Hounslow, Greater London
Condensation and mould ventilation fixes in Hounslow
We find why the house is wet and fix the ventilation, rather than painting over mould. Covering Hounslow and TW3, TW4, TW5 and TW13.
- From £525 inc VAT per fan
- Free survey

We survey Hounslow homes for condensation with meters, not guesswork, and explain what we find.
Hounslow is about 100 miles from our base in Great Barr, Birmingham. We book Hounslow visits by appointment and confirm the date in writing. We survey first, free of charge for new installations on the mainland, then send a fixed written quote.
Condensation and mould fixes in Hounslow at a glance
- Town
- Hounslow, Greater London
- Postcode districts
- TW3, TW4, TW5, TW13 and TW14
- Nearby
- Osterley (1 mile), Isleworth (1 mile) and Heston (1 mile)
- Price region
- London
- Survey
- Free survey (UK mainland)
How we approach condensation and mould fixes in Hounslow
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. We tell you if that is what we find rather than selling a fan that will not help.
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 Hounslow
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £950–£1,675 inc VAT |
| 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 |
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
- Musty smell in bedrooms or wardrobes
- Peeling paint or wallpaper in bathrooms
- Damp patches that dry out in summer and return in winter
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 Hounslow
What area around Hounslow do you work in?
All of Greater London. Near Hounslow that includes Osterley, Isleworth, Heston and Cranford.
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 PIV or MVHR better for condensation?
For most existing homes with general condensation, PIV plus good extract fans is the most cost-effective fix. MVHR suits airtight, well-insulated homes and full renovations.
Do you cover Hounslow and nearby?
Yes. We cover Hounslow and nearby places including Osterley, Isleworth, Heston and Cranford. Send your postcode and we will confirm.
What is the price of a condensation fix in Hounslow?
Guide prices for Hounslow 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 Hounslow and get a written list of causes and fixes.
Condensation and mould fixes near Hounslow
More services in Hounslow
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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.