Basement Tanking
London Damp Specialists is a waterproofing firm that provides professional damp proofing, cellar and basement draining services in London.
Homes in the London area, in particular, have many types of cellars and basements depending upon their location and use.
Daylight basement
Is located on a slope, where part of the floor is above ground with a door to the outside. Part of the floor lower than the ground level is the true basement space and is attached with ventilated windows to prevent damp problems.
Look-out basement
Is constructed even on a flat area where the basement walls extend above the ground level with the windows above grade.
Walk-up basement
Is one that has an exterior entrance through a stairwell with basement doors to stop rainwater from collecting and causing water damage.
A Fully underground cellar
Is a room below ground level in a house which is used for storing wine or household items. It has to remain at constant cooling with small forms of ventilation.
Underground crawl space
Is a type of basement where one cannot stand upright but crawl on the soil below. It is mainly used for storage and rat-proofing purposes.
Watch this video to find out more!
Water Proofing Company London
Here at London Damp Specialists Ltd we are experts in all areas of damp and how to avoid it. Get in touch with us today to discuss your requirements and let us visit your property or business to analyse the problem and come up with a suitable remedy. Call our experienced team today on 020 7458 4864.
Which Basement or Cellar Tanking System?
All cellar tanking and basement waterproofing systems are created by removing of all damaged plasterwork and damaged masonry, stripping your basement back to its original building material. Then the foundation layer is cleaned and prepared for the tanking process.
London Damp Specialists offers a choice of two cellar / basement waterproofing systems:
- Cavity drainage sump and pump system
- Tanking and rendering system
Cavity Drainage Sump And Pump
If your cellar is not going to remain dry through the use of a waterproof barrier (tanking and rendering system), then cavity drainage systems are the most robust solution as they allow water to penetrate in a strictly managed and controlled way.
Textured membrane is fitted to the basement’s walls, floor and ceiling then the entire construction is covered with specialist plasterboard, insulation and screed. A hidden pump is installed to manage and direct water out of the system into the normal water table or wastewater source.
Cavity drainage systems will leave you with a completely dry inner room which you can finish and decorate exactly as you please from kitchens, bathrooms, studies, bedrooms, lounges and snugs. This amazing system means the cavity drainage approach gives you excellent results and is simple to maintain and repair.
No matter the condition of your basement here at London Damp Specialists we of waterproof basements in in manner of homes.
Basement Tanking London and rendering system
Cementitious tanking slurry is an easy to use, highly effective tanking method. As a cement-based powder which, when applied to the walls, ceiling and floor will then bond with the underlying surface to give a waterproof barrier. We then finished off the tanking with a specialist plaster to complete waterproofing.
A cemented multi-coat render system has a high performance in resisting the water seepage through the decayed wall or mortar joints. It is designed for applying directly to the brickwork that is uneven and has high level of moisture. The render also has an adhesive coat that sticks to the cracks resulting in good texture. Cemented multi-coat render applied on the external wall acts as weather resistant repelling damp infestations and growth of moulds and suitable for most types of brickwork or block work.
Customer Testimonials
As time is of the essence, we would like to get to work as soon as possible; of course, we are happy to fit in with the customer’s schedule. If you are unable to leave work, we are happy to do the work with no one at home; all our employees are CRB/DBS checked.
While some insurance providers might offer that, it would be best to check with your carrier. They will be able to provide you with a more accurate answer on this matter.
At London Damp Specialists, we have a working relationship with the top insurer GPI and you can take out a policy that covers damage caused by damp.
We do not require payment until the work is dry and you are satisfied with the service.
Yes, at London Damp Specialists, we treat all forms of timber rot including woodworm.
We offer a range of survey services; check our homebuyer survey page for a list of services and prices. We are competitively priced and we will match any quote from a reputable company.
Our 5 Step Process
01
Initial Consultation
Tell us about your damp issue and we’ll guide you on next steps. It's an opportunity for you to ask questions and gather information.
02
Site Visit
Next, we visit your property to find the root cause of the issue. We’ll also assess the local environment, and take measurements or observations.
03
No Obligation Quote
Then we’ll send a detailed estimate of the costs involved, with no hidden extras, and provided to you without any commitment. You can review the financial aspect before making any decisions.
04
Work Carried Out
Our expert team carries out the work as planned, to the agreed timeline and quality standards, with minimum disruption to you.
05
Payment
The last step is payment, once the work’s complete, your home is dry and you’re satisfied with the results.
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 L1 & L2
- 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
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.



