UK Homeowners – Tell-Tale Signs That You Need to Call in a Damp Specialist
If you are a UK property owner, you already know how important building maintenance is, and damp is a very real threat. The best way to invite moisture into your home is to do nothing, and with that in mind, here are a few tell-tale signs that you need to call in London Damp Specialists.
- Condensation – One of the biggest enemies of UK property owners, condensation forms on surfaces when the air is moist, typically on the inner window panes, where warmth meets cold air. If the only place condensation forms is on the window glass, that doesn’t mean you have damp issues; replacing the windows with double-glazed units will remove condensation completely. If, however, condensation forms on walls or timber frames, this means the air is humid and remedial work is needed.
- Crumbling masonry/mortar – If damp is present in exterior walls, you might notice crumbling mortar or brickwork; this can be caused by moisture rising up from the ground, which means the damp proof course is compromised. Another likely cause is blocked guttering, which sends excess rainwater running down the exterior walls.
- Damp patches on interior walls and ceilings – Check every room and if you notice tide marks or damp patches on plaster, moisture is getting into your home. Of course, if there are damp patches, you need to identify the source of the moisture, which is where we at London Damp Specialists come in.
- Musky odour – If you notice a musky smell in the house, it is likely that mould is present and that needs to be investigated. Good ventilation can dry out the air and heating the whole house is another way to reduce the risk of mould and mildew. If left unaddressed, mould can cause respiratory issues, especially black mould, so don’t take any chances with mould growth.
- Moss growth on exterior walls – If you see moss growth on exterior walls, this is a sure sign that moisture is present, especially near ground level. Walk around the house perimeter checking the masonry/brickwork/mortar; moss can be scraped away and a screwdriver can be used to test whether the material crumbles.
- Roof inspections – It is wise to have the roof inspected every 4-6 months; your local roofing contractor can do this and will issue you with a written report on the status of the roof. A few missing roof tiles can cause serious damp issues after a bout of heavy rain, so be vigilant and keep your eyes open.
- Peeling wallpaper – Damp compromises wallpaper adhesive and if you notice the corners of wallpaper coming away from the walls, you need to call London Damp Specialists on 020 7458 4864 and arrange for a survey to be carried out. The surveyor will identify the origins of the moisture and recommend a damp proofing solution that will last for many years.
As far as damp and mould are concerned, you can’t afford to take chances; call London’s leading damp proofing specialist and let the experts inspect your home.
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:
- Everything in Level 1 & Level 2
- 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
- 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.
The survey fee will be deducted from the cost of any recommended repairs.
These are the tools we use
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 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
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 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
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.
