Is Your Home Displaying These 5 Warning Signs of Damp?
If you were to ask a UK citizen what they dislike most about their homeland, the majority would say the cold, damp weather; when was the last time you can remember blue skies and sunshine? The constant dampness is a real concern for UK homeowners and with that in mind, here are a few warning signs that your home is under attack from damp.
- Damp patches on walls or ceilings – This would normally be the result of a leaking roof or blocked guttering that send rainwater cascading down the exterior walls. Check every room, looking out for stains and crumbling plaster, which is a sure sign of penetrating damp. If the roof is leaking, you might notice small damp patches along the upstairs ceilings or faint lines that were caused by water; these are signs that dampness is present and we are always ready to assist. We cover London and surrounding counties, providing a reliable service for UK homeowners.
- Musky odour – When the air is very moist, you may notice that your house smells musky; moisture in the air causes mould to settle then spores become airborne and that is a health hazard. Check all rooms especially the bathroom and spare bedroom, if you have one; this is not something to ignore, as your family’s health is at risk. If you do find signs of rising or penetrating damp, call us on 020 8528 3864 and arrange for one of our qualified surveyors to inspect the property and recommend penetrating damp repair.
- Peeling paint/wallpaper – When dampness is present, it can cause wallpaper and paint to peel away from the wall and this needs to be investigated before too much damage is caused. Our surveyor can identify the cause of damp and recommend remedial work to resolve the issue.
- Condensation on the windows – Bubbling paint on window frames is the result of condensation, where different temperatures meet on a single pane of glass. Always wipe away condensation with a dry cloth, as it will damage timber window sills and frames. After a hot bath or showers, always open the windows to allow the moisture to escape and keep the bathroom door closed until the moisture is no longer present.
- Rotting timber – Window and door frames, skirting and architrave should all be closely inspected for signs of woodworm, wet or dry rot. If you do have condensation of the windows, it should be removed, as the water runs down the glass and onto the window sill. Oil-based paint will protect the wood but if there are signs of timber decay, call London Damp Specialists and book a homebuyer damp survey. If the windows have reached a stage where the frames are in bad shape, consider double glazing, which eliminates condensation and save you energy.
Should you discover any of the above signs of damp, call London Damp Specialists on 020 8528 3864 and book a damp survey. We issue the homeowner with a detailed survey report within 24 hours of the survey completion, plus we provide a written quotation for recommended services.
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.
