Squirrels chew. They chew constantly because their incisors never stop growing, and a wire bundle in an attic is exactly the kind of soft, persistent material that calls to a squirrel. The result is the single most underrated fire risk in a North Alabama home with attic squirrels.
The short answer
If you have squirrels in the attic and you've noticed chewed wires:
- Cut power to the affected circuit if you can identify it. If you can't, leave the breakers alone but turn off any visibly damaged appliance circuits.
- Do not try to repair the wiring yourself. Damaged insulation around energized conductors is a fire risk and a shock risk.
- Get the squirrels out before doing any work in the attic. Stressed squirrels will run and chew more.
- Have a licensed electrician inspect any chewed wiring after the squirrels are removed.
- Then seal the entry points permanently so it can't happen again.
Why squirrels chew wires
Two reasons. First, squirrel incisors grow continuously and require constant wearing-down — wires, wood, plastic, soft metals all serve. Second, wires often run along the natural travel paths squirrels use in attics (rafters, joist tops), so they're encountered constantly.
The damage pattern is distinctive: insulation stripped in short sections (1–4 inches), often in multiple places along a wire run, with copper conductor exposed. You'll see the stripped pieces as small confetti-like debris.
The fire risk
Exposed conductors against wood framing, near insulation, or arcing against a metal HVAC duct can ignite. National fire-investigation statistics consistently identify rodent-chewed wiring as a significant cause of unexplained electrical fires — and squirrels are right at the top of the list of culprits in residential attics.
The risk doesn't go away when the squirrels do. Damaged wiring left in place continues to be a fire risk indefinitely. This is why electrician inspection after the squirrel work is essential, not optional.
What we do on a chewed-wiring squirrel job
- Inspection. Identify entry points, locate the squirrels' travel paths, and photograph wire damage for insurance documentation.
- Removal. Live trap or one-way exclusion device depending on entry geometry. We confirm every animal is out before sealing — sealing with squirrels still inside guarantees frantic chewing as they look for a way out.
- Seal. Hardware cloth (1/4") and metal flashing at every entry. Foam alone fails — squirrels chew right through it.
- Coordinate. We work with your electrician (or recommend one) to ensure damaged wiring is inspected and repaired safely.
- Document. Photo record of damage, scope, and final state for homeowner's insurance if a claim is being filed. See our insurance claim guide.
Will insurance cover the wire damage?
Often, yes. Squirrel damage is a gray area — some carriers treat squirrels as wildlife (covered), others as vermin (not covered). The damage-and-repair side (chewed wiring, ruined insulation, structural soffit damage) is more commonly covered than the cost of removing the live animal. Document thoroughly.
Prevention after the fact
Permanent sealing is the only real prevention. Trim tree branches at least 8–10 feet back from the roofline so squirrels can't get on the roof easily. Inspect ridge caps, gable vents, soffit-fascia transitions, and chimney flashing annually. See our squirrel prevention guide for the full prevention checklist.
If you're hearing daytime scratching and you live anywhere from Huntsville to Madison to Hartselle, don't wait for a fire to take it seriously. Call us.
