Longfield, Kent
Condensation and mould ventilation fixes in Longfield
We find why the house is wet and fix the ventilation, rather than painting over mould. Covering Longfield and DA3, DA4 and DA13.
- From £490 inc VAT per fan
- Free survey

Mould in a Longfield bedroom or bathroom is almost always a ventilation problem first.
We cover Longfield and the surrounding DA3, DA4 and DA13 postcodes as part of our work across Kent. The survey is free for new installations on the UK mainland, and the quote that follows is fixed and in writing.
Condensation and mould fixes in Longfield at a glance
- Town
- Longfield, Kent
- Postcode districts
- DA3, DA4 and DA13
- Nearby
- Hartley (1 mile), Swanscombe (4 miles) and Gravesend (4 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
What the work involves
A typical family puts several litres of water into the air every day. 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.
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 Longfield
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £875–£1,525 inc VAT |
| Continuous-running extract fan (dMEV) with humidity boost, flow tested (per fan) | £380–£650 inc VAT |
| Condensation and mould ventilation survey with written findings (per home) | £140–£250 inc VAT |
Guide prices using South East rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
Signs it is time to call us
- 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 Longfield
Is the survey free in Longfield?
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.
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.
How do I get a price for a condensation fix in Longfield?
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 Longfield do you work in?
All of Kent. Near Longfield that includes Hartley, Swanscombe, Gravesend and Dartford.
If we fit the fix, the Longfield survey is free.
Condensation and mould fixes near Longfield
More services in Longfield
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.