Noise in the roof nearly always means a gap at the eaves, a missing tile, or an open verge. Birds and wasps enter at the soffit and the fascia junction; squirrels and rats come in higher up. Nesting birds are legally protected while in use, so the permanent fix is usually timed for autumn or winter.
- Scratching in daylight is usually birds. Night-time scurrying is more likely rodents.
- It is an offence to destroy an active nest, so blocking the gap must wait.
- Closing the hole is the fix. Everything else is temporary.
- Check the eaves, the verge and any missing tile — those are the three ways in.
What is up there, and how to tell
| Clue | Likely cause | Where they get in |
|---|---|---|
| Scratching and chirping, daylight, spring | Nesting birds | Gap at the eaves or soffit joint |
| Heavy scurrying, dawn and dusk | Squirrels | Eaves, verge, or gnawed opening |
| Light scurrying at night | Rats or mice | Any gap; they climb well |
| Steady buzzing, summer, one spot | Wasp nest | Small gap at the soffit or verge |
| Droppings on the drive below the eaves | Birds or bats roosting | Eaves |
| Insulation pulled about, wiring gnawed | Rodents or squirrels | Already established |
| Repeated flights to the same spot | Active nest | That exact point |
| Staining and feathers at the gutter | Birds nesting in the gutter itself | Open gutter |
Bats are a special case. All British bat species and their roosts are legally protected whether or not bats are present at the time, and work affecting a roost needs advice and often a licence. If you suspect bats, stop and get a professional ecological opinion before any roofline work.
The three ways in
Almost every roofline intrusion uses one of three routes, and all three are visible from the ground with binoculars on a dry day.
The eaves. The junction where the soffit meets the wall, where it meets the fascia, and at the corners where fascia meets bargeboard. Gaps appear as timber shrinks, as boards decay, or because a replacement roofline was fitted without closing the ends properly. A gap of 25mm is ample for a starling or a sparrow, and wasps need far less.
The verge. The roof edge at a gable, traditionally bedded in mortar. When that mortar cracks and drops out, it leaves a clear run straight into the roof space under the tiles. This is a very common entry point and it is frequently mistaken for a roofline problem when it is a verge problem.
Missing, slipped or broken tiles. Any opening in the covering is an invitation, and birds in particular find them quickly. A slipped tile at the eaves is the worst case because it combines an opening with easy access.
There is a fourth that catches people: the gutter itself. Birds nest in gutters, especially where a gutter is already silted and holding debris, and the nest then blocks the outlet.
The relevant point for diagnosis is that the noise you hear inside is often some distance from the hole. Birds and rodents move along the eaves once inside, so the entry point has to be found by looking rather than by listening.
The law on nesting birds
This matters because it determines when the work can happen, and getting it wrong is an offence rather than a mistake.
It is an offence to intentionally kill, injure or take most wild birds, and to intentionally damage or destroy a nest while it is in use or being built. That protection applies to the nest, so blocking the entrance to an active nest — trapping the young inside — is not a loophole.
In practice this means:
Nesting season roughly runs March to August, with the main activity in spring and early summer. It is not a fixed legal window; what matters is whether a nest is actually in use.
You cannot close the gap while a nest is active. The work waits until the birds have fledged and the nest is no longer in use.
Autumn and winter are the sensible time for roofline work where birds are known to be nesting, which is worth factoring into when you book it.
Some species have additional protection, and certain nests are protected even when not in use.
Check before any roofline or roof work, not just when you have a known problem. A contractor stripping a fascia in May can disturb a nest nobody knew about.
The practical approach: if you discover nesting birds, note exactly where the entry point is, accept the noise for a few weeks, and book the permanent repair for the autumn. Trying to deal with it in June is both unlawful and futile, since the adults will simply find the next gap.
Fixing it permanently
- Find the actual entry point by watching rather than guessing. Twenty minutes with binoculars on a spring morning will show you exactly where the traffic goes.
- Wait, if there is an active nest. Autumn or winter for the permanent work.
- Clear the nest and debris once it is no longer in use, and check for damage — nesting material against a cable, droppings soaking insulation, chewed wiring.
- Close the gap properly. That means repairing or replacing the failed board, closing the ends of the soffit, and sealing the corner junctions. Expanding foam is not a repair; birds and rodents remove it.
