Mountain Ash, Mid Glamorgan
Condensation and mould ventilation fixes in Mountain Ash
We find why the house is wet and fix the ventilation, rather than painting over mould. Covering Mountain Ash and CF43, CF45 and CF46.
- From £425 inc VAT per fan
- Free survey
We survey Mountain Ash homes for condensation with meters, not guesswork, and explain what we find.
Customers in Mountain Ash can get a guide price online in a couple of minutes. It uses Wales rates, which is what we would charge for the same job anywhere in Mid Glamorgan. We survey first, free of charge for new installations on the mainland, then send a fixed written quote.
Condensation and mould fixes in Mountain Ash at a glance
- Town
- Mountain Ash, Mid Glamorgan
- Postcode districts
- CF43, CF45 and CF46
- Nearby
- Treharris (3 miles), Rhondda (3 miles) and Aberdare (4 miles)
- Price region
- Wales
- Survey
- Free survey (UK mainland)
How we approach condensation and mould fixes in Mountain Ash
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. Mould needs that damp surface to grow.
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 Mountain Ash
| Work | Guide price |
|---|---|
| Continuous-running extract fan (dMEV) with humidity boost, flow tested (per fan) | £330–£575 inc VAT |
| Condensation and mould ventilation survey with written findings (per home) | £120–£215 inc VAT |
| New ducted fan to outside through the loft or ceiling (insulated duct, roof or soffit outlet) (per fan) | £425–£700 inc VAT |
Guide prices using Wales rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
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. Rented homes in Wales must be fit for human habitation under the Renting Homes (Wales) Act, and damp and mould is one of the matters considered.
Questions from Mountain Ash
What area around Mountain Ash do you work in?
All of Mid Glamorgan. Near Mountain Ash that includes Treharris, Rhondda, Aberdare and Merthyr Tydfil.
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 PIV or MVHR better for condensation?
For most existing homes with general condensation, PIV plus good extract fans is the most cost-effective fix. MVHR suits airtight, well-insulated homes and full renovations.
Do you cover Mountain Ash and nearby?
Yes. We cover Mountain Ash and nearby places including Treharris, Rhondda, Aberdare and Merthyr Tydfil. Send your postcode and we will confirm.
What is the price of a condensation fix in Mountain Ash?
Guide prices for Mountain Ash 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.
Book a condensation survey in Mountain Ash and get a written list of causes and fixes.
Condensation and mould fixes near Mountain Ash
More services in Mountain Ash
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.