Damp Proofing London
Widely recognised as one of the top damp companies in London.
- Fixed prices on all our work
- No deposit/payment until work is dry
- We will beat any reputable quote
- Rising damp treatment from £195+VAT per m²
Penetrating Damp Survey
Condensation is a widespread issue in buildings of all ages and types, creating an unsightly and unhealthy environment. As independent damp surveyors, we at London Damp Specialists are committed to addressing this problem with effective and lasting solutions.
Rising damp is a significant concern in many London properties, often leading to structural damage and health risks. As independent damp surveyors, we specialise in diagnosing and treating this issue, ensuring your home is safeguarded against its harmful effects.
The presence of rising damp can be detected through various indicators, such as wallpaper peeling, damage to plaster and skirting boards, and visible tide lines on walls. These signs suggest moisture ascending through the brickwork, a condition that necessitates expert intervention. Our team of independent damp surveyors conducts thorough surveys to accurately identify the extent of rising damp and then formulates a bespoke treatment strategy.
Our treatment methodology for rising damp is comprehensive and effective. The process begins with the removal of any damp-affected plaster, halting further deterioration. We then proceed with chemical injections to restore and enhance the damp proof course.
A crucial step involves applying a salt neutraliser to the walls, addressing the salts introduced by the damp. To ensure complete moisture resistance, we implement tanking solutions, applying a liquid coating that adheres to damp brickwork and forms a waterproof barrier. The final steps include applying a waterproof sand and cement interior render and finishing with a smooth skim coat plaster for a seamless appearance.
As independent damp surveyors, our focus extends beyond mere treatment; we aim to preserve the long-term health and structural integrity of your property. Our commitment to detail, combined with a deep understanding of damp-related issues, ensures that our clients receive a service that is both thorough and tailored to their specific needs. By entrusting us with your rising damp concerns, you are choosing a partner dedicated to the highest standards of care and expertise in the field of damp surveying and treatment.
Request a SurveyRising Damp Survey
Rising damp is a significant concern in many London properties, often leading to structural damage and health risks. As independent damp surveyors, we specialise in diagnosing and treating this issue, ensuring your home is safeguarded against its harmful effects.
The presence of rising damp can be detected through various indicators, such as wallpaper peeling, damage to plaster and skirting boards, and visible tide lines on walls. These signs suggest moisture ascending through the brickwork, a condition that necessitates expert intervention. Our team of independent damp surveyors conducts thorough surveys to accurately identify the extent of rising damp and then formulates a bespoke treatment strategy.
Our treatment methodology for rising damp is comprehensive and effective. The process begins with the removal of any damp-affected plaster, halting further deterioration. We then proceed with chemical injections to restore and enhance the damp proof course.
A crucial step involves applying a salt neutraliser to the walls, addressing the salts introduced by the damp. To ensure complete moisture resistance, we implement tanking solutions, applying a liquid coating that adheres to damp brickwork and forms a waterproof barrier. The final steps include applying a waterproof sand and cement interior render and finishing with a smooth skim coat plaster for a seamless appearance.
As independent damp surveyors, our focus extends beyond mere treatment; we aim to preserve the long-term health and structural integrity of your property. Our commitment to detail, combined with a deep understanding of damp-related issues, ensures that our clients receive a service that is both thorough and tailored to their specific needs. By entrusting us with your rising damp concerns, you are choosing a partner dedicated to the highest standards of care and expertise in the field of damp surveying and treatment.
Request a Survey
London Damp Specialists give a 30 year guarantee on all our services.
For an additional cost we can also provide a 10 year insurance backed guarantee from a third party insurance company.
Our guarantees are registered to the property itself so if you decide to sell your property there no need to transfer the guarantee across to the new owners.
What is covered in our 30 year guarantee?
The 30 year guarantee that we provide our customers covers all of our services.
There is no fine print or grey areas in the London Damp Specialist guarantee. The areas we treat will be covered against damp for 30 years – so if damp arises in the same area then it will be repaired at zero cost to the customer.
Please note: For an additional cost we can also provide a 10 year insurance backed guarantee from a third party insurance company named GPI.
Often the skirting boards do not come off intact due to the damp so we usually recommend new skirting. We will leave your property ready for painting and making good, including fitting new skirting boards, but do not offer this service ourselves. We can put you in touch with someone to refit new skirting and to do the painting.
The cost of damp proofing varies according to a number of factors. These include the type of damp (rising or penetrating), the extent of the problem, the size of your property and many more. Visit our damp proofing costs page for more information.
Yes. All our employees have been home vetted and are CRB/DBS check ready.
We will remove and dispose of all the waste and rubble, leaving your property as we found it.