- Fit eaves comb filler or bird comb where the tiles meet the fascia. This is a profiled strip that fills the gaps under the tile corrugations while still letting air through, and it is the standard detail that should have been there.
- Replace a mortar verge with a dry verge system if that is the route in. Mechanically fixed caps close the edge permanently and do not need repointing.
- Replace missing or slipped tiles and check the rest of the covering while access is there.
- Keep the gutters clear, which removes the nesting material that makes a gutter attractive.
Step five is the one most often left out of a roofline job and it is inexpensive. Eaves comb filler closes the gaps under the tiles without blocking the ventilation path, which is the balance that matters — sealing the eaves completely causes condensation, so the fix has to exclude animals and admit air at the same time.
The damage worth taking seriously
- Gnawed cables. Rodents and squirrels chew wiring insulation, and a damaged cable in a loft full of nesting material is a genuine fire risk. This is the reason not to leave a rodent problem through a winter.
- Compressed and soiled insulation. Insulation flattened into runs and fouled with droppings stops insulating, and it has to be removed and replaced rather than cleaned.
- Blocked ventilation. Nesting material packed into the eaves blocks the airflow, which then causes condensation and rot — so a bird problem turns into a damp problem.
- Blocked gutters and outlets. A nest in a gutter or at the head of a downpipe causes overflow, and overflow onto a wall causes damp inside.
- Damaged felt. Squirrels in particular tear roofing felt, which then lets water past the tiles.
- Wasp nests are a nuisance rather than structural damage, but they make any work at the eaves impossible until dealt with, and they need treating by someone equipped for it.
- Smell and flies where something has died in an inaccessible part of the roof, which is unpleasant and difficult to resolve.
- Droppings on paths and cars below the entry point, which is usually what prompts people to act.
What it costs
These are the roofline figures published across this site:
| Job | Typical Coventry guide price | Notes |
|---|---|---|
| Per elevation (fascia + gutter) | £400–£700 | Front or rear |
| Full uPVC fascia, soffit & guttering (semi) | £1,000–£1,500 | Supply & fit |
| Labour | ~£30/hr | Qualified roofline fitter |
| Gutter clean & reseal | £80–£200 | Clears blockages, stops overflow |
Closing an entry point is usually a small job in itself, and the cost is dominated by access. Where the roofline is also tired, doing the elevation properly and fitting eaves comb at the same time costs little more than the repair alone and solves it permanently. Pest removal and wasp nest treatment are separate specialist costs.
Watch the eaves for twenty minutes on a spring morning and you will see exactly where it is getting in. Then book the repair for autumn.
Frequently asked questions
What is scratching in my roof?
Scratching and chirping in daylight during spring is usually nesting birds. Heavy scurrying at dawn and dusk suggests squirrels; lighter scurrying at night suggests rats or mice. Steady buzzing in one spot in summer is a wasp nest. All of them got in through a gap.
Can I block up where birds are getting in?
Not while a nest is active. It is an offence to intentionally damage or destroy a nest in use, and blocking the entrance traps the young inside. Note where the entry point is, accept the noise for a few weeks, and book the permanent repair for autumn or winter.
How do birds get into the roof?
Three main routes: a gap at the eaves where the soffit meets the wall, fascia or corner; a failed mortar verge at a gable leaving a run under the tiles; or a missing, slipped or broken tile. A 25mm gap is ample for a starling, and wasps need far less.
What is eaves comb filler?
A profiled strip fitted where the tiles meet the fascia, filling the gaps under the tile corrugations while still allowing air through. It is the standard detail for keeping birds out of the eaves without blocking roof ventilation, it is inexpensive, and it is often omitted.
Should I just foam the gap?
No. Expanding foam is not a repair — birds and rodents remove it, and it blocks ventilation where it does hold. The fix is repairing or replacing the failed board, closing the soffit ends and corner junctions properly, and fitting eaves comb so air can still pass.
What if there are bats in my roof?
Stop and get a professional ecological opinion before any work. All British bat species and their roosts are protected whether or not bats are present at the time, and work affecting a roost needs advice and often a licence. This applies to routine roofline work too.
Exclude animals, admit air
Sealing the eaves completely causes condensation. We close the gaps with eaves comb so the roof still breathes.