Blackwall, Greater London
Condensation and mould ventilation fixes in Blackwall
We find why the house is wet and fix the ventilation, rather than painting over mould. Covering Blackwall and E3, E14 and E16.
- From £525 inc VAT per fan
- Free survey
In Blackwall homes, black mould usually comes down to the same few causes: weak fans, loft-vented ducts and no background ventilation.
Work in Blackwall 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 Blackwall at a glance
- Town
- Blackwall, Greater London
- Postcode districts
- E3, E14 and E16
- Nearby
- Canary Wharf (1 mile), Canning Town (1 mile) and Bow (1 mile)
- Price region
- London
- Survey
- Free survey (UK mainland)
Condensation and mould fixes for Blackwall homes
If extract fans are weak, ducted into the loft or switched off, and windows stay shut in winter, that moisture settles on the coldest surfaces: window reveals, external corners, behind wardrobes and on bathroom ceilings. Mould needs that damp surface to grow.
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 Blackwall
| 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 |
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.
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. Damp and mould is assessed as a hazard under the Housing Health and Safety Rating System in England.
Questions from Blackwall
Is the survey free in Blackwall?
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.
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.
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.
How do I get a price for a condensation fix in Blackwall?
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 Blackwall do you work in?
All of Greater London. Near Blackwall that includes Canary Wharf, Canning Town, Bow and Limehouse.
Ask for a Blackwall visit and we will test your existing fans before recommending anything.
Condensation and mould fixes near Blackwall
More services in Blackwall
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.