Carshalton, Greater London
Condensation and mould ventilation fixes in Carshalton
We find why the house is wet and fix the ventilation, rather than painting over mould. Covering Carshalton and SM1, SM5 and SM6.
- From £525 inc VAT per fan
- Free survey
For tenants, landlords and homeowners in Carshalton, the common question is why the mould keeps coming back.
Whether the property is in the middle of Carshalton 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 Carshalton at a glance
- Town
- Carshalton, Greater London
- Postcode districts
- SM1, SM5 and SM6
- Nearby
- Wallington (1 mile), St Helier (1 mile) and Sutton (2 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
How we approach condensation and mould fixes in Carshalton
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 Carshalton
| 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
- 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). 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 Carshalton
How do I get a price for a condensation fix in Carshalton?
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.
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.
What area around Carshalton do you work in?
All of Greater London. Near Carshalton that includes Wallington, St Helier, Sutton and Belmont.
Do you cover Carshalton and nearby?
Yes. We cover Carshalton and nearby places including Wallington, St Helier, Sutton and Belmont. Send your postcode and we will confirm.
Book a condensation survey in Carshalton and get a written list of causes and fixes.
Condensation and mould fixes near Carshalton
More services in Carshalton
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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.