Streatham, Greater London
Condensation and mould ventilation fixes in Streatham
We find why the house is wet and fix the ventilation, rather than painting over mould. Covering Streatham and SE27, SW12 and SW16.
- From £525 inc VAT per fan
- Free survey
For Streatham homes with streaming windows every morning, the fix is usually cheaper than people expect.
Whether the property is in the middle of Streatham 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 Streatham at a glance
- Town
- Streatham, Greater London
- Postcode districts
- SE27, SW12 and SW16
- Nearby
- Furzedown (1 mile), Norbury (1 mile) and Tooting (1 mile)
- Price region
- London
- Survey
- Free survey (UK mainland)
How we approach condensation and mould fixes in Streatham
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.
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 Streatham
| 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 |
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
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. 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 Streatham
Is the survey free in Streatham?
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.
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.
How do I get a price for a condensation fix in Streatham?
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 Streatham do you work in?
All of Greater London. Near Streatham that includes Furzedown, Norbury, Tooting and Brixton Hill.
Get a guide price online, then we confirm the plan on a free survey in Streatham.
Condensation and mould fixes near Streatham
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