Gosport, Hampshire
Condensation and mould ventilation fixes in Gosport
We find why the house is wet and fix the ventilation, rather than painting over mould. Covering Gosport and PO1, PO12 and PO13.
- From £490 inc VAT per fan
- Free survey

We survey Gosport homes for condensation with meters, not guesswork, and explain what we find.
Work in Gosport follows the rules for England and finishes with a written record of what was fitted and how it was set up.
Condensation and mould fixes in Gosport at a glance
- Town
- Gosport, Hampshire
- Postcode districts
- PO1, PO12 and PO13
- Nearby
- Portsmouth (2 miles), Southsea (2 miles) and Fareham (4 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
How we approach condensation and mould fixes in Gosport
Mould needs that damp surface to grow. Ventilation is usually the biggest part of the cure, but not the only part.
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 Gosport
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £875–£1,525 inc VAT |
| Continuous-running extract fan (dMEV) with humidity boost, flow tested (per fan) | £380–£650 inc VAT |
| Condensation and mould ventilation survey with written findings (per home) | £140–£250 inc VAT |
South East 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). Damp and mould is assessed as a hazard under the Housing Health and Safety Rating System in England.
Questions from Gosport
Is the survey free in Gosport?
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.
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.
How do I get a price for a condensation fix in Gosport?
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.
What area around Gosport do you work in?
All of Hampshire. Near Gosport that includes Portsmouth, Southsea, Fareham and Cosham.
If we fit the fix, the Gosport survey is free.
Condensation and mould fixes near Gosport
More services in Gosport
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.