Swansea, West Glamorgan
Condensation and mould ventilation fixes in Swansea
We find why the house is wet and fix the ventilation, rather than painting over mould. Covering Swansea and SA1, SA2 and SA5.
- From £425 inc VAT per fan
- Free survey

We survey Swansea homes for condensation with meters, not guesswork, and explain what we find.
Swansea is about 108 miles from our base in Great Barr, Birmingham. We book Swansea visits by appointment and confirm the date in writing. We survey first, free of charge for new installations on the mainland, then send a fixed written quote.
Condensation and mould fixes in Swansea at a glance
- Town
- Swansea, West Glamorgan
- Postcode districts
- SA1, SA2 and SA5
- Nearby
- Clydach (5 miles), Briton Ferry (5 miles) and Gorseinon (5 miles)
- Price region
- Wales
- Survey
- Free survey (UK mainland)
What the work involves
Ventilation is usually the biggest part of the cure, but not the only part. 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.
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 Swansea
| Work | Guide price |
|---|---|
| New ducted fan to outside through the loft or ceiling (insulated duct, roof or soffit outlet) (per fan) | £425–£700 inc VAT |
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £750–£1,325 inc VAT |
| Continuous-running extract fan (dMEV) with humidity boost, flow tested (per fan) | £330–£575 inc VAT |
Wales rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
Common reasons people call
- 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 Wales
Wales has its own Part F ventilation guidance, published by the Welsh Government, and work is checked by building control. In Wales, damp and mould is one of the matters that decides whether a rented home is fit for human habitation.
Questions from Swansea
What area around Swansea do you work in?
All of West Glamorgan. Near Swansea that includes Clydach, Briton Ferry, Gorseinon and Neath.
Can you tell if it is rising damp?
We can tell you when the pattern does not look like condensation, such as a tide mark low on a wall or damp that appears after rain, and point you to the right specialist.
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.
Do you cover Swansea and nearby?
Yes. We cover Swansea and nearby places including Clydach, Briton Ferry, Gorseinon and Neath. Send your postcode and we will confirm.
What is the price of a condensation fix in Swansea?
Guide prices for Swansea use Wales rates: new ducted fan to outside through the loft or ceiling (insulated duct, roof or soffit outlet) is typically £425 to £700 inc VAT per fan. We confirm a fixed price in writing before any work starts.
We can log humidity in your Swansea home afterwards so you can see the improvement.
Condensation and mould fixes near Swansea
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