New Malden, Greater London
Condensation and mould ventilation fixes in New Malden
We find why the house is wet and fix the ventilation, rather than painting over mould. Covering New Malden and KT1, KT3 and KT5.
- From £525 inc VAT per fan
- Free survey
Mould in a New Malden bedroom or bathroom is almost always a ventilation problem first.
For condensation and mould ventilation fixes in New Malden, 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 New Malden at a glance
- Town
- New Malden, Greater London
- Postcode districts
- KT1, KT3 and KT5
- Nearby
- Norbiton (1 mile), Worcester Park (2 miles) and Surbiton (2 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
How we approach condensation and mould fixes in New Malden
Ventilation is usually the biggest part of the cure, but not the only part. 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.
Mould treatment advice
How to clean and treat affected areas once the cause is fixed.
Survey and findings
Humidity and surface readings, existing fans flow-tested, and a written list of causes and fixes.
Guide prices in New Malden
| Work | Guide price |
|---|---|
| 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 |
| Condensation and mould ventilation survey with written findings (per home) | £150–£270 inc VAT |
London rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
Signs it is time to call us
- 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
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 New Malden
What area around New Malden do you work in?
All of Greater London. Near New Malden that includes Norbiton, Worcester Park, Surbiton and Kingston upon Thames.
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 is the main cause of condensation in a house?
The main cause is moisture from everyday living, such as showers, cooking and drying clothes, that is not being extracted, combined with cold surfaces where it condenses. Poor or failed extract fans are a very common cause.
Do you cover New Malden and nearby?
Yes. We cover New Malden and nearby places including Norbiton, Worcester Park, Surbiton and Kingston upon Thames. Send your postcode and we will confirm.
What is the price of a condensation fix in New Malden?
Guide prices for New Malden use London rates: new ducted fan to outside through the loft or ceiling (insulated duct, roof or soffit outlet) is typically £525 to £900 inc VAT per fan. We confirm a fixed price in writing before any work starts.
We can log humidity in your New Malden home afterwards so you can see the improvement.
Condensation and mould fixes near New Malden
More services in New Malden
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.