Banstead, Surrey
Condensation and mould ventilation fixes in Banstead
We find why the house is wet and fix the ventilation, rather than painting over mould. Covering Banstead and KT17, SM2 and SM7.
- From £490 inc VAT per fan
- Free survey

In Banstead homes, black mould usually comes down to the same few causes: weak fans, loft-vented ducts and no background ventilation.
Work in Banstead 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 Banstead at a glance
- Town
- Banstead, Surrey
- Postcode districts
- KT17, SM2 and SM7
- Nearby
- Belmont (2 miles), Sutton (2 miles) and Ewell (3 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
How we approach condensation and mould fixes in Banstead
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 Banstead
| 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.
When to get it looked at
- Peeling paint or wallpaper in bathrooms
- Damp patches that dry out in summer and return in winter
- Someone in the home with asthma or allergies made worse by damp
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 Banstead
How do I get a price for a condensation fix in Banstead?
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.
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.
What area around Banstead do you work in?
All of Surrey. Near Banstead that includes Belmont, Sutton, Ewell and Cheam.
Do you cover Banstead and nearby?
Yes. We cover Banstead and nearby places including Belmont, Sutton, Ewell and Cheam. Send your postcode and we will confirm.
If we fit the fix, the Banstead survey is free.
Condensation and mould fixes near Banstead
More services in Banstead
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.