Orpington, Greater London
Condensation and mould ventilation fixes in Orpington
We find why the house is wet and fix the ventilation, rather than painting over mould. Covering Orpington and BR5, BR6 and BR7.
- From £525 inc VAT per fan
- Free survey

For tenants, landlords and homeowners in Orpington, the common question is why the mould keeps coming back.
Orpington is about 118 miles from our base in Great Barr, Birmingham. We book Orpington visits by appointment and confirm the date in writing. Surveys for new installations are free on the UK mainland, with a written quote afterwards.
Condensation and mould fixes in Orpington at a glance
- Town
- Orpington, Greater London
- Postcode districts
- BR5, BR6 and BR7
- Nearby
- Chelsfield (2 miles), Bickley (3 miles) and Chislehurst (3 miles)
- Price region
- London
- 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.
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 Orpington
| Work | Guide price |
|---|---|
| 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 |
| New ducted fan to outside through the loft or ceiling (insulated duct, roof or soffit outlet) (per fan) | £525–£900 inc VAT |
London rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
When to get it looked at
- 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 Orpington
Is the survey free in Orpington?
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 Orpington?
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 Orpington do you work in?
All of Greater London. Near Orpington that includes Chelsfield, Bickley, Chislehurst and Sidcup.
Book a condensation survey in Orpington and get a written list of causes and fixes.
Condensation and mould fixes near Orpington
More services in Orpington
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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.