Independent Damp Surveys in London
- PCA Registered Surveyors
- Qualified to industry standards (CSRT & CSSW)
- Public liability limit of indemnity £5 million
Trust London Damp
We are a Chartered Building Company, Full members of the BWPDA (British Wood Preserving & Damp Proofing Association), PCA (Property Care Association), CHAS and the Guarantee Protection Trust.
Independent Damp Surveys in London
At London Damp Specialists, we have been surveying London homes since 1981, helping property owners identify damp, mould, condensation and timber rot. Our independent damp surveyors are fully certified and have years of hands-on experience, we are proud of the services we offer London homeowners to combat all forms of damp, mould and timber rot.
London and the Southeast sit on the Thames Valley basin, which has layers of clay and that is bad news for London home and business owners. Add to that the fact that rainfall is increasing, which is likely due to global warming and this brings a high demand for damp proof specialist companies that carry out independent damp inspections in London.
We cover all London Boroughs within the M25 and if you are looking to make an offer on a London property, or you are soon to put your London home on the market, we recommend having the building inspected for damp, mould and timber rot by one of our experienced independent damp surveyors. This is the only way to be sure that the structure is damp-free and should there be issues, better to know before you make an offer rather than after you become the new owner and move in. Damage caused by damp can easily be concealed with a little plaster and paint; our independent damp surveyors in London use state-of-the-art digital equipment to identify and measure moisture content within a building and the customer receives a detailed report that covers all aspects of damp, mould and timber decay within 24 hours of survey completion.
We focus on looking for the following:
- Rising damp – Ground moisture rises up the walls, usually due to damaged DPC.
- Penetrating damp – Moisture enters the building via the roof or exterior walls.
- Condensation – Droplets of water form on hard surfaces
- Wet and dry rot – Destructive fungi that eat away at timber, both thrive in humid conditions.
- Woodworm – Two types of beetle are found in London, which burrow tiny holes in wood and when the eggs hatch, the larvae consume wood pulp.
- Basement tanking – Below-ground living space is at high risk of rising damp and mould; our surveyors are trained to inspect every square inch of a basement to give an accurate assessment. It is crucial to trace the origin of the damp, which leads to the correct damp-proofing. We have connections with an established company that offers basement water-proofing in London.
We provide independent damp surveys for London homeowners and we have a working relationship with top damp-proofing specialists; should your London home require damp-proofing.
Areas in London we cover include Fulham, Chelsea, Kensington, Camden, Wimbledon, Dulwich and Islington; all areas within the M25 come under our umbrella.
Book & Pay Online
Securely book your damp survey online in minutes.
Reports
Your full damp survey report is delivered within 24 hours.
Money-Back Guarantee
If we are unable to identify the cause of the damp, you’ll receive a full refund.
TYPES OF DAMP WE SURVEY
Respect
We respect your property and belongings and take pride in ensuring a clean and habitable working environment for our customers.
Understanding
The provision of a clear specification of works ensures both we and the customer understands what is expected from the outset.
Timely
We agree realistic, suitable and appropriate timescales that work with our customers' schedules to ensure that we complete on time.
Quality
We listen to our customers. Our trades people have many years’ experience and our directors visit sites regularly to maintain our brand and vision.
Digital Equipment We Use
Our independent damp surveyors are CSRT & CSSW certified and they use a wide range of tools and equipment.
- Damp meter – This handy device comes in pinned and pinless types; the pins are inserted into building materials such as timber, plaster and render. Our surveyors use both types to accurately measure moisture levels throughout the property; the pinless version measures moisture on surfaces. It is crucial to be able to measure and identify moisture and damp meters are essential to quickly establish humidity levels.
- Infrared camera – Thermal imaging helps the surveyor get an overall picture of humidity levels; simply point the lens and objects on the screen are coloured, with red warmer and blue cooler. If the surveyor gets a blue reading around a window frame, this suggests penetrating damp and the inspector can investigate further to determine the origins of the moisture.
- Drone images and video – The roof is generally inaccessible and rather than climb onto the roof, the surveyor flies their drone around the entire structure, taking images and footage if issues are discovered. Every square metre of the roof is inspected and notes are recorded. The fascia and soffit boards, guttering and chimney flashing can all be checked using a small drone.
- Ventilation flow test – Ventilation is important to keep the interior dry and our surveyors use a hand-held digital device with a small rotary fan that measures air movement. Measuring at various locations gives the surveyor an accurate air flow measurement and recommendations can be made to boost ventilation within a London property.
- Borescope camera – A pinhole camera with a small spotlight is a great tool to inspect dark corners and hard-to-reach places, where mould and timber rot thrive. Used to inspect under floors and throughout attics and cellars. No surveyor would leave home without this handy device, which saves time and is very thorough.
- Hygrometer – A digital device to measure air moisture, with a few features that provide the surveyor with additional data. Measuring the humidity tells the surveyor where damp and mould are likely to be present and this is one of the first pieces of equipment to come out of the bag.
Damp Survey Costs
Transparent pricing with no hidden fees for our independent, unbiased surveys.
Level 1
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
What’s included:
- Everything in Level 1
- Dry rot inspection
- Wet rot inspection
- Woodworm inspection
- Damp information and prevention guide
Level 3 (Most Popular)
What’s included:
- Thermal Imaging
- Air humidity testing
- HD boroscope camera
- Brickwork pointing inspection
- DPC inspection
- Ventilation flow test on extractor fans
- 4K drone imagery roof, chimney stack
and guttering inspection - Structural condition inspection
- Inspection of walls
- Inspection of floors
- Inspection of ceilings
- Leak inspection of drains and plumbing
- Dry rot inspection
- Wet rot inspection
- Woodworm inspection
- Damp information and prevention guide
Survey Add Ons
Add On 1
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.
Add On 2
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.
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
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 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
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 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
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
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
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
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.
