Yes — grey squirrels can and do damage electrical wiring in loft spaces, and it's one of the more serious risks associated with a squirrel infestation rather than just a nuisance issue. We see this fairly regularly on callouts across Henley-on-Thames, particularly in loft spaces where cabling runs across joists at squirrel height.
Why Squirrels Gnaw on Wiring
A squirrel's front teeth grow continuously throughout its life, and gnawing on hard materials is a natural behaviour that keeps them worn down to a manageable length. Cables, timber, and even PVC pipework are all fair game, and a squirrel doesn't need any particular reason to start gnawing on a wire that happens to be within reach in its nesting area.
The Real Risk: Fire and Fault
- Exposed live wires in a loft space are a recognised fire risk, and squirrel damage is a known cause of electrical fires in domestic roof spaces
- Damaged cabling can also cause intermittent electrical faults that are hard to diagnose without knowing the cause
- Wiring for loft lighting, smoke alarms, satellite or aerial cabling, and sometimes consumer unit feeds can all be affected depending on how the loft is wired
- Damage isn't always obvious from below — it's usually only found during a loft inspection
Signs Your Wiring May Have Been Affected
Look out for cables with the outer insulation stripped away or bite marks visible along their length, flickering lights or intermittent electrical faults with no obvious cause, a burning smell near the loft hatch, or tripped circuits that reset without explanation. Any of these, combined with signs of squirrel activity such as daytime noise or disturbed insulation, should be treated seriously.
What to Do If You Suspect Wiring Damage
If you have reason to think wiring in your Henley-on-Thames loft has been gnawed, it's sensible to have it checked by a qualified electrician alongside dealing with the squirrel problem itself — removing the squirrels doesn't repair damage that's already been done. Dealing with the animals and the entry points first prevents further damage while any electrical repairs are arranged.
If you suspect squirrels are active in your loft and are concerned about wiring, don't wait for a bigger problem to develop. Contact Pest Services Berkshire for a free quotation and a proper inspection of the roof space.
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