- Postcode districts
- BT49
- Nearby
- Coleraine, Derry and Magherafelt
- Guide price
- £220–£550
- Typical time on site
- half a day
- Water
- Soft across most of County Londonderry
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Limavady?
Guide price in Limavady: £220–£550 including VAT, depending on the room and what you choose. We adjust the national guide for Northern Ireland, where prices are typically about 12% below the UK average. The figure depends on the size of the room, whether anything moves, and the products you pick.
Extractor fan
- Fan with timer or humidistat
Inline fan
- Ducting to a roof or soffit vent
Continuous extract
- Good for windowless rooms
Guide prices for Limavady including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Limavady
In Limavady we cover BT49; we also cover Coleraine, 12.6 miles away, and Derry.
Being a smaller town does not change how we work in Limavady: free survey, written quote, one team. If your Limavady bathroom has black mould on the ceiling or silicone, the fan and its duct are the first things we check. For windowless bathrooms in Limavady homes, continuous extract that boosts on humidity often works better than a fan tied to the light switch.
Water across much of County Londonderry is soft. Even so, condensation is the bigger problem in any bathroom, and a properly sized extractor is what deals with it. Hardness varies street by street, so check the figure for your postcode with your water supplier.
What the job includes
- Wiring by a qualified electrician, with an isolator outside the room and RCD protection
- Rigid or semi-rigid ducting kept short and straight, and insulated where it crosses a cold loft
- A fan chosen to meet the bathroom extract rate: 15 l/s intermittent or 8 l/s continuous
- Making good around the fan and checking that it extracts properly at the grille
Decisions to make first
Wall or ceiling
A wall fan on an outside wall is the simplest. A ceiling fan over the shower takes steam away at source but needs ducting through the loft.
Replacement air
A fan needs air to replace what it removes, so leave a gap of around 10 mm under the door or fit a door grille. A sealed room starves the fan.
Rules that apply in Northern Ireland
In Northern Ireland, ventilation is covered by Technical Booklet K, and building control is involved where a new bathroom is formed. There is no Part P, but the fan should be wired, tested and certified to BS 7671.

