Damp, mould & leak services in Marylebone
Marylebone's housing stock is dominated by Georgian and Victorian terraces, stucco-fronted mansion blocks and converted townhouses, many subdivided into flats during the mid-twentieth century. Original lime-mortar construction, ageing drainage infrastructure and poorly adapted basement conversions create persistent vulnerabilities to penetrating damp, rising damp and internal condensation throughout the area.
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 Marylebone we cover
We survey properties right across Marylebone and its neighbourhoods, including:
- Marylebone Village
- Portman Estate
- Fitzrovia
- Regent's Park
- Lisson Grove
- St John's Wood
- Baker Street
- Dorset Square
- Paddington
- Mayfair North
- Edgware Road
- Cavendish Square
- Marylebone High Street
Common damp problems in Marylebone homes
Penetrating Damp in Georgian and Victorian Terraces
Marylebone's Georgian terraces around Portman Estate and Dorset Square were built using breathable lime mortar and soft London stock brick. Later repointing with modern cement mortar traps moisture within the wall fabric, leading to penetrating damp that appears as tide marks, staining and spalling plasterwork on interior walls, particularly on north-facing elevations exposed to prevailing wind-driven rain.
Condensation and Mould in Mansion Block Conversions
The large Victorian and Edwardian mansion blocks along Marylebone Road and around Cavendish Square were subdivided into flats with little consideration for ventilation. Thermal bridging at original solid stone lintels and bay window returns creates cold spots where condensation forms readily, leading to persistent black mould growth in corners, behind fitted furniture and inside built-in wardrobes.
Hidden Leaks in Basement and Lower-Ground Conversions
Basement and lower-ground floor conversions are widespread in Marylebone's townhouses, especially near Lisson Grove and the streets north of Marylebone High Street. Tanking systems installed during conversion frequently fail at wall-to-floor junctions and around service penetrations. Water ingress can remain hidden beneath screed or behind dry-lined walls for extended periods before moisture damage becomes visible.
What our customers say
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
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
Book a survey in Marylebone
Call 020 3051 8478 or request a survey online. We work with homeowners, landlords and property managers across Marylebone. Works are on a 50% upfront, 50% on completion basis.