Portslade, East Sussex
Condensation and mould ventilation fixes in Portslade
We find why the house is wet and fix the ventilation, rather than painting over mould. Covering Portslade and BN3, BN41 and BN42.
- From £490 inc VAT per fan
- Free survey

In Portslade homes, black mould usually comes down to the same few causes: weak fans, loft-vented ducts and no background ventilation.
Work in Portslade 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 Portslade at a glance
- Town
- Portslade, East Sussex
- Postcode districts
- BN3, BN41 and BN42
- Nearby
- Hove (2 miles), Shoreham-by-Sea (3 miles) and Brighton (4 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
How we approach condensation and mould fixes in Portslade
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.
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 Portslade
| 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 |
These ranges use our South East rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.
When to get it looked at
- Water running down windows on cold mornings
- Musty smell in bedrooms or wardrobes
- Peeling paint or wallpaper in bathrooms
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 Portslade
What area around Portslade do you work in?
All of East Sussex. Near Portslade that includes Hove, Shoreham-by-Sea, Brighton and Lancing.
What is the main cause of condensation in a house?
The main cause is moisture from everyday living, such as showers, cooking and drying clothes, that is not being extracted, combined with cold surfaces where it condenses. Poor or failed extract fans are a very common cause.
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.
Do you cover Portslade and nearby?
Yes. We cover Portslade and nearby places including Hove, Shoreham-by-Sea, Brighton and Lancing. Send your postcode and we will confirm.
What is the price of a condensation fix in Portslade?
Guide prices for Portslade use South East rates: new ducted fan to outside through the loft or ceiling (insulated duct, roof or soffit outlet) is typically £490 to £825 inc VAT per fan. We confirm a fixed price in writing before any work starts.
If we fit the fix, the Portslade survey is free.
Condensation and mould fixes near Portslade
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