Essential Damp Inspection Tips for Homeowners

Home ownership brings with it many responsibilities and here in the UK, the wet climate can seriously damage a building. Penetrating and rising damp are the main culprits, with mould and mildew attacking timber and as the property owner, damp inspections are necessary to identify moisture and timber decay issues.

Here are a few damp inspection tips to help you manage your home.

  • Windows & doors – Check all timber frames, looking for mould and mildew that thrive in damp conditions. Condensation is not a good sign, when moist air hits a warm surface and turns from vapour to liquid water. If you see mould, call London Damp Specialists on 020 8528 3864 or fill in our online form and let the experts assess the situation; our professional teams have the know-how and resources to deal with any damp issue. Check for tiny holes in the wood, a sure sign of woodworm and any signs of timber rot.
  • Ceilings and walls – Scan all walls looking for damp patches, especially at floor and ceiling height, you might notice thin lines, this is a sign of water being present, perhaps not now, but at some time in the past. Look for crumbling plaster, as moisture causes plaster and cement to break up. Peeling wallpaper is another sign that moisture is present, which might be accompanied by a musky odour. We offer a service to test the moisture level in walls, taking up to 10 separate samples and analysing them for moisture content.
  • Inspect the exterior building line – This is where damp can get a foothold; inferior brickwork and mortar leads to rising damp and the sooner you call in a damp proof specialist, the better. A building should have a damp proof course (DPC), a bitumen material that is laid between layers of brick to prevent moisture from rising, if the DPC is damaged, this could see the onset of rising damp.
  • Inspect the guttering – Blocked guttering results in rainwater seeping down the exterior walls, which will cause issues. Clean out all guttering to ensure excess rainwater has an escape route and do check that the downpipes are not blocked. Also check the roof for missing or broken tiles, as this is a sure way to let water into the building and that is a recipe for disaster!

If you are at all concerned about damp in your home, the best solution is to order an independent damp survey from London Damp Specialists, a family-owned business with a fantastic reputation in London and the Home Counties.

Along with the survey report, you will receive a quote for any recommended work the surveyor might deem necessary.

If you are planning to make an offer on a house, order a homebuyer damp survey and find out if there are any moisture or damp issues. Give us a call on 020 8528 3864 or fill in the online survey form and take the first step to surveying the property before you make a commitment.

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.

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:

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:

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: