The Tools That Damp Surveyors Use

Considering the wet weather, it’s no surprise that many London homes suffer from rising damp. If you are concerned for your home, an independent damp survey can assess it for damp-related problems. Today, we will look at the special tools they use to determine if your home is endangered by excess moisture.

Thermal Imaging – The thermal, or infrared camera, detects the heat objects give off and reveals them on a visual display so the surveyor can view an image of the heat patterns in a space. Cooler materials look blue and hotter surfaces look red. Readings are taken throughout the house to give the surveyor important information on temperature variances.

Borescope Camera – This peephole camera can reveal out-of-reach spaces, like under the floorboards, beneath stairs and between walls. This ability to make a visual inspection remotely is essential for independent damp surveyors to help them find hidden mould, mildew, dry and wet rot, and woodworm.

Screwdriver/Scraper– This simple but useful tool is used to probe the home’s exterior walls in search of damp, mould, and mildew. The growth of moss is a sure sign that the building materials are compromised, vegetation is scraped away in order to get a clear look at what’s underneath, looking for signs that the material has been damaged.

Moisture Meter – These come in two types; pinned and pinless. The pinned meter can measure the moisture inside of materials like wood, cement, and plaster. The pinless meter measures surface moisture. There is a combination meter that does both that most independent damp surveyors carry with them. Being able to accurately measure moisture in a home’s materials is critical to assessing damp problems and finding solutions.

Salt Test Kits – These are used to measure the moisture in samples of plaster. The salt test kits can also be employed to determine the amount of moisture contained within walls.

Hygrometer – This device measures the moisture in the air, an important tool for every independent damp surveyor. The Relative Humidity (RH) is measured to identify where the moisture is originating from and to form a clear picture of each room’s general humidity, an indicator of dampness.

Rotating Anemometer – A device designed to measure airflow, an important component of the damp survey. Ventilation flow tests can establish the level and direction of airflow within your home. Proper ventilation, both natural or mechanical, dries out the atmosphere and is vital for reducing and removing excess moisture from the air. If the home lacks proper ventilation, it will be much more susceptible to rising damp problems.

At London Damp Specialists, our experienced surveyors use cutting-edge technology to diagnose damp issues, so our inspections are always performed to the highest standard. If you have a rising damp problem just call London Damp Specialists on 020 7523 5882 and we will dispatch an independent damp surveyor near you to help ascertain your damp problem. Now is the right time of year to carry out an independent damp survey in your London home.

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.

The survey fee will be deducted from the cost of any recommended repairs.

These are the tools we use

Damp Meter

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.

Drone Inspection

Drone Inspection

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 Lab Swab Testing

Mould Lab Swab Testing

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.

Lab Analysis of Plaster

Lab Analysis of Plaster

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.

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Contact Us

If you have some questions, please complete this form:

Book and Pay for a survey

If you are ready to book a survey and pay, please complete this form:

Book Survey

Contact Us

If you have some questions, please complete this form:

Book and Pay for a survey

If you are ready to book a survey and pay, please complete this form:

Book Survey