How an Independent Damp Survey in London Could Save You Thousands of Pounds
If you are planning to buy real estate in London, you are looking at a huge investment and it makes total sense to have the property surveyed for damp before you sign on the dotted line. Damage caused by damp can easily be concealed and the average person might not notice anything wrong, as there might not be any visible signs, yet eventually, it will become apparent that serious repairs are needed.
This is moisture that rises up from the ground, damaging masonry, render and plaster as it creeps through building materials. Every structure should have a damp-proof course, which is a membrane that is sandwiched between the first two brick courses and the DPC provides a barrier to stop moisture from impacting the building. In the event the DPC is damaged, there would be no external signs to make the homeowner aware and as time passes, damp gradually climbs the walls, damaging plaster and timber. One solution is to inject a chemical foam into the wall cavities, which creates an impenetrable barrier against damp.
Woodworm
This tiny insect can cause considerable damage to timber sections in a house, especially in the loft, where the joists and rafters are located. The worst-case scenario is that you go ahead with the house purchase, only to discover later that damp has caused damage that will cost thousands of pounds to repair. This nightmare scenario can easily be avoided by arranging for an independent damp survey from London Damp Specialists.
Pre-Purchase Damp Survey
This survey is designed for those who wish to buy a property and would like an accurate assessment of damp, mould and timber rot. In the event there are damp issues, you can negotiate with the seller or insist that damp-proofing work is carried out. It is very easy to conceal damp, all it takes is a skim of plaster and a coat of paint and unless you are knowledgeable about construction, you would not notice the signs.
3 Levels of Damp Survey
We offer 3 different levels of independent damp surveys, which are as follows:
- Level 1 damp survey – A thorough inspection of exterior and interior walls, looking for signs of moisture penetration.
- Level 2 damp survey – All in level 1, with the addition of an inspection of all timber sections in the house.
- Level 3 damp survey – All of levels 1 & 2, plus the use of thermal imagery, relative humidity test, ventilation flow test, borescope camera and the use of drone imagery.
Additional Tests
For an additional fee, we can analyse up to 10 plaster samples in a lab, accurately measuring the moisture content for a definitive answer.
Buying real estate involves making a significant investment and if you plan to make an offer on a London property, make sure you book an independent damp survey from London Damp Specialists; call us on 020 7205 4886 or complete the booking form on this website and get a professional assessment of damp, mould and timber rot.
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.
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