- Postcode districts
- DA11, DA12
- Nearby
- Swanscombe, Grays and Longfield
- Guide price
- £280–£650
- Typical time on site
- half a day
- Water
- Very hard across most of Kent
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Gravesend?
In Gravesend, a bathroom extractor fan typically costs £280–£650 including VAT, based on South East England prices. We adjust the national guide for South East England, where prices are typically about 12% above 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 Gravesend including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Gravesend
We work right across Gravesend — DA11 and DA12 — and in neighbouring Swanscombe and Grays.
Homes in and around Gravesend vary, so we look at the floor, the walls and the water system before we price anything. We check the duct route at Gravesend surveys, because a short, straight run to outside matters more than the fan's headline figure. In Gravesend flats, a new vent through an outside wall may need freeholder consent, so we raise it at the survey.
Supplies across most of Kent are very hard. Steam carries that scale onto mirrors and glass, so a fan that clears the room quickly helps on both counts. Hardness varies street by street, so check the figure for your postcode with your water supplier.
What the job includes
- Core-drilling through the wall, or ducting through the loft to a roof or soffit vent
- A backdraught shutter and external grille, so cold air does not blow back in
- Rigid or semi-rigid ducting kept short and straight, and insulated where it crosses a cold loft
- Run-on timer, humidistat or light-linked switching set up to suit how the room is used
Decisions to make first
Intermittent or continuous
An intermittent fan runs during and after use. A continuous fan runs quietly all the time at a low rate and boosts when humidity rises.
Timer or humidistat
A timer keeps the fan running after the light goes off. A humidistat starts it whenever moisture rises, which suits rooms where people forget.
Rules that apply in England
In England, Approved Document F sets bathroom extract at 15 l/s for an intermittent fan or 8 l/s for continuous extract. Wiring a new fan alters a circuit in a room with a bath or shower, so it is notifiable under Part P.
