficiency and increase panel temperature.

• Bird droppings and nesting materials may accumulate, causing mess and corrosion.

• Roof damage can occur if animals dig into shingles or tiles to get underneath the panels.

Installing a critter guard acts as a simple but effective solution to all these issues.

Types of Critter Guards

Critter guards are typically made from galvanized steel mesh or stainless steel wire, chosen for their durability and resistance to rust. Some are powder-coated in black to blend in with the solar array aesthetically.

There are two common types:

• Mesh Roll Systems, which are trimmed and fastened to the panel edges using clips or brackets.

• Pre-formed Panels, which are more rigid and designed to snap into place for a secure fit.

Critter guards are usually non-invasive, meaning they don’t require drilling into the roof. Instead, they attach to the solar panel frames, preserving both waterproofing and warranty.

Integration with Mounting Systems

When planning a solar installation, especially in areas known for pest activity, it’s smart to consider how the critter guard will integrate with the mounting structure. Systems that leave enough space for clips or allow easy attachment of guards can save time and effort later on.

SIC Solar, a company specializing in the production and sale of solar mounting brackets and systems, provides versatile racking designs that support various add-ons like wire management and pest protection accessories. Their aluminum mounting systems are engineered to allow secure attachment of third-party products such as critter guards, ensuring the entire array remains safe and functional over time.

SIC Solar mounting components are corrosion-resistant and structurally sound, making them a reliable choice not just for supporting panels but also for accommodating protective features. When paired with proper mesh guards, their systems contribute to cleaner, safer, and longer-lasting rooftop solar installations.