Upper Norwood, Greater London
Condensation and mould ventilation fixes in Upper Norwood
We find why the house is wet and fix the ventilation, rather than painting over mould. Covering Upper Norwood and CR7, SE19 and SE27.
- From £525 inc VAT per fan
- Free survey

In Upper Norwood homes, black mould usually comes down to the same few causes: weak fans, loft-vented ducts and no background ventilation.
Upper Norwood is about 110 miles from our base in Great Barr, Birmingham. We book Upper Norwood visits by appointment and confirm the date in writing. Surveys for new installations are free on the UK mainland, with a written quote afterwards.
Condensation and mould fixes in Upper Norwood at a glance
- Town
- Upper Norwood, Greater London
- Postcode districts
- CR7, SE19 and SE27
- Nearby
- Crystal Palace (1 mile), Gipsy Hill (1 mile) and Norbury (1 mile)
- Price region
- London
- Survey
- Free survey (UK mainland)
What the work involves
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.
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 Upper Norwood
| 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 |
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 Upper Norwood
Is the survey free in Upper Norwood?
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.
Is PIV or MVHR better for condensation?
For most existing homes with general condensation, PIV plus good extract fans is the most cost-effective fix. MVHR suits airtight, well-insulated homes and full renovations.
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.
How do I get a price for a condensation fix in Upper Norwood?
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 Upper Norwood do you work in?
All of Greater London. Near Upper Norwood that includes Crystal Palace, Gipsy Hill, Norbury and Thornton Heath.
Get a guide price online, then we confirm the plan on a free survey in Upper Norwood.
Condensation and mould fixes near Upper Norwood
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