Speak to a Specialist
Speak to a Specialist
Clapham North · SW4, SW9

Damp Survey Clapham North: Damp, Mould and Water Damage Assessment

The Assessment (what many people call a damp survey) is one non-destructive visit that finds the cause of damp, mould or a hidden leak across Clapham North and the surrounding area, with a clear, insurance-ready report.

★★★★★ 5.0 from 22 Google reviews
Quick answer: If you have damp, mould or a suspected water leak at a property in Clapham North, your first visit is a Damp, Mould and Water Damage Assessment. Our specialists carry out a non-destructive investigation to find the root cause, then give you a written report with photographs and a clear plan to fix it. Your report follows within 3 to 5 working days of the visit. We confirm the price on a written quote once we understand the problem. Call 020 3051 8478.

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, Mould and Water Damage Assessment

One visit that finds the cause of damp, mould or water damage, and tells rising damp, penetrating damp and condensation apart. About the Assessment →

Mould Treatment

Treat black mould and deal with the moisture source behind it, so it does not keep coming back. Mould treatment →

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 visit 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

Excellent
Rated 5.0 / 5 based on 22 reviews on
Tip: If a damp patch keeps coming back after redecorating, it is almost always a symptom, not the problem. An assessment that finds the source first saves paying for the same repair twice.

Request an Assessment in Clapham North

Call 020 3051 8478 or send us your details and we will agree a date with you. We work with homeowners, landlords and property managers across Clapham North.

Frequently asked questions

How much does a Damp, Mould and Water Damage Assessment in Clapham North cost?
We confirm the price on a written quote once we understand the problem. Your first visit is a Damp, Mould and Water Damage Assessment, which includes the non-destructive investigation and an insurance-ready written report with photographs. If leak detection is needed, we quote for it separately before any work starts.
Do you cover the whole of Clapham North?
Yes. We visit 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 assessment identifies which type you have using moisture readings and thermal imaging.
Do you provide reports for insurance claims?
Yes. Every assessment comes with a clear written report including the cause, photographic evidence and recommendations, formatted for insurers and managing agents. Your report follows within 3 to 5 working days of the visit.

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 your Clapham North property and fix the moisture source behind it. Mould removal in Clapham North →

See what you get before you speak to us: read a real report from start to finish.