Damp, mould & leak services in London Colney
London Colney's housing spans converted Victorian asylum buildings at Napsbury Park, 1930s-60s semis and ex-council terraces near the high street, and newer estates around Colney Fields. Older conversions often hide dated flat roofs and poor cavity insulation, while riverside plots near the Colne face groundwater and surface flooding, making damp, condensation and leak problems common across the village.
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 London Colney we cover
We survey properties right across London Colney and its neighbourhoods, including:
- Napsbury Park
- Colney Heath
- Chiswell Green
- Park Street
- Frogmore
- Tyttenhanger
- Bricket Wood
- Smallford
- How Wood
- Colney Fields
- Riverside (River Colne)
- Willows Link
- Radlett Road
- Sopwell
Common damp problems in London Colney homes
Napsbury Park's converted period buildings
The listed former hospital blocks at Napsbury Park were converted into flats and townhouses in the 1990s, retaining original brickwork and slate roofs behind modern interiors. Rising damp in solid walls, failed lead flashing on complex rooflines and condensation in poorly ventilated bathrooms are frequent, with heritage restrictions often limiting straightforward external repairs.
Riverside properties near the River Colne
Homes close to the River Colne and the water meadows around Frogmore and Colney Heath sit on low-lying, waterlogged ground for parts of the year. Rising and penetrating damp through solid or poorly damp-proofed floors is common, and heavy rainfall periods increase the risk of surface water pooling against external walls, pushing moisture into ground floor rooms.
Post-war semis and ex-council terraces
Many 1930s to 1960s semis and terraced homes around Chiswell Green and Park Street were built with narrow cavity walls and single-skin extensions that predate modern insulation standards. Cold bridging at extension joints, blocked airbricks and ageing guttering commonly lead to black mould on external walls and condensation staining around windows during colder months.
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!
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…
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!
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.
Great experience with this company from start to finish. They were professional, knowledgeable, and explained everything clearly without any pressure. The work was carried out efficiently and to a high standard, and we’ve already noticed a big improvement. It’s reassuring to deal with a team that genuinely cares about doing the job properly. Highly recommend to anyone dealing with damp or mould issues.
Book a survey in London Colney
Call 020 3051 8478 or request a survey online. We work with homeowners, landlords and property managers across London Colney. Works are on a 50% upfront, 50% on completion basis.