The gap between your solar panels and your roof is the perfect nesting spot for rats, squirrels, and birds. Once they’re in, they chew wiring, drag debris, and create repeat service problems that are expensive to diagnose. Critter guard screening stops them before it starts.
Overview
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The main goal is preventing rodents from reaching the wiring, connectors, and optimizers underneath your panels. One chewed wire can knock out an entire string.
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Proactive screening is a one-time install. Without it, rodent damage becomes a recurring problem — each service call costing more than the screening would have.
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A clean, sealed array perimeter keeps debris, nesting material, and moisture from accumulating underneath — protecting both production and roof condition.
We inspect underneath the array for droppings, nesting material, chewed wire insulation, and corroded connectors — signs that rodents have already moved in. The gap between your panels and roof (typically 4–8 inches) determines the mesh width needed. If panels need to come up for cleaning or wire repair, that happens before the guard goes on.
PVC-coated galvanized steel mesh (1/2” × 1” spacing) gets bent into an L-channel or C-channel shape for rigidity and clips directly to the mounting rails — never screwed into panel frames, which voids the manufacturer warranty. Corners are bent continuous with slit flanges, not patched. Penetrations around conduit get cut and stitched with hog rings. The goal is zero gaps larger than half an inch around the entire perimeter.
All nesting material, droppings, and accumulated debris are cleaned out before the mesh seals the perimeter. Every linear foot of screening is checked for secure attachment and gap-free coverage. A typical residential array runs 60–100 linear feet of perimeter — any opening along that line defeats the purpose.
The goal is a clearer recommendation, a cleaner plan, and the right conversation first.