Portland, Dorset
Condensation and mould ventilation fixes in Portland
We find why the house is wet and fix the ventilation, rather than painting over mould. Covering Portland and DT3, DT4 and DT5.
- From £465 inc VAT per fan
- Free survey
We survey Portland homes for condensation with meters, not guesswork, and explain what we find.
For condensation and mould ventilation fixes in Portland, send us the postcode, a few photos and a rough idea of the rooms involved. We will tell you what we would fit and roughly what it costs before arranging a visit.
Condensation and mould fixes in Portland at a glance
- Town
- Portland, Dorset
- Postcode districts
- DT3, DT4 and DT5
- Nearby
- Weymouth (3 miles), Dorchester (10 miles) and Bridport (18 miles)
- Price region
- South West
- Survey
- Free survey (UK mainland)
How we approach condensation and mould fixes in Portland
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.
Whole-home ventilation
PIV, continuous extract or MVHR where moisture is spread through the house.
Mould treatment advice
How to clean and treat affected areas once the cause is fixed.
Guide prices in Portland
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £825–£1,450 inc VAT |
| Continuous-running extract fan (dMEV) with humidity boost, flow tested (per fan) | £360–£625 inc VAT |
| Condensation and mould ventilation survey with written findings (per home) | £130–£235 inc VAT |
South West rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
Common reasons people call
- Peeling paint or wallpaper in bathrooms
- Damp patches that dry out in summer and return in winter
- Someone in the home with asthma or allergies made worse by damp
Rules that apply in England
In England, ventilation is covered by Part F of the Building Regulations and its guidance, Approved Document F (2021 edition). 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 Portland
What is the price of a condensation fix in Portland?
Guide prices for Portland use South West rates: new ducted fan to outside through the loft or ceiling (insulated duct, roof or soffit outlet) is typically £465 to £775 inc VAT per fan. We confirm a fixed price in writing before any work starts.
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.
Is the survey free in Portland?
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 do I get a price for a condensation fix in Portland?
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.
If we fit the fix, the Portland survey is free.
Condensation and mould fixes near Portland
More services in Portland
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.