Damp Surveyors and The Cutting-Edge Equipment They Use

Damp Surveyors and The Cutting-Edge Equipment They Use

3rd July, 2025

Surveying London properties for damp and mould is a huge industry, largely due to the constant damp and drizzly weather we experience in this part of the world. Today’s damp surveyor makes good use of available technology to accurately assess London homes, which we outline in this short article.

  • Thermal imagery – A thermal imagery camera is used to identify areas with high moisture content, the device detects temperature differences and can help a surveyor quickly hone in on excessive damp areas. An essential device that every damp surveyor would carry; within a few minutes, the surveyor can pinpoint areas with high humidity, then use other equipment to further investigate and identify the source of the moisture. Used specifically to identify damp areas, this is a time-saver and time costs money.
  • Moisture meter – There are two types of moisture meter; namely pinned and pinless and both are used to accurately measure moisture content, with the pinned variety being used to measure moisture content inside timber and plaster. This device is used to measure moisture content in walls, floors and ceilings. Surveyors would carry both types and they would both be used on a wide range of building materials such as brick, render, timber and mortar.
  • Hygrometer – This device accurately measures relative humidity; a reading of 70% or higher indicates a damp issue. All damp surveyors would have at least one, perhaps two hygrometers, in case one malfunctions.
  • Endoscopic camera – Also known as a peephole camera, this device enables the inspector to see those hard-to-reach places; the camera has a small LED light to illuminate the area and this enables the surveyor to see under floorboards and other hard-to-reach places.
  • Drone imagery – Hi-res cameras and a steady hover allows the surveyor to get close-ups in all above-head height locations. You might have a missing roof tile in a difficult-to-see location and a drone can scan the entire roof and even fly slowly along guttering to check for blockages or damage.
  • High-end laptop – The surveyor uses a laptop to store data and create detailed reports (often with images) for the client. Drone footage is uploaded and hi-res images detail issues, when you receive the report, it is a comprehensive breakdown of critical data and may include remedial work recommendations. The report is typically emailed to the client within one working day of the survey, while the surveyor is happy to answer any questions you might have.

At London Damp Surveys, all of our surveyors are fully certified and they make the best use of available technology to bring our clients accurate inspections along with recommendations, if necessary. We cover all London Boroughs; our pre-purchase survey has 3 levels, plus an add-on plaster analysis service.

Call on 0207 305 5997 and we will arrange for one of our surveyors to inspect your London property. We specialise in basement surveys, many London homes have below-ground living space; we inspect and provide you with comprehensive data, including recommended solutions. We have close working relationships with the best damp-proofing teams in the UK, if you are ready to go ahead with the damp-proofing.

Damp Survey Costs

Transparent pricing with no hidden fees for our independent, unbiased surveys.

Level 1

Level 1

£199 + VAT

What’s included:

  • Inspection of walls
  • Inspection of floors
  • Inspection of ceilings
  • Leak inspection of drains and plumbing
  • Damp information and prevention guide
Level 2

Level 2

£299 + VAT

What’s included:

  • Everything in Level 1
  • Dry rot inspection
  • Wet rot inspection
  • Woodworm inspection
  • Damp information and prevention guide

 Survey Add Ons

Add On 1

£299 + VAT
Lab Analysis Of Plaster

Laboratory analysis Of plaster identifies hygroscopic salts such as chlorides and nitrates. which indicate whether damp is caused by rising groundwater or by plumbing leaks, This testing removes guesswork, allowing the exact source of moisture to be identified so the correct treatment is applied rather than carrying out unnecessary damp-proofing work.

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Add On 2

£299 + VAT
Mould Lab Swab Testing, qPCR on DNA

qPCR DNA mould testing detects microscopic mould spores that are invisible during a normal inspection and van remain hidden behind walls, floors. or inside building rkaterials. It identifies the exact mould species present and the contamination level, allowing hidden mould problems to be confirrned and properly treated before they affect the property or occupants’ health.

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Qualifications: All our surveyors are PCA and CSRT qualified for remedial treatments and also CSSW qualified for structural waterproofing.
Next day report: You will receive the report within 24 hours of the inspection taking place.

These are the tools we use

A damp meter

A damp meter

A damp meter is a diagnostic tool used to detect and measure moisture levels within building materials such as plaster, brick, timber, and concrete.

Borescope camera

Borescope camera

borescope camera is a small inspection camera attached to a flexible semi-rigid cable that allows you to see inside areas that are otherwise inaccessible.

Inspection Drone

Inspection Drone

A drone is a remotely operated aerial device equipped with a camera that allows visual inspection from above without the need for scaffolding or ladder.

Air Humidity Sensor

Air Humidity Sensor

Air humidity sensor measures the amount of moisture present in the air, expressed as relative humidity (RH) in percentage. It helps determine whether indoor conditions are contributing to condensation, mould growth, or damp-related issues.

Thermal Imaging Camera

Thermal Imaging Camera

A thermal imaging camera detects temperature differences on surfaces by using infrared technology to produce a heat map image. In damp investigations, it helps identify cold spots, moisture intrusion, insulation defects, thermal bridging and leaks.

Air Flow Ventilation Detector

Air Flow Ventilation Detector

An air flow ventilation detector measures the movement and volume of air passing through vents, extractor fans, and air bricks. It confirms whether ventilation systems are working properly and achieving adequate air changes within a room. Poor airflow leads to trapped moisture, high humidity, condensation on cold surfaces, and ultimately mould growth.

Mould Swab Test Kit

Mould Swab Test Kit

A mould swab test is carried out to confirm the presence of hidden mould growth and identify the specific species involved. Surface mould is not always visible, especially behind furniture, inside cavities, or within ventilation systems. Laboratory analysis of a swab sample determines whether active mould spores are present and what type they are, which helps assess potential health risks and decide the correct remediation approach rather than relying on visual assumption alone.

Plaster Salt Analysis Lab

Plaster Salt Analysis Lab

Laboratory analysis of plaster is used to identify the type of salts present within the material, typically chlorides and nitrates. The presence and concentration of these salts help determine whether the moisture source is consistent with rising damp, ground contamination, or another forms [sic] of water ingress. such as mains water leak, This removes guesswork and prevents misdiagnosis, ensuring the correct remedial treatment is specified rather than applying unnecessary or ineffective solutions.