Barnet, Greater London
Condensation and mould ventilation fixes in Barnet
We find why the house is wet and fix the ventilation, rather than painting over mould. Covering Barnet and EN4, EN5, HA8 and N2.
- From £525 inc VAT per fan
- Free survey

Mould in a Barnet bedroom or bathroom is almost always a ventilation problem first.
Work in Barnet 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 Barnet at a glance
- Town
- Barnet, Greater London
- Postcode districts
- EN4, EN5, HA8, N2 and N12
- Nearby
- New Barnet (1 mile), Totteridge (1 mile) and East Barnet (2 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
How we approach condensation and mould fixes in Barnet
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.
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 Barnet
| Work | Guide price |
|---|---|
| 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 |
| Continuous-running extract fan (dMEV) with humidity boost, flow tested (per fan) | £415–£725 inc VAT |
These ranges use our London rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.
Signs it is time to call us
- 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 Barnet
How do I get a price for a condensation fix in Barnet?
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 Barnet do you work in?
All of Greater London. Near Barnet that includes New Barnet, Totteridge, East Barnet and Hadley Wood.
Do you cover Barnet and nearby?
Yes. We cover Barnet and nearby places including New Barnet, Totteridge, East Barnet and Hadley Wood. Send your postcode and we will confirm.
We can log humidity in your Barnet home afterwards so you can see the improvement.
Condensation and mould fixes near Barnet
More services in Barnet
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.