There is no fine print or grey areas in the London Damp Specialist guarantee. The areas we treat will be covered against damp for 30 years – so if damp arises in the same area then it will be repaired at zero cost to the customer.
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Helpful Guides from our Damp Proofing Experts
Request a Callback
For an in-depth survey of your property or simply to talk to one of our damp proofing specialists in London or South East England.
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Whatever its purpose, a basement needs to stay dry to remain usable and safe. When originally built, the cellar should have been contained within an external basement tanking system to keep damp away. However, being underground, the walls will be naturally susceptible to damp and water ingress is a high possibility, especially over time.
As damp specialists we offer a variety of basement tanking options to make any basement waterproof, and to prevent any damp. We can fit a Cavity Drainage Membrane to effectively drain any water away from the basement; sump pumps will move water away from the property and to a storm drain; a cemented multi-coat render acts as a barrier, sealing the basement from the inside walls and preventing any water penetrating. Basement tanking is an effective method of damp proofing your home.
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- Removing any damp or damaged plaster
- Adding a salt neutraliser to walls to dissolve salts present from damp penetration
- Applying a tanking system (as mentioned above)
- Adding a waterproof sand and cement interior render
- Finishing with a smooth skim coat plaster
There are other options for cellar tanking that could involve:
- Fitting a cavity drainage membrane
- Adding plasterboard or plaster directly over the membrane
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Damp Repairs & Treatments In London
The geology of many London areas consists of clay materials and many areas are susceptible to flooding. These two aspects means that many basement flats and cellars can require damp proofing or basement tanking to keep them habitable.
If your home shows signs of damp you already know how unsightly the problem can become. As well as affecting the value of your home, damp frequently gives rise to mould which in turn can affect your respiratory and immune system.
Don’t despair, with prompt diagnosis and treatment including damp proof course (DPC) injections the underlying causes can be addressed and structural damage repaired.
Damp Repairs & Treatments In London
The geology of many London areas consists of clay materials and many areas are susceptible to flooding. These two aspects means that many basement flats and cellars can require damp proofing or basement tanking to keep them habitable.
If your home shows signs of damp you already know how unsightly the problem can become. As well as affecting the value of your home, damp frequently gives rise to mould which in turn can affect your respiratory and immune system.
Don’t despair, with prompt diagnosis and treatment including damp proof course (DPC) injections the underlying causes can be addressed and structural damage repaired.
About London’s Damp Proofing & Repairs Specialists
London Damp Specialists Ltd was established in 1981 to offer damp proofing treatments, removal and surveys for homeowners in London.
London Damp Specialists remains a family-run damp company offering a full range of corrective home damp treatments, including rising damp treatment, penetrating damp treatment, cellar/basement tanking solutions, and homebuyer damp surveys. We are now regarded as one of London’s leading experts in damp and timber conservation.
At London Damp Specialists our prices are very competitive and our damp experts strive to work quickly to remove and treat damp issues from your property with the least amount of disturbance.
Our damp experts provide the full range of damp treatments including DPC injections in London and throughout the M25. For the past several years, our team of experts has been offering damp removal treatments and surveys in areas such as Kensington, Chelsea, Fulham, Camden, Richmond, Wimbledon, Dulwich, Stratford, Islington and Finchley.
"Great experience, Paul attended at less than 24 hours notice to re-render an external wall that had been abandoned by another builder. He did an excellent job quickly. Highly recommended."
Customer Testimonials
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Trust London Damp
We are a Chartered Building Company, Full members of the BWPDA (British Wood Preserving & Damp Proofing Association), PCA (Property Care Association), CHAS and the Guarantee Protection Trust.
Damp Specialist London 5 Step Process
01
Initial consultation
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02
Site visit
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03
No obligation quote
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04
Work carried out
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05
Payment
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Damp Specialist London 5 Step Process
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01
Initial consultation
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02
Site visit
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03
No obligation quote
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04
Work carried out
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05
Payment
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Damp Repair & Proofing Services
30 year guarantee
We also offer a 10 year insurance backed guarantee.
Free damp survey
No obligation damp survey with detailed reports and quotes.
Experienced & qualified
Team qualified to industry standards (CSRT & CSSW)
Fully insured
Public liability limit of indemnity £5 million
Experienced & qualified
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30 year guarantee
We also offer a 10 year insurance backed guarantee.
Free damp survey
No obligation damp survey with detailed reports and quotes.
Experienced & qualified
Team qualified to industry standards (CSRT & CSSW)
Fully insured
Public liability limit of indemnity £5 million
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.
The survey fee will be deducted from the cost of any recommended repairs.
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.
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: