Blackheath, Greater London
Condensation and mould ventilation fixes in Blackheath
We find why the house is wet and fix the ventilation, rather than painting over mould. Covering Blackheath and SE3, SE10 and SE13.
- From £525 inc VAT per fan
- Free survey
In Blackheath homes, black mould usually comes down to the same few causes: weak fans, loft-vented ducts and no background ventilation.
Whether the property is in the middle of Blackheath 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 Blackheath at a glance
- Town
- Blackheath, Greater London
- Postcode districts
- SE3, SE10 and SE13
- Nearby
- Lee (1 mile), Kidbrooke (1 mile) and Greenwich (1 mile)
- Price region
- London
- Survey
- Free survey (UK mainland)
What the work involves
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.
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 Blackheath
| 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 |
These ranges use our London rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.
When to get it looked at
- 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. 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 Blackheath
Do you cover Blackheath and nearby?
Yes. We cover Blackheath and nearby places including Lee, Kidbrooke, Greenwich and Ladywell. Send your postcode and we will confirm.
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 is the price of a condensation fix in Blackheath?
Guide prices for Blackheath 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.
Is the survey free in Blackheath?
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.
Get a guide price online, then we confirm the plan on a free survey in Blackheath.
Condensation and mould fixes near Blackheath
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