Ashtead, Surrey
Condensation and mould ventilation fixes in Ashtead
We find why the house is wet and fix the ventilation, rather than painting over mould. Covering Ashtead and KT18, KT21 and KT22.
- From £490 inc VAT per fan
- Free survey

For Ashtead homes with streaming windows every morning, the fix is usually cheaper than people expect.
For condensation and mould ventilation fixes in Ashtead, send us the postcode, a few photos and a rough idea of the rooms involved. We will tell you what we would fit and roughly what it costs before arranging a visit.
Condensation and mould fixes in Ashtead at a glance
- Town
- Ashtead, Surrey
- Postcode districts
- KT18, KT21 and KT22
- Nearby
- Leatherhead (2 miles), Epsom (2 miles) and Ewell (4 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
Condensation and mould fixes for Ashtead homes
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.
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 Ashtead
| Work | Guide price |
|---|---|
| Condensation and mould ventilation survey with written findings (per home) | £140–£250 inc VAT |
| New ducted fan to outside through the loft or ceiling (insulated duct, roof or soffit outlet) (per fan) | £490–£825 inc VAT |
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £875–£1,525 inc VAT |
These ranges use our South East rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.
Common reasons people call
- Damp patches that dry out in summer and return in winter
- Someone in the home with asthma or allergies made worse by damp
- Black mould on window reveals, ceilings or behind furniture
Rules that apply in England
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. Damp and mould is assessed as a hazard under the Housing Health and Safety Rating System in England.
Questions from Ashtead
Is the survey free in Ashtead?
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.
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.
How much does a condensation survey cost?
A ventilation survey with written findings costs £125 to £225 including VAT. If we are surveying for an installation we quote for, the survey is free.
How do I get a price for a condensation fix in Ashtead?
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 Ashtead do you work in?
All of Surrey. Near Ashtead that includes Leatherhead, Epsom, Ewell and Chessington.
Ask for an Ashtead visit and we will test your existing fans before recommending anything.
Condensation and mould fixes near Ashtead
More services in Ashtead
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.