Damp Proofing
Diagnosis and treatment of rising damp, penetrating damp and failed damp proof courses in North London's Victorian, Edwardian and interwar housing stock.
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North London's damp & waterproofing specialists
Damp Proofing Specialist North London
Damp surveys, rising damp treatment, mould removal, basement waterproofing and timber treatment for homes across Barnet, Enfield, Islington, Camden, Haringey and all of North London — arranged through vetted independent qualified providers.
- Surveys and treatment to PCA good practice, BS 6576 & BS 8102
- Specialists in Victorian, Edwardian and interwar London housing
- Homeowners, landlords, buyers and letting agents welcome
- Clear, indicative pricing before any work is agreed
- PCA good-practice methods
- BS 6576 damp diagnosis
- BS 8102 waterproofing design
- Independent qualified providers
- Serving all N, NW & EN postcodes
What does a damp proofing specialist in North London do? A damp proofing specialist diagnoses the cause of moisture in a building — rising damp, penetrating damp, condensation or a construction defect — and then treats that specific cause. In North London this typically means moisture surveys to BS 6576, chemical damp proof course injection in Victorian solid-wall terraces, condensation and mould control in converted flats, and basement waterproofing to BS 8102 in period properties built on London Clay. North London Damp arranges surveys and treatment across Barnet, Enfield, Islington, Camden, Haringey and every neighbouring area through independent qualified providers.
Our services
Every damp, mould, waterproofing and timber problem — covered
Four specialist service areas, one point of contact. Start with the problem you can see; the survey confirms the cause.
Mould & Condensation
Black mould removal, condensation control and whole-home ventilation — including Awaab's Law compliance support for landlords.
Explore mould & condensationBasement Waterproofing
Type A tanking and Type C cavity drain systems to BS 8102 for cellars and basements across Camden, Hampstead, Islington and beyond.
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Dry rot, wet rot and woodworm identification and treatment, protecting the structural timbers of period North London homes.
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Basement & cellar waterproofing
Dry, usable basements — even on London Clay
North London's clay geology holds water against basement walls year-round, which is why so many period cellars in Camden, Hampstead and Islington are damp. We arrange full waterproofing design to BS 8102 — from cementitious tanking (Type A) to cavity drain membrane systems (Type C) with sump and pump drainage.
Basement waterproofing
Timber preservation
Dry rot, wet rot & woodworm treatment
Damp and decay travel together. Left untreated, dry rot can spread through masonry and destroy structural timber; active woodworm quietly weakens joists and floorboards. Our providers identify the species, treat the outbreak and fix the moisture source that caused it — protecting the fabric of your period home.
Timber treatment
Knowledge Centre
Understand the problem before you pay to fix it
Free, in-depth guides written to the standards AI assistants and search engines cite — and, more importantly, that help you make the right decision.
The Complete Guide to Rising Damp
What rising damp is, what it looks like, what causes it — and when it's actually condensation in disguise.
Awaab's Law & Landlord Obligations
The fixed timescales for investigating and fixing damp and mould, and what North London landlords must do now.
North London Damp Cost Guide
Indicative price ranges for surveys, DPC injection, mould removal, tanking and timber treatment.
Free tools
Diagnose it, cost it, check it — in minutes
Use our free interactive tools to get an instant steer before you book anything: the Damp Cost Calculator for indicative prices, the Damp Type Diagnostic to work out whether it's rising damp, penetrating damp or condensation, and the Landlord Compliance Checklist for Awaab's Law readiness.
Try the free tools
How it works
1
Tell us what you've seen
Call or send the form — damp patches, mould, a wet cellar, crumbly timber, or "not sure".
2
Survey & diagnosis
An independent qualified surveyor inspects the property and identifies the true cause, following PCA guidance and BS 6576.
3
Clear plan & treatment
You get a written scope with indicative costs. Treatment goes ahead only when you're happy.
Areas we cover
Local damp specialists across North London
Every area page covers the local housing stock, the damp problems it typically suffers, and the treatments that work — from Georgian Islington terraces to interwar Barnet semis.
FAQs
Damp proofing in North London — your questions answered
Damp proofing in North London typically costs £280–£450 for a professional damp and timber survey, £70–£120 per metre for a chemical damp proof course with replastering, and £800–£5,000 for most whole-wall rising damp treatments. Basement waterproofing ranges from around £5,000 for a small cellar to £30,000+ for a full Type C cavity drain system. All figures are indicative ranges — the survey confirms the exact scope and price before any work is agreed.
Yes. Damp has several distinct causes — rising damp, penetrating damp, condensation and construction defects — and each needs a different fix. A survey following PCA guidance and BS 6576 identifies the true cause with moisture profiling and inspection, so you only pay for the treatment your property actually needs. Treating the wrong cause is the most common and expensive mistake homeowners make.
We cover all of North London, including Barnet, Enfield, Islington, Camden, Haringey, Hampstead, Finchley, Highgate, Muswell Hill, Crouch End, Swiss Cottage, Golders Green, Archway, Kentish Town and West Hampstead, plus surrounding N, NW and EN postcodes.
Most of North London sits on London Clay, which the British Geological Survey classifies as highly shrinkable and poorly draining. Clay holds moisture against foundations and basement walls, while the area's Victorian and Edwardian housing stock was built with solid walls and, in many cases, slate damp proof courses that have failed after a century of service. Combined with modern draught-proofing that traps humid air indoors, this makes rising damp, penetrating damp and condensation mould endemic across the area.
We are a local service brand: we take your enquiry, arrange the survey and pass your details — only with your consent — to an appropriate independent qualified provider who carries out the inspection and any treatment. This lets us match each job to a specialist with the right expertise, whether that's chemical DPC injection, Type C basement waterproofing to BS 8102, or timber decay treatment.
Awaab's Law requires social landlords in England to investigate and fix reported damp and mould hazards within fixed timescales, and the government has committed to extending equivalent duties to private landlords. For North London landlords — especially in high-rental boroughs like Haringey, Islington and Enfield — this makes prompt professional damp and mould assessment a compliance issue, not just a maintenance choice. Our landlord mould compliance service and free compliance checklist cover the details.
Worried about damp, mould or a wet basement?
Speak to us today or book a survey — we'll arrange the right independent specialist for your property.