Rats are skilled at exploiting weaknesses in buildings, and older properties are especially vulnerable. We often see infestations in period homes, heritage buildings and older commercial premises. One common entry point is the drainage system. However, indoor rats are a health hazard, so taking action if you have rats is essential.
Why older buildings attract rats
Older buildings often have ageing pipework and outdated drainage systems. Because of this, cracks, gaps and broken joints are common. Rats use pipes and drains to gain access through these weak points, often reaching indoor spaces without being seen.
In many cases, older drains were built with clay pipes or brickwork. These materials can deteriorate over time, making them easier for rats to chew through or squeeze past. Additionally, subsidence or poor maintenance can lead to collapsed or open joints underground.
We often find that rats use pipes and drains to enter through basements, cellars or underfloor voids. Once inside, they make nests in wall cavities, ceiling voids or behind old panelling.
In addition, with outdated layouts and hidden spaces, rats have plenty of places to hide. Businesses in older properties, such as pubs, cafés and shops, face similar risks. Food storage areas, grease traps and old ventilation systems are weak points that help rats move about without being detected. Food outlets should get advice on food hygiene standards when it comes to issues with rats.
How to stop rats using pipes in old buildings
If you live or work in an older building, it’s vital to check for any signs showing that rats use pipes and drains to get in. You may hear scratching behind walls, especially at night. You might also notice droppings, gnaw marks or strange smells from sinks and toilets.
In some cases, rats even surface in toilets, having swum through the waste system. While this is shocking, it shows how determined they can be.
We recommend a full drain inspection, especially in period buildings where the original plans may no longer match the structure. A CCTV drain survey helps locate faults or hidden openings. Once identified, we can install rat flaps or one-way valves to block access.
Drain repairs are also important. When you repair damaged pipes or seal unused outlets, you reduce the risk significantly. We also advise sealing gaps around external pipes and fixing broken air bricks.
In older commercial buildings, we suggest regular maintenance checks. Pests damage stock, reputation and safety. Prevention always costs less than a serious infestation.
We offer tailored solutions in cases where rats use pipes and drains to enter older properties. With the right measures in place, you can protect your building without altering its character. Just because you live or work in an older building, doesn’t mean you have to put up with pests.