Insulation damage is one of the most common — and most overlooked — consequences of squirrels in the loft. It's rarely the reason someone first calls us, but once we're up in a Maidenhead loft carrying out an inspection, it's often the most visible sign of how long squirrels have actually been present.
Why Squirrels Damage Insulation
Squirrels don't target insulation out of spite — they use it as raw material. Loft insulation, particularly the softer mineral wool and fibreglass types common in lofts across Maidenhead's older housing stock, is pulled apart and compacted into a nest, or drey. Squirrels also dig through insulation to reach joists and boarding underneath, and their droppings and urine accumulate within it over time, which affects more than just its heat-retaining properties.
What the Damage Typically Looks Like
- Insulation pulled into a compressed, matted mound rather than sitting flat and even.
- Bare patches of joist or ceiling board showing through where insulation has been dragged away.
- Insulation pushed into corners or against water tanks and pipework.
- Contamination with droppings, urine staining, or bedding material such as leaves, twigs and shredded loft debris.
- Compression in walkway areas where squirrels move repeatedly between the entry point and the nest site.
Why It Matters Beyond the Mess
Insulation works by trapping air, so once it's compressed or pulled out of place, its ability to retain heat drops significantly in that area — even if the rest of the loft still has a full depth of insulation. Over a full winter, that can mean noticeably higher heating use in the rooms below the affected section. Contaminated insulation is also not something to simply fluff back into place; damaged or heavily soiled sections generally need replacing rather than reused.
Because insulation damage tends to happen gradually, most homeowners only discover the full extent once squirrels have already been removed and the loft can be properly inspected. If you suspect insulation damage in your Maidenhead loft, or you've recently had squirrels removed and want the area checked, contact Pest Services Berkshire for an assessment.
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