Belfast, County Antrim
Condensation and mould ventilation fixes in Belfast
We find why the house is wet and fix the ventilation, rather than painting over mould. Covering Belfast and BT1, BT2 and BT7.
- From £410 inc VAT per fan
- By arrangement
In Belfast homes, black mould usually comes down to the same few causes: weak fans, loft-vented ducts and no background ventilation.
For condensation and mould ventilation fixes in Belfast, 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 Belfast at a glance
- Town
- Belfast, County Antrim
- Postcode districts
- BT1, BT2 and BT7
- Nearby
- Castlereagh (2 miles), Newtownabbey (4 miles) and Holywood (5 miles)
- Price region
- Northern Ireland
- Survey
- By arrangement, travel quoted first
How we approach condensation and mould fixes in Belfast
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.
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 Belfast
| Work | Guide price |
|---|---|
| Continuous-running extract fan (dMEV) with humidity boost, flow tested (per fan) | £315–£550 inc VAT |
| Condensation and mould ventilation survey with written findings (per home) | £115–£205 inc VAT |
| New ducted fan to outside through the loft or ceiling (insulated duct, roof or soffit outlet) (per fan) | £410–£675 inc VAT |
Guide prices using Northern Ireland rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first. Travel is quoted separately for this area.
When to get it looked at
- 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 Northern Ireland
Northern Ireland has its own building regulations, with ventilation guidance in Technical Booklet K. Landlords in Northern Ireland have repairing and fitness obligations that cover serious damp.
Questions from Belfast
How do I get a price for a condensation fix in Belfast?
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.
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.
What area around Belfast do you work in?
All of County Antrim. Near Belfast that includes Castlereagh, Newtownabbey, Holywood and Dundonald.
Do you cover Belfast and nearby?
Yes. We cover Belfast and nearby places including Castlereagh, Newtownabbey, Holywood and Dundonald. Send your postcode and we will confirm.
Condensation and mould fixes near Belfast
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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.