Harold Wood, Greater London
Condensation and mould ventilation fixes in Harold Wood
We find why the house is wet and fix the ventilation, rather than painting over mould. Covering Harold Wood and RM2, RM3 and RM11.
- From £525 inc VAT per fan
- Free survey

We survey Harold Wood homes for condensation with meters, not guesswork, and explain what we find.
Customers in Harold Wood can get a guide price online in a couple of minutes. It uses London rates, which is what we would charge for the same job anywhere in 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 Harold Wood at a glance
- Town
- Harold Wood, Greater London
- Postcode districts
- RM2, RM3 and RM11
- Nearby
- Emerson Park (1 mile), Romford (2 miles) and Hornchurch (3 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
Condensation and mould fixes for Harold Wood homes
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 Harold Wood
| 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
- Water running down windows on cold mornings
- Musty smell in bedrooms or wardrobes
- Peeling paint or wallpaper in bathrooms
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 Harold Wood
What is the price of a condensation fix in Harold Wood?
Guide prices for Harold Wood 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.
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.
Is black mould dangerous?
Damp and mould can affect health, particularly for people with asthma, allergies, weak immune systems, children and older people, according to NHS and government guidance. It should be dealt with rather than lived with.
Is the survey free in Harold Wood?
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.
How do I get a price for a condensation fix in Harold Wood?
Use the guide price tool, the form on this page, live chat, WhatsApp or call 0800 088 6341. A postcode and a couple of photos help us give you a useful answer first time.
We can log humidity in your Harold Wood home afterwards so you can see the improvement.
Condensation and mould fixes near Harold Wood
More services in Harold Wood
Get a guide price in two minutes
Answer a few questions for a price range, or send photos and we will come back to you with a written quote.