Damp, mould & leak services in Merton
Merton's housing stock spans late-Victorian and Edwardian terraces in Wimbledon and Colliers Wood, interwar semi-detached properties across Raynes Park and Morden, and post-war council-built blocks in Mitcham and Pollards Hill. This varied mix, combined with Merton's clay-heavy subsoil and ageing drainage infrastructure, creates persistent conditions for damp, mould, and water ingress.
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 Merton we cover
We survey properties right across Merton and its neighbourhoods, including:
- Wimbledon
- Mitcham
- Morden
- Raynes Park
- Colliers Wood
- Tooting
- Wimbledon Chase
- South Wimbledon
- Motspur Park
- Cannon Hill
- Lavender Fields
- Pollards Hill
- Lower Morden
- Figge's Marsh
Common damp problems in Merton homes
Rising and Penetrating Damp in Victorian Terraces
The late-Victorian terraced streets of Wimbledon, Colliers Wood, and South Wimbledon frequently suffer from failing or absent damp-proof courses. Original slate DPCs deteriorate over time, allowing ground moisture to wick upward through solid brick walls. Repointed facades using modern cement mortars can also trap moisture and accelerate penetrating damp, particularly on exposed north-facing elevations.
Condensation Mould in Interwar Semis and Flats
The interwar semi-detached properties common across Raynes Park, Morden, and Motspur Park were built with limited insulation and no mechanical ventilation. As residents upgrade glazing and draught-proof these homes, air circulation reduces significantly, causing condensation to accumulate on cold external walls and in poorly heated rooms such as bathrooms and rear extensions, resulting in persistent black mould growth.
Hidden Leaks in Post-War Council Blocks
Mitcham and Pollards Hill contain a significant proportion of post-war flat-roofed council blocks where flat roof membranes and communal pipework have aged considerably. Internal leaks from failing flat roofs, degraded stack pipes, and corroded copper supply pipes often remain hidden within concrete floor and ceiling voids for extended periods, leading to structural saturation and widespread mould before the source is identified.
What our customers say
Service was excellent! Explained the whole process thoroughly, arrived on time when carrying out the survey. The survey was detailed and exactly what I needed for my insurance. They returned to carry out the treatment the following week. 10/10 would highly recommend.
Sukru, 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
Really impressed with the whole experience. The surveyor did a proper, thorough job and didn't rush anything, they got to the root cause of the damp and explained it all clearly. Detailed, professional and reassuring from start to finish. Couldn't recommend them more highly.
Keiryn Raf, via Google
Book a survey in Merton
Call 020 3051 8478 or request a survey online. We work with homeowners, landlords and property managers across Merton. Works are on a 50% upfront, 50% on completion basis.