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Damp and structural leak detection

Damp has several possible causes and the remedies differ. Moisture mapping establishes which one applies.

Call 0333 567 2635

Seven days a week, 7am to 9pm

What usually brings us out

  • A tide mark rising up a wall
  • Damp on one side of a party wall and nothing on the other
  • Water appearing in a basement only after rain
  • Mould returning in the same corner however often it is cleaned

How we go about it

  1. 1Pin and pinless moisture meters, mapped across the whole wall
  2. 2Thermal imaging to separate a cold bridge from a wet patch
  3. 3Tracer gas or dye where a service pipe is suspected
  4. 4Written findings that say what it is and what it is not

Damp and structural ingress in one visit

Where the cause is a plumbing leak, the repair can usually be completed on the visit. Structural remedies are a separate trade.

Call 0333 567 2635

Jobs like this one

  • The blue supply pipe and its tee junction in the flooded excavation beside the meter boxMarlborough · Artur Sowa

    Water in the basement, and no internal stopcock

    A flooded basement with the problem outside the house. Two meter boxes, a stopcock hidden in an old gas box, and a broken fitting between them.

    Broken meter outlet fitting found and rebuilt; basement flooding source removed.

Reviews of the engineers who do this work

TrustScore 4.7 from 1,629 reviews

Read every review on Trustpilot

Read 7 October 2026

  • Excellent Leak Detection and Repair

    We had a major water leak of approximately 220 litres per hour and, with a holiday booked only a few days later, we urgently needed someone to find and repair it. […] Frank arrived at our house. He was extremely polite, professional and clearly very experienced. He quickly set up the equipment, carried out a tracer gas test and pinpointed the leak to an area just outside our garage underneath the driveway. […] The whole job, from arriving at our house to finding and repairing a 220 litre-per-hour leak, was completed in around three hours.

    Shortened. The marks show where text was left out.

    Peter JorgensenRead it on Trustpilot
  • Fast, effective leak diagnosis and repair

    Fundamentally, the engineer (Mark Pavitt) identified the source of the leak, repaired it and had our house back up and running within the same day. As part of achieving this, he kept the damage to a minimum (only having to cut out sections of the kitchen plasterboard ceiling). He cleaned up the debris, was polite, cheerful and informative of root cause and actions throughout the day. I think the key to success is having an engineer that has expertise in both leak detection and plumbing.

  • Very professional and swift service

    Very professional and swift service. Frank arrived and had detected and repaired the leak within 3 hours. Would highly recommend

Speak to the team that books the engineers.

One call confirms the earliest available date and the price, before you commit to anything.

  • You describe what you have seen
  • We find the nearest available engineer
  • You get a date and a price before booking
0333 567 2635Call now

Seven days a week, 7am to 9pm. Most home insurance covers the cost of finding a hidden leak.