Biggin Hill, Kent
Condensation and mould ventilation fixes in Biggin Hill
We find why the house is wet and fix the ventilation, rather than painting over mould. Covering Biggin Hill and BR6, CR6 and TN16.
- From £490 inc VAT per fan
- Free survey

In Biggin Hill, condensation and mould are usually at their worst between October and March.
Whether the property is in the middle of Biggin Hill or one of the villages around it, the process is the same: a look at the building, a written price, then fitting and testing on the agreed day.
Condensation and mould fixes in Biggin Hill at a glance
- Town
- Biggin Hill, Kent
- Postcode districts
- BR6, CR6 and TN16
- Nearby
- Oxted (4 miles), West Wickham (4 miles) and Orpington (5 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
What the work involves
If extract fans are weak, ducted into the loft or switched off, and windows stay shut in winter, that moisture settles on the coldest surfaces: window reveals, external corners, behind wardrobes and on bathroom ceilings. Mould needs that damp surface to grow.
Fan upgrades
Weak or loft-vented fans replaced and ducted outside, with humidity control.
Whole-home ventilation
PIV, continuous extract or MVHR where moisture is spread through the house.
Guide prices in Biggin Hill
| 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 |
Guide prices using South East rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
Signs it is time to call us
- 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 Biggin Hill
What area around Biggin Hill do you work in?
All of Kent. Near Biggin Hill that includes Oxted, West Wickham, Orpington and Chelsfield.
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.
Do you cover Biggin Hill and nearby?
Yes. We cover Biggin Hill and nearby places including Oxted, West Wickham, Orpington and Chelsfield. Send your postcode and we will confirm.
What is the price of a condensation fix in Biggin Hill?
Guide prices for Biggin Hill use South East rates: new ducted fan to outside through the loft or ceiling (insulated duct, roof or soffit outlet) is typically £490 to £825 inc VAT per fan. We confirm a fixed price in writing before any work starts.
Book a condensation survey in Biggin Hill and get a written list of causes and fixes.
Condensation and mould fixes near Biggin Hill
More services in Biggin Hill
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