Leak to dry to treated, one company in Northwood
Northwood's housing ranges from large Edwardian and 1930s detached and mock-Tudor houses along Green Lane and Murray Road to mansion blocks near the Underground station and post-war semis towards Northwood Hills. Solid brick construction, bay windows, converted lofts and dense planting around older gardens all restrict airflow and trap moisture, giving mould a steady foothold in walls, ceilings and window reveals.
Mould Treatment
Treat and prevent the mould that follows water damage, dealing with the moisture source first. Mould treatment →
Damp Investigation
Tell rising damp, penetrating damp and condensation apart, so the right repair is done once. Damp investigation →
Leak Detection
Trace hidden water leaks without unnecessary damage using thermal, acoustic and tracer-gas methods. Leak detection →
Structural Drying
Dry walls, floors and voids after a leak or flood with monitored dehumidifiers, to completion. Structural drying →
Areas of Northwood we cover
We treat mould right across Northwood and its neighbourhoods, including:
- Northwood Hills
- Moor Park
- Eastbury
- Pinner
- Pinner Green
- Ruislip
- Rickmansworth
- Batchworth
- Sandy Lodge
- Copse Wood
- Mount Vernon
- Ducks Hill
- Harefield
- Croxley Green
Common causes of mould in Northwood homes
Bay windows and solid walls in Edwardian and 1930s houses
Many Northwood properties near Gate Road and Green Lane are solid-wall Edwardian or 1930s builds with deep bay windows and original timber frames. Without cavity insulation, cold spots form around the glazing and reveals, and ageing pointing or worn sealant lets rain track through the brickwork. The result is recurring black mould on window surrounds and the adjoining ceiling corners, often mistaken for a glazing fault rather than penetrating damp.
Mock-Tudor gables and converted lofts trapping condensation
The mock-Tudor detached homes typical of Moor Park and Eastbury frequently have loft conversions and dormer bedrooms tucked under sloping timber-framed roofs. These spaces heat and cool quickly, and with limited roof ventilation, warm moist air condenses against cold rafters and boarding. Mould then develops on sloped ceilings, in wardrobe corners and behind beds pushed against external walls, spreading unnoticed until decorating reveals the extent.
Bathrooms and flats with weak extraction in older conversions
Several period houses near the station and along Chestnut Avenue have been split into flats, often with bathrooms built into former box rooms lacking proper external extraction. Steam has nowhere to escape, so mould collects on tiled reveals, ceiling corners and behind bathroom furniture. In shared or rented properties this is compounded by inconsistent heating between units, letting damp settle in whichever room is used least.
What our customers say
I recently used a damp and mould specialist company and was extremely impressed with the service from start to finish. From the initial survey, they were knowledgeable, thorough, and took the time to clearly explain the cause of the issue rather than just treating the symptoms.
Tarik Barak, via Google
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
Mould problem in Northwood?
Call 020 3051 8478 or book a mould survey online. We remove mould and fix the cause for homeowners, landlords and managing agents across Northwood.