Mortlake, Greater London
Condensation and mould ventilation fixes in Mortlake
We find why the house is wet and fix the ventilation, rather than painting over mould. Covering Mortlake and SW13, SW14 and TW9.
- From £525 inc VAT per fan
- Free survey
In Mortlake homes, black mould usually comes down to the same few causes: weak fans, loft-vented ducts and no background ventilation.
Work in Mortlake 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 Mortlake at a glance
- Town
- Mortlake, Greater London
- Postcode districts
- SW13, SW14 and TW9
- Nearby
- East Sheen (under a mile), Barnes (1 mile) and Kew (1 mile)
- Price region
- London
- Survey
- Free survey (UK mainland)
What the work involves
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. We tell you if that is what we find rather than selling a fan that will not help.
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 Mortlake
| 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.
When to get it looked at
- 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 Mortlake
How do I get a price for a condensation fix in Mortlake?
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.
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 area around Mortlake do you work in?
All of Greater London. Near Mortlake that includes East Sheen, Barnes, Kew and Roehampton.
Do you cover Mortlake and nearby?
Yes. We cover Mortlake and nearby places including East Sheen, Barnes, Kew and Roehampton. Send your postcode and we will confirm.
Book a condensation survey in Mortlake and get a written list of causes and fixes.
Condensation and mould fixes near Mortlake
More services in Mortlake
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.