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Clapham North · SW4, SW9

Damp, Mould & Leak Specialists in Clapham North

Non-destructive damp surveys, hidden leak detection and mould investigation across Clapham North and the surrounding area, with clear, insurance-ready reports.

Call 020 3051 8478Request a survey
★★★★★ 4.9 from 19 Google reviews · trusted by Clapham North homeowners, landlords & property managers
Quick answer: If you have damp, mould or a suspected water leak at a property in Clapham North, our specialists carry out a non-destructive survey to find the root cause, then give you a written report and a clear plan to fix it. A full damp and mould survey is a fixed £500. Call 020 3051 8478.
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Damp, mould & leak services in Clapham North

Clapham North's housing stock is dominated by tall Victorian and Edwardian terraces, many carved up into flat conversions with shared roofs, single-glazed sash windows and lower-ground or basement units. Interwar mansion blocks sit alongside postwar council estates around Clapham Park. This mix of solid brick walls, ageing rainwater goods and below-grade living space makes penetrating damp, rising damp and condensation mould persistent problems.

Leak Detection

Trace hidden water leaks without damage using thermal, acoustic and tracer-gas methods. Leak detection →

Damp Investigation

Identify rising damp, penetrating damp and condensation, and tell them apart properly. Damp investigation →

Mould Inspection

Find the moisture source feeding the mould, not just treat the surface. Mould inspection →

Structural Drying

Dry out walls, floors and voids after a leak or flood, monitored to completion. Structural drying →

Areas of Clapham North we cover

We survey properties right across Clapham North and its neighbourhoods, including:

Common damp problems in Clapham North homes

Leaking parapets and flat roof extensions on Victorian terraces

Many Clapham North terraces have been extended to the rear with flat-roofed kitchens or loft conversions tucked behind original parapet walls. These junctions are common failure points, with worn felt, blocked box gutters and cracked parapet capping letting water track down into upper-floor bedrooms and party walls, often showing as staining well away from the actual entry point.

Rising and penetrating damp in solid brick conversions

Streets around Abbeville Village and Clapham Old Town are lined with solid-wall Victorian houses split into flats, built without cavities or modern damp-proof courses. Failed pointing, saturated solid walls and old external render trap moisture, while poorly ventilated ground-floor and lower-ground flats show tide-marked plaster and mould behind furniture pushed against external walls.

Condensation mould in postwar blocks near Clapham Park

The concrete-panel and system-built blocks around Clapham Park and Larkhall Park suffer from thermal bridging at window reveals and floor slabs, encouraging condensation in bathrooms and bedrooms. Combined with sealed-in double glazing and limited trickle ventilation, moisture has nowhere to escape, leading to recurring black mould on north-facing walls and inside built-in wardrobes.

What our customers say

★★★★★

Was lovely working with the team and they did a fantastic and quick job to get all the mould out of my bathroom. Very much looking forward to working with them on other projects around my house!! Thank you for everything and shout out to Karim for being so sweet!

Mariama, via Google

★★★★★

Omg what brilliant service, excellent the cleaner did a very good job was efficient he took his time and cleaned everything, highly recommend S. Bessim…

Susan Bessim, via Google

★★★★★

Amazing company! They responding very quickly. They have a low prices as well, not crazy quotes like from others. Job has been done very quickly and team was very professional. I will use them in the future if I needed. Thanks!

Patryk Gutowski, via Google

Tip: If a damp patch keeps coming back after redecorating, it is almost always a symptom, not the problem. A survey that finds the source first saves paying for the same repair twice.

Book a survey in Clapham North

Call 020 3051 8478 or request a survey online. We work with homeowners, landlords and property managers across Clapham North. Works are on a 50% upfront, 50% on completion basis.

Frequently asked questions

How much does a damp survey in Clapham North cost?
A damp and mould survey is a fixed £500, including the non-destructive investigation and an insurance-ready written report. Leak detection, if needed, is £800 to £1500 depending on scale.
Do you cover the whole of Clapham North?
Yes. We survey properties across Clapham North and the surrounding neighbourhoods and postcodes.
Can you tell the difference between condensation, rising and penetrating damp?
Yes, and it matters because the fix differs for each. Our survey identifies which type you have using moisture readings and thermal imaging.
Do you provide reports for insurance claims?
Yes. Every survey comes with a clear written report including the cause, photographic evidence and recommendations, formatted for insurers and managing agents.

More help in Clapham North

Leak detection

Trace a hidden water leak in Clapham North using thermal, acoustic and tracer gas methods, with minimal damage. Leak detection in Clapham North →

Structural drying

Dry walls, floors and voids in Clapham North after a leak or flood, monitored to completion. Structural drying in Clapham North →

Mould removal

Treat black mould in a Clapham North property and fix the moisture source behind it. Mould removal in Clapham North →