From rising damp in a Victorian terrace to a fully waterproofed basement conversion, Advanced Damp survey, design and install to BS 8102 across London and the Home Counties. Every job starts with a proper survey, because the wrong treatment costs more than the right one.
Prefer to talk it through? Call 0300 373 7251 and speak directly to a specialist. No obligation.
Damp patches, black mould, peeling paint or that musty smell that will not go away. We find the cause, explain it in plain English and fix it with a written guarantee.
Damp walls, standing water, a musty cellar or a conversion you want to make habitable. We survey, design and install basement waterproofing to BS 8102, with Newton cavity drain membranes, sumps and cementitious tanking.
Design-stage input, BS 8102 compliant specifications and installation for basements, retaining walls and underground structures. Type A, B and C systems from a Newton certified team.
From a damp patch in a Victorian terrace to the waterproofing design for a new basement, every job gets the same approach: diagnose properly, specify clearly, install to standard.
Full design and installation to BS 8102 for basements, cellars and vaults. Type A barrier, Type B structural and Type C cavity drain systems for conversions, new builds and remedial work.
Basement waterproofing →Newton certified installation of cavity drain membrane systems with sumps, pumps and maintainable drainage. The modern standard for keeping below-ground spaces permanently dry.
Cavity drain systems →Rising damp, penetrating damp and condensation diagnosed and treated. Chemical DPC injection, replastering with salt-inhibiting render and guaranteed results in period and modern properties.
Damp proofing services →Cementitious tanking systems that turn wet cellars into dry, usable space. Properly prepared substrates, correct products and workmanship backed by written guarantees.
Basement tanking →Black mould is a symptom. We identify whether the cause is ventilation, insulation or an underlying damp problem, then fix the source so the mould does not come back.
Condensation solutions →Professional surveys with moisture profiling, salts analysis and thermal imaging where needed. You get a written report with the cause, the fix and the cost.
Book a survey →Answer six quick questions and our free checker will tell you the most likely cause. No email needed.
A structured, assessment-led process. Treatment is never recommended before the cause is established.
A qualified specialist inspects the property, assessing construction type, ground levels, moisture patterns and structural factors.
Moisture profiling, salts analysis and thermal imaging where needed identify the root cause, not just the visible symptoms.
You receive a written report setting out the recommended system, whether that is damp proofing, tanking or a cavity drain membrane.
Trained technicians install to manufacturer specification and recognised best practice, backed by a written guarantee.
Or call 0300 373 7251 for free advice before you book. No obligation.
Real basements, cellars and vaults we have surveyed, designed and waterproofed across London and the Home Counties.
A new basement waterproofed to BS 8102 with a Newton cavity drain system.
A damp lower ground floor vault turned into a dry, usable pantry.
Water ingress through a block and beam soffit stopped and the room made usable.
Failed tanking and lintel decay put right with a maintainable system.
Damp and water ingress are two of the most misdiagnosed problems in UK buildings, and the wrong treatment costs more than the right one. That is why our surveys come before any recommendation, and why our team is trained to the standards the industry actually recognises.
At Advanced Damp, we specialise in structural waterproofing, below-ground protection and accurate moisture diagnosis across London and the South of England. From basement waterproofing and retaining wall protection to complex damp investigations, our work is designed around long-term performance, not short-term cosmetic fixes.
We are proud to be a member of the Federation of Damp, a mark of quality that ensures every project is carried out using proven, best-practice methods with a focus on delivering effective, reliable and long-lasting results for our clients.
We are also certified installers of Newton Waterproofing Systems, one of the UK's most respected names in structural waterproofing. From basement conversions and new builds to remedial waterproofing, our team is fully trained to install Newton's advanced cavity drain membranes and liquid waterproofing products with precision and care.
Whether you are a homeowner dealing with damp in your living room or a property manager responsible for a portfolio of buildings, we have solutions tailored to your needs.
Protect your property's value, improve living conditions and prevent costly repairs with guaranteed damp and waterproofing work.
Fast, reliable service to keep tenants safe and properties in good condition, with clear written reports for your records.
Large-scale damp proofing and waterproofing for offices, warehouses and public buildings, from survey to specification to installation.
Verified reviews from Google and Trustpilot, copied word for word.
"I had two other damp surveys on my home and they were only using a basic meter. Matt was far more thorough, a real professional. I'm so grateful to have dealt with someone who actually understood the problem."
Michael John, Google"Lionel the surveyor arrived on time and was very courteous and thorough. He discussed everything that needed doing and was able to reassure us during a very stressful time. He explained everything clearly, took the stress out of it, and sent a full report including photos. I would absolutely recommend Advanced Damp."
Jo Windsor, Trustpilot"We had damp proofing work carried out recently and I'm really pleased. The team were friendly, professional and explained everything clearly before starting. Work was done efficiently and the property left clean and tidy. The issue now seems completely resolved."
Charlotte, TrustpilotLondon homes have their own damp problems. Victorian and Edwardian terraces have solid walls with no cavity, so rain driven through worn brickwork and pointing shows up as penetrating damp. Original slate damp proof courses break down with age, and raised garden levels or rendered plinths bridge them, which leads to rising damp in ground floor rooms. Flats and conversions often have poor ventilation, and condensation and black mould follow every winter.
Below ground, much of London sits on London Clay, which holds water against cellar and basement walls. That is why lower ground floors, cellars and vaults across the city take on water, and why basement conversions need a waterproofing system designed to BS 8102 rather than a coat of paint or render.
Every job starts with a survey by a CSSW and CSRT trained specialist, who finds the cause before anything is recommended. From our office at 45 Fitzroy Street, W1, we cover every London borough. Our High Wycombe office covers Buckinghamshire, Berkshire and Hertfordshire. If you are weighing up the work, our guides to damp proofing costs, damp survey costs and basement waterproofing costs explain what affects the price. For mould, see our mould removal service.
Local damp and waterproofing specialists covering London and the South East from our W1 office, plus the Home Counties from High Wycombe.
Damp proofing in London
Basement waterproofing
Home Counties
Book a professional survey and get a written report with the diagnosis, the recommended fix and clear costs. No pressure, no guesswork.
✓ No obligation survey