Highgate, Greater London
Condensation and mould ventilation fixes in Highgate
We find why the house is wet and fix the ventilation, rather than painting over mould. Covering Highgate and N6, NW3 and NW5.
- From £525 inc VAT per fan
- Free survey

Mould in a Highgate bedroom or bathroom is almost always a ventilation problem first.
Whether the property is in the middle of Highgate or one of the villages around it, the process is the same: a look at the building, a written price, then fitting and testing on the agreed day.
Condensation and mould fixes in Highgate at a glance
- Town
- Highgate, Greater London
- Postcode districts
- N6, NW3 and NW5
- Nearby
- Archway (1 mile), Belsize Park (1 mile) and Chalk Farm (2 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
Condensation and mould fixes for Highgate homes
Mould needs that damp surface to grow. Ventilation is usually the biggest part of the cure, but not the only part.
Survey and findings
Humidity and surface readings, existing fans flow-tested, and a written list of causes and fixes.
Fan upgrades
Weak or loft-vented fans replaced and ducted outside, with humidity control.
Guide prices in Highgate
| Work | Guide price |
|---|---|
| Continuous-running extract fan (dMEV) with humidity boost, flow tested (per fan) | £415–£725 inc VAT |
| Condensation and mould ventilation survey with written findings (per home) | £150–£270 inc VAT |
| New ducted fan to outside through the loft or ceiling (insulated duct, roof or soffit outlet) (per fan) | £525–£900 inc VAT |
Guide prices using London rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
Signs it is time to call us
- Water running down windows on cold mornings
- Musty smell in bedrooms or wardrobes
- Peeling paint or wallpaper in bathrooms
Rules that apply in England
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. Serious damp and mould is a hazard under the Housing Health and Safety Rating System, and social landlords now have fixed timescales under Awaab's Law.
Questions from Highgate
Do you cover Highgate and nearby?
Yes. We cover Highgate and nearby places including Archway, Belsize Park, Chalk Farm and Kilburn. Send your postcode and we will confirm.
What is the main cause of condensation in a house?
The main cause is moisture from everyday living, such as showers, cooking and drying clothes, that is not being extracted, combined with cold surfaces where it condenses. Poor or failed extract fans are a very common cause.
Will a dehumidifier fix condensation?
A dehumidifier helps in one room but treats the symptom. Fixing the extract in the wet rooms, and adding whole-home ventilation where needed, removes moisture before it spreads.
What is the price of a condensation fix in Highgate?
Guide prices for Highgate use London rates: new ducted fan to outside through the loft or ceiling (insulated duct, roof or soffit outlet) is typically £525 to £900 inc VAT per fan. We confirm a fixed price in writing before any work starts.
Is the survey free in Highgate?
For new installations on the UK mainland, yes. The survey is free and the quote that follows is fixed and in writing. Servicing, testing and repair visits are charged, and we confirm the cost before booking.
Get a guide price online, then we confirm the plan on a free survey in Highgate.
Condensation and mould fixes near Highgate
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