Squirrel Damage to Roof Spaces, Cables and Insulation

Why squirrels do so much damage

Like rats, squirrels have front teeth that never stop growing, so they gnaw to keep them worn down. They also chew to make entry holes, to widen gaps and to collect nesting material. In a loft they find plenty to work on: roof timbers, fascia boards, insulation, stored boxes and pipework. The problem tends to grow quietly. A small hole at the eaves becomes a larger one, and a single nest can become several, particularly where squirrels return year after year.

Damage to roof edges and timber

The first damage is often outside. Squirrels chew at fascias, soffits, barge boards and the edges of tiles to open a way in. Look from the ground for ragged or enlarged holes, fresh pale wood where the weathered surface has been stripped, and displaced tiles or lifted lead flashing. Inside, gnawed rafters and battens may be visible near the entry point. Over time, repeated chewing and damp getting in through the new gaps can weaken timber, so it is worth catching it early.

• Fresh wood shavings on the ground below the eaves or in the loft
• Ragged holes in fascias or soffits that seem to be getting larger
• Slipped tiles or disturbed roof edges close to overhanging branches
• Damp patches or stains on ceilings below where holes have opened

Cables, wiring and pipes

Gnawed wiring is the most serious risk. Squirrels may strip the covering from electrical cables, and that can lead to faults, tripping circuits or, in the worst cases, fire. Loft lighting, alarm cables, aerial and broadband leads and solar panel wiring can all be affected, as can plastic water pipes. If you notice flickering lights, a dead socket, a burning smell or sparks, switch off at the consumer unit if it is safe to do so and call an electrician. Do not touch damaged cables yourself.

Insulation, nests and droppings

Squirrels pull insulation apart to line their dreys, which leaves cold patches and cuts the loft's ability to hold heat. Droppings and urine soak into the material and give off a strong smell, and old nests can attract other pests. Soiled insulation often needs removing and replacing rather than simply tidying. Do not handle nesting material or droppings without protection, and keep children and pets out of the loft. A professional can clear and advise on what is worth keeping.

What you can safely do yourself

From the ground, you can look for fresh gnawing, listen for daytime noises and check that overhanging branches are not giving easy access to the roof. Take photographs of any damage, which can help when you discuss repairs with a builder. Keep loft visits brief and careful, stepping only on joists, and never lean on insulation or boards you cannot see beneath. Leave any wiring alone and do not attempt roof repairs without proper access equipment.

When to call a professional

Call us when you hear squirrels, see chewing at the roof edge or find droppings and nests. We will remove the squirrels humanely, check the roof space and show you where the damage is. If cables are involved, have a qualified electrician test the circuits as well. The sequence matters: deal with the squirrels first, then clean, then proof and repair, otherwise new holes are chewed as quickly as old ones are fixed. We work across Essex, in both older and newer homes.

Preventing a repeat

Proofing is the lasting fix. Entry points should be sealed with tough materials that squirrels cannot chew through, fitted neatly, with particular attention to eaves, soffits, ridge areas and vents. Trim branches that touch or hang over the roof, and keep feeders away from the house. Repair any damaged timber promptly, since soft or rotten wood is easy for squirrels to enlarge. An annual look at the roofline, ideally in autumn before cold weather sends them looking for shelter, helps catch problems early.