Signs You Have Rats in Your Loft (and What to Do)

Hearing strange noises in the ceiling at night? Noticing insulation pulled apart or droppings in the attic? You may be dealing with rats in your loft—a common but serious pest issue in UK homes. If left unchecked, rats can cause significant structural damage and pose a real health risk to your household.

Here’s how to recognise the signs, understand the risks, and take practical action.

Common Signs of Rats in Your Loft

Rats are nocturnal and often hide out in lofts, roof voids, and wall cavities where they feel safe and undisturbed. Here are the top warning signs of an infestation:

1. Scratching and Scurrying Sounds

• Typically heard at night in the ceiling or loft

• Rats are active after dusk and often travel in and out via wall voids

2. Droppings

• Rat droppings are dark brown, sausage-shaped, and around 1–2cm long

• You’ll often find them near insulation, stored items, or along runways

3. Chewed Wires and Pipes

• Rats gnaw constantly to control tooth growth

• They may damage electrical wiring, creating fire hazards

4. Nests in Insulation

• Look for shredded insulation, cardboard, or fabric piled into corners

• Rats build nests in dark, undisturbed loft spaces

5. Strong Ammonia Smell

• A persistent, musky smell often indicates rat urine or a long-term infestation

Risks of Having Rats in the Loft

Rats aren’t just unpleasant—they’re dangerous. Here’s why prompt action matters:

• Fire hazard: Gnawed wires and cables

• Water damage: Chewed plumbing can lead to leaks

• Health concerns: Rats can spread leptospirosis, salmonella, and other pathogens

• Structural issues: Nesting rats can damage insulation, rafters, and stored belongings

What to Do if You Suspect Rats in the Loft

1. Don’t Disturb the Nest

While it may be tempting to investigate, avoid stirring up insulation or stored items until you’ve confirmed the problem and made a plan.

2. Inspect for Entry Points

Look for gaps in the roofline, broken vents, pipe access points, and damage near the eaves. Rats only need a 2cm gap to squeeze through.

3. Seal Off Access

Once rats are removed, seal up gaps with wire mesh, steel wool, or pest-proof sealant. Avoid doing this before removal—it may trap rodents inside, worsening the issue.

4. Use Traps or Baits (With Caution)

Snap traps can be effective, but bait should only be used responsibly:

• Keep bait out of reach of pets and children

• Never place poison in open lofts without professional guidance

• Avoid DIY rodenticides, which may not be humane or effective

5. Call a Professional

Professional pest controllers, like GEM Services, offer:

• Expert identification and humane removal

• Safe treatment using industry-approved methods

• Advice on preventing future infestations

Preventing Rats in the Future

• Store food (including bird seed and pet food) in sealed containers

• Trim tree branches near the roofline

• Avoid leaving bin bags outside or under eaves

• Inspect your loft and roof area every few months for early signs

Rats in the loft aren’t just noisy houseguests—they’re a serious problem that requires prompt action. The sooner you identify the signs and take control, the better protected your home will be. For reliable, discreet rat control across your property, contact GEM Services today.