How Do Rats Get Into a Loft?
Rats are surprisingly good climbers. Brown rats — the most common species in the Midlands — can scale rough brickwork, drain pipes, and even vertical walls. Once they find a gap around a roof tile, a loose soffit board, or a gap where pipes enter the building, they're in.
Once inside, a loft is ideal for them: warm, undisturbed, and often full of soft nesting material like insulation.
The Warning Signs
1. Scratching or scurrying noises at night
Rats are nocturnal. If you're lying in bed and can hear movement in the ceiling above you — especially between 11pm and 4am — there's a good chance you have rats. The noises are often described as scratching, gnawing, or rapid movement across the ceiling.
2. Droppings
Rat droppings are dark brown, capsule-shaped, and roughly 10–15mm long. You'll typically find them along walls, near food sources, or in the corners of your loft. Fresh droppings are soft and dark; older ones dry out and lighten in colour.
3. Gnaw marks
Rats' teeth never stop growing so they gnaw constantly to keep them worn down. Look for chew marks on roof timbers, plastic pipes, electrical cables, and stored boxes. Chewed wiring is a serious fire hazard.
4. Nests
Rats build nests from shredded material — loft insulation, cardboard, fabric, newspaper. If you see a ball-shaped bundle of torn material in a corner or behind a water tank, that's a nest.
5. Grease marks (smear marks)
Rats follow the same routes repeatedly. Over time, the grease and dirt from their fur leaves dark smear marks along walls, beams, and entry points.
6. Smell
A strong ammonia-like smell in your loft is a sign of a significant infestation. Rats urinate frequently and the smell builds up over time.
Why You Shouldn't Ignore It
- Fire risk: Rats chew through electrical cables. This is one of the leading causes of house fires with no obvious ignition source.
- Health risk: Rats carry Weil's disease (leptospirosis), salmonella, and other pathogens. Their droppings and urine can contaminate water tanks and surfaces.
- Structural damage: Sustained gnawing can damage roof timbers, insulation, and plumbing.
- They breed fast: A pair of rats can produce up to 200 offspring in a year. A small problem becomes a large one very quickly.
What NOT to Do
- Don't just set supermarket traps and hope for the best. DIY traps can thin numbers but rarely eliminate an infestation, especially if the entry points aren't sealed.
- Don't use poison without knowing what you're doing. Incorrectly placed poison can harm pets, children, or wildlife. In the UK, second-generation rodenticides are legally restricted and must be used responsibly.
- Don't leave it too long. The longer a colony establishes itself, the more difficult and costly it is to treat.
What a Professional Will Do
A qualified pest controller will:
- Survey the property to find all entry points
- Place professional-grade bait stations in the correct locations, out of reach of children and pets
- Return for follow-up visits to monitor activity and replenish bait
- Proof the property — sealing entry points with gnaw-resistant materials to prevent re-entry
- Confirm clearance once activity has stopped
Most rat infestations in a residential loft can be cleared in 2–3 visits over 2–3 weeks.
Pest Control for Rats in Leicester & the Midlands
If you've spotted any of the signs above, don't wait. Pest Control 24/7 covers Leicester, Wigston, Oadby, Blaby, Hinckley, Loughborough, and across the Midlands. We're available 24 hours a day, 7 days a week — including weekends and bank holidays.
Call us on 0116 3667269 or use our contact form to request a free quote.