Rat Entry Surveys in Mortlake (SW14)

How the Investigation Works

Rat activity can sometimes be linked to damaged or poorly connected drains, redundant pipework, broken inspection chambers or openings that allow movement towards a building. However, drains are only one possible route.

A responsible investigation considers the drainage evidence alongside possible entry through wall cavities, floors, roofs, service ducts, neighbouring properties and external gaps. Where a drainage defect is found, the repair should be targeted at the proven route rather than based on assumption.

Could the Drains Be the Rat Entry Route?

Broken drains, redundant branches, open joints, damaged chambers and poorly sealed soil-pipe connections can provide a route towards a building. A CCTV inspection can help establish whether drainage defects support that theory.

Other Routes Must Also Be Considered

Rats may enter through wall cavities, suspended floors, roofs, service ducts, air bricks, gaps around pipes or neighbouring properties. Rat Entry Surveys in Mortlake should therefore form part of an evidence-led investigation rather than an automatic assumption that every rat problem starts in the drains.

What Happens When a Drainage Route Is Found?

The repair should close the proven opening using a method appropriate to the defect and access. Depending on the property, separate proofing and pest-control measures may also be needed to remove established activity and close non-drainage routes.

Persistent Rat Problems in Mortlake

Where baiting alone has not solved the problem, investigating how rats are reaching the property can be more valuable than repeatedly treating the symptoms. The aim is to identify and close the route, not simply record that rats are present.

When Rat Entry Surveys in Mortlake (SW14) Are Appropriate

This service is appropriate when there is a reasonable possibility that drainage defects are contributing to rat access, especially where activity is repeated or concentrated near toilets, floors, kitchens or drainage routes.

Chris’s Professional Advice

Rat activity should never be blamed on drains without evidence. A complete solution may involve drainage repairs, proofing, pest control or work elsewhere in the building.

A camera image on its own is not enough. The important part is interpreting what it shows and deciding whether the finding is relevant to the problem.

A clear drain can still contain a defect, while a blocked drain can sometimes be structurally sound. Symptoms and evidence must be considered together.

What Happens Next

I first establish the reason for the visit and the most useful access points. I then carry out the relevant clearance, inspection or investigation, explain the findings and discuss proportionate options. Where another trade, pest controller, insurer or structural specialist is more appropriate, I say so.

Frequently Asked Questions