Londonderry County · County Londonderry
Condensation and mould ventilation fixes in Londonderry County
We find why the house is wet and fix the ventilation, rather than painting over mould. Covering Londonderry County and BT47 and BT48.
- From £410 inc VAT per fan
- By arrangement
Mould in a Londonderry County bedroom or bathroom is almost always a ventilation problem first.
Customers in Londonderry County can get a guide price online in a couple of minutes. It uses Northern Ireland rates, which is what we would charge for the same job anywhere in County Londonderry. Visits here are by arrangement: we quote travel separately and in writing before you commit.
Condensation and mould fixes in Londonderry County at a glance
- Town
- Londonderry County, County Londonderry
- Postcode districts
- BT47 and BT48
- Nearby
- Derry (under a mile), Strabane (14 miles) and Limavady (15 miles)
- Price region
- Northern Ireland
- Survey
- By arrangement, travel quoted first
What the work involves
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. We tell you if that is what we find rather than selling a fan that will not help.
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 Londonderry County
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £725–£1,275 inc VAT |
| 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 |
These ranges use our Northern Ireland rates. Prices include VAT at 20%. You get a fixed written price before any work is booked. Travel is quoted separately for this area.
Signs it is time to call us
- Water running down windows on cold mornings
- Musty smell in bedrooms or wardrobes
- Peeling paint or wallpaper in bathrooms
Rules that apply in Northern Ireland
Northern Ireland has its own building regulations, with ventilation guidance in Technical Booklet K. Rented homes in Northern Ireland must meet fitness and repair duties, which include dealing with serious damp.
Questions from Londonderry County
Do you cover Londonderry County and nearby?
Yes. We cover Londonderry County and nearby places including Derry, Strabane and Limavady. Send your postcode and we will confirm.
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.
What is the price of a condensation fix in Londonderry County?
Guide prices for Londonderry County use Northern Ireland rates: new ducted fan to outside through the loft or ceiling (insulated duct, roof or soffit outlet) is typically £410 to £675 inc VAT per fan. We confirm a fixed price in writing before any work starts.
Is the survey free in Londonderry County?
Visits here are by arrangement. Because of the ferry or long travel involved, we quote travel separately and in writing before you commit, and we can often combine visits to keep the cost down.
We can log humidity in your Londonderry County home afterwards so you can see the improvement.
Condensation and mould fixes near Londonderry County
More services in Londonderry County
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.