Barnes, Greater London
Condensation and mould ventilation fixes in Barnes
We find why the house is wet and fix the ventilation, rather than painting over mould. Covering Barnes and SW13, SW14 and W4.
- From £525 inc VAT per fan
- Free survey
We survey Barnes homes for condensation with meters, not guesswork, and explain what we find.
For condensation and mould ventilation fixes in Barnes, 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 Barnes at a glance
- Town
- Barnes, Greater London
- Postcode districts
- SW13, SW14 and W4
- Nearby
- Mortlake (1 mile), East Sheen (1 mile) and Chiswick (1 mile)
- 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.
Whole-home ventilation
PIV, continuous extract or MVHR where moisture is spread through the house.
Mould treatment advice
How to clean and treat affected areas once the cause is fixed.
Guide prices in Barnes
| Work | Guide price |
|---|---|
| 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 |
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £950–£1,675 inc VAT |
Guide prices using London rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
Common reasons people call
- Someone in the home with asthma or allergies made worse by damp
- Black mould on window reveals, ceilings or behind furniture
- Water running down windows on cold mornings
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 Barnes
How do I get a price for a condensation fix in Barnes?
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.
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.
Can you tell if it is rising damp?
We can tell you when the pattern does not look like condensation, such as a tide mark low on a wall or damp that appears after rain, and point you to the right specialist.
What area around Barnes do you work in?
All of Greater London. Near Barnes that includes Mortlake, East Sheen, Chiswick and Roehampton.
Do you cover Barnes and nearby?
Yes. We cover Barnes and nearby places including Mortlake, East Sheen, Chiswick and Roehampton. Send your postcode and we will confirm.
Send us photos of the mould and your fans and we will give a first view for your Barnes home.
Condensation and mould fixes near Barnes
More services in Barnes
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.