Rats in My Loft Space in Cambridge

The usual story is the same. Something heavy moves above the bedroom ceiling late at night, it goes quiet by morning, and a trip up the ladder shows insulation pushed into heaps. People expect a loft rat to be a roof problem. Most of the time it is a ground-level problem that has travelled upwards.

How a Rat Ends Up Above Your Ceiling

Brown rats are ground dwellers by preference, but they climb well and they follow warmth. A loft is dry, quiet, rarely visited and full of material that makes good nesting. The question is never really why they want to be there. It is how they got there.

The common routes are inside the structure rather than over the roof: up through a wall cavity from a gap at ground level, along pipework boxed in beside a soil stack, or from a defective drain under the house into a void that runs upwards. In a terrace, a shared loft or party wall can bring a rat in from next door. Less often they climb the outside, using a drainpipe, a climbing plant or a branch that touches the roof. Our post on how rats get into a home covers each of these routes in detail.

Is It Definitely a Rat?

Grey squirrels also live in lofts across Cambridgeshire, and the treatment and the law are completely different for them. Timing is the biggest clue. Squirrels are active in daylight, usually early morning, and tend to be heard running and bouncing. Rats are mostly heard after dark, with a heavier, dragging, scratching movement. Droppings help too: rat droppings are dark, capsule-shaped and found along a route. Our guide to telling a squirrel from a rat in the loft goes through the differences, and the signs of rats post covers what else to look for.

Why It Is Worth Dealing With Now

Rats gnaw constantly because their front teeth never stop growing. In a loft that means cable sheathing, plastic water pipes, timber and the ducting from bathroom fans. Chewed cable is a fire risk and a leaking tank pipe can bring a ceiling down. Nesting also flattens and soils insulation, which then stops doing its job.

There is a hygiene side as well. Urine and droppings soak into insulation and boarding, and anything stored up there in cardboard boxes is worth checking before it comes back into the house. Wear gloves, and do not sweep dry droppings in a way that raises dust.

What Not to Do in the Loft

• Do not scatter poison across the insulation. A rat that feeds and then dies inside a wall or under boarding cannot be reached, and the smell can last for weeks.
• Do not block the hole you think they use while they are still active. A rat sealed inside the roof will gnaw its way out through something else, often a ceiling or a cable run.
• Do not rely on a plug-in sound device. Nothing we have seen suggests one will move an established rat.
• Do not leave food, bird seed or pet food stored in the loft in bags. That alone can keep a rat interested.

What We Do About Rats in a Loft

We start by working out the whole route: where the activity is in the roof space, how it connects to the rest of the building, and whether the source is outside, next door or in the drains. That usually means looking at the loft, the ground floor, the outside walls and the drainage covers on the same visit.

Treatment then goes into protected positions on the route the rats are using, where children, pets and other animals cannot reach it. Before any treatment we tell you what is being used, where it is going, when rooms can be used again and what to do with pets, and we ask you to follow those instructions. Rats are wary of anything new in their path, so rat work normally needs more than one visit before we can confirm activity has stopped. See the rat control service for how that works.

Rat control is £260, with no call-out fee and the price confirmed before anything is booked. Once the loft is quiet, the route in can be sealed as a separate job: rat and mice proofing is £180 for up to 1 hour, and any further time is quoted before it is carried out. The rat control cost guide explains what the treatment price covers.

Clear the loft, then close the way up. Doing only the first half is how people end up with rats in the loft every winter.

Every treatment is guaranteed: if the problem comes back within 14 days of treatment, we return and re-treat free of charge.