Greenwich, Greater London
Condensation and mould ventilation fixes in Greenwich
We find why the house is wet and fix the ventilation, rather than painting over mould. Covering Greenwich and SE3, SE7, SE10 and SE12.
- From £525 inc VAT per fan
- Free survey
We survey Greenwich homes for condensation with meters, not guesswork, and explain what we find.
We cover Greenwich and the surrounding SE3, SE7, SE10 and SE12 postcodes as part of our work across Greater London. We survey first, free of charge for new installations on the mainland, then send a fixed written quote.
Condensation and mould fixes in Greenwich at a glance
- Town
- Greenwich, Greater London
- Postcode districts
- SE3, SE7, SE10 and SE12
- Nearby
- New Cross (1 mile), Blackheath (1 mile) and Brockley (1 mile)
- Price region
- London
- Survey
- Free survey (UK mainland)
What the work involves
Ventilation is usually the biggest part of the cure, but not the only part. Heating patterns, insulation gaps and cold bridges matter too, and some damp is not condensation at all: leaks, penetrating damp and rising damp need different trades.
Mould treatment advice
How to clean and treat affected areas once the cause is fixed.
Survey and findings
Humidity and surface readings, existing fans flow-tested, and a written list of causes and fixes.
Guide prices in Greenwich
| 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 |
London rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
Common reasons people call
- Black mould on window reveals, ceilings or behind furniture
- Water running down windows on cold mornings
- Musty smell in bedrooms or wardrobes
Rules that apply in England
In England, ventilation is covered by Part F of the Building Regulations and its guidance, Approved Document F (2021 edition). 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 Greenwich
What area around Greenwich do you work in?
All of Greater London. Near Greenwich that includes New Cross, Blackheath, Brockley and Ladywell.
Can you tell if it is rising damp?
We can tell you when the pattern does not look like condensation, such as a tide mark low on a wall or damp that appears after rain, and point you to the right specialist.
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.
Do you cover Greenwich and nearby?
Yes. We cover Greenwich and nearby places including New Cross, Blackheath, Brockley and Ladywell. Send your postcode and we will confirm.
What is the price of a condensation fix in Greenwich?
Guide prices for Greenwich 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.
Book a condensation survey in Greenwich and get a written list of causes and fixes.
Condensation and mould fixes near Greenwich
More services in Greenwich
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Answer a few questions for a price range, or send photos and we will come back to you with a written quote.