Nearly everybody who describes this says the same thing: it sounds far too big to be a squirrel.
There is a straightforward structural reason for that, and knowing it makes the rest of the noise much easier to interpret.
The ceiling is a drum
A modern ceiling is a thin sheet of plasterboard fixed across joists, with a void above it and a room below. Stretch a thin membrane over a cavity and you have built a drum — and that is what a squirrel is landing on when it jumps between joists.
The energy of the landing goes into the board, the board flexes, and the room below acts as a resonating chamber. What arrives at the person in bed is amplified rather than muffled. A half-kilogram animal produces a sound entirely out of proportion to its size, and the perception of something much larger is a correct reading of the volume rather than an overreaction.
What makes it louder or quieter
- Plasterboard versus lath and plaster. Older lath and plaster is heavier and stiffer, and tends to transmit a duller, deeper sound. Modern board is thinner and livelier
- Insulation depth. Deep modern loft wool absorbs a great deal. In a well-insulated loft the same activity can sound muffled and distant, which leads people to underestimate what is happening
- Loft boarding. Boards over the joists change the sound completely: running on board is a hard, hollow drumming rather than soft thumps
- Room size and furnishing. A bare, high-ceilinged bedroom resonates; a small carpeted room with heavy curtains does not
- Whether the animal is on a joist or between them. On a joist it is a dull knock; between joists it is a drum strike
This is why the noise misleads in both directions. A bare room under thin board makes one squirrel sound like an emergency. A deep, well-insulated loft over a furnished room can make sustained activity sound like next to nothing.
Why it stops so abruptly
Squirrels move in short purposeful bursts and then stop completely, rather than pottering. So the noise arrives suddenly, lasts a few seconds, and ends. That pattern — loud, brief, absolute silence — is quite different from the continuous low-level activity of rodents, and it is one of the more reliable tells.
Ely's mixture of buildings
The city has a wide age range of housing, from properties with lath and plaster ceilings and no roof underlay to modern housing with deep insulation and thin board. The same animal in each of those sounds like a different problem, which is worth remembering when comparing notes with somebody else who has had it.
What does not change between them is the timing: daylight activity, quiet overnight. That is the test that survives the acoustics.
Questions
Could that noise really be one animal?
Yes, and it is the single thing people find hardest to accept. The ceiling is doing most of the work.
Why does it sound like something rolling?
Usually a cached nut or a fragment of debris being pushed across the ceiling. It is a common and much-misidentified sound.
Our loft is very well insulated and it sounds faint. Is that better?
It means the insulation is absorbing sound, not that there is less activity. Judge it on the timing rather than the volume.
Squirrel Control Ely
Squirrel control in Ely is £280 fixed cost. Proofing work, where it is needed afterwards, is £180. Call 01502 630 122 and tell us what you have heard or seen.
For squirrel control in Ely, call 01502 630 122, or read the Ely squirrel control page.