Condensation and mould ventilation fixes in County Antrim

We survey County Antrim homes for condensation with meters, not guesswork, and explain what we find.

Our team is based in Great Barr, Birmingham, and we work throughout County Antrim, from Belfast, Lisburn, Newtownabbey, Carrickfergus and Ballymena. Because of the travel involved, visits here are by arrangement and travel is quoted before booking.

Condensation & mould in County Antrim at a glance

Area: County Antrim, Northern Ireland
Towns listed: 7, largest Belfast
Postcode districts: BT42, BT43, BT41, BT40, BT1 and BT2
Price region: Northern Ireland
Survey: By arrangement, travel quoted first

How we do it

Mould needs that damp surface to grow. 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.

Mould treatment advice

How to clean and treat affected areas once the cause is fixed.

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 County Antrim

Condensation and mould ventilation fixes guide prices in County Antrim
Work	Guide price
New ducted fan to outside through the loft or ceiling (insulated duct, roof or soffit outlet) (per fan)	£410–£675 inc VAT
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

Northern Ireland rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job. Travel is quoted separately for this area.

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 in Northern Ireland

In Northern Ireland, ventilation is covered by the Building Regulations (Northern Ireland) and Technical Booklet K. Landlords in Northern Ireland have repairing and fitness obligations that cover serious damp.

How the job runs

Survey
Find the cause
Recommend
Fix
Check back

Towns we cover in County Antrim

Questions about condensation and mould ventilation fixes in County Antrim

Are prices different in County Antrim?

Our guide prices are adjusted by region. In County Antrim we use Northern Ireland rates, so 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.

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.

Is the survey free in County Antrim?

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.

Which rules apply to ventilation in County Antrim?

In Northern Ireland, ventilation is covered by Technical Booklet K of the Building Regulations (Northern Ireland). Workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations (Northern Ireland) 1993.

Book a condensation survey in County Antrim and get a written list of causes and fixes.