London Weather and How Damp Impacts Houses

Those who are old enough to have grown up children will remember those blazing summers that seemed to be never-ending; fast forward and we never see the sun; it might be global warming or even geo-engineering! Whatever the reason, the cold, wet weather seems to be parked right over the British Isles and aside from making us all feel miserable, the damp atmosphere enables moisture and mould to invade buildings.

Rising damp

We have teams of damp proofing teams in London, and they are busy waterproofing basements and damp proofing homes. Rising damp is the number one issue we face; moisture that is drawn up from the ground and this usually due to a defective DPC membrane, usually in older properties and we can use a DPC injection to protect the house from rising damp.

Penetrating damp

Simply put, this is moisture entering the building by any means; it might be a leaking roof, or compromised brickwork, moisture moves through materials with a capillary action, penetrating masonry, mortar, timber and render. Signs include damp patches on walls or ceilings, a musky smell in the house is an indication of mould and mildew and we happen to specialise in dealing with penetrating damp proofing in London, using a range of treatments.

Basement waterproofing

Known as basement tanking, the wet weather is a serious threat to below-ground spaces and we have all the solutions, from water-resistant cement to cavity drainage systems, we can waterproof a basement, wine cellar or man-cave, and we guarantee our work for a full 30 years! London has more basements than any other UK city and in regions where clay is present, our services are in high demand.

Condensation

Excess moisture can form condensation on surfaces like glass and interior walls; if you notice a build-up of condensation on your windows, check to see if there is an airflow. Good ventilation will remove condensation, so open windows periodically; another way to deal with condensation is to heat the whole house; this might not be ideal if you are not using specific rooms, however, if you want to dry out the air, heating the house will do it. A few hours are all it takes and for what it costs, at least you are reducing the moisture content.

The importance of regular damp inspections

If there are areas of the house that are never used, you should inspect often, as once damp takes hold, damage is irreversible. We recommend inspecting the home every few weeks and open some windows upstairs and downstairs to let the humid air circulate.

Free damp survey

London Damp Specialists offer a free damp survey for London homeowners who suspect they have damp issues in their property; we provide a detailed report, plus we offer a quote for remedial and damp proofing work that we recommend.

Call us now on 020 7458 4864 and let the experts assess your London home for damp, mould and condensation.

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

A damp meter

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

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

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

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 Swab Test Kit

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

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.

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:

Book Survey

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:

Book Survey

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:

Book Survey