Tilbury, Essex
Positive input ventilation (PIV) in Tilbury
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Tilbury and DA11, RM17 and RM18.
- From £825 inc VAT per home
- Free survey

For a typical Tilbury semi or terrace, a loft PIV unit is often the quickest way to dry the house out.
Work in Tilbury follows the rules for England and finishes with a written record of what was fitted and how it was set up.
PIV in Tilbury at a glance
- Town
- Tilbury, Essex
- Postcode districts
- DA11, RM17 and RM18
- Nearby
- Gravesend (2 miles), Grays (2 miles) and Swanscombe (2 miles)
- Price region
- East of England
- Survey
- Free survey (UK mainland)
What the work involves
Flats without a loft use a wall-mounted unit that draws air from outside through a cored hole. PIV works well in houses and flats with general condensation on windows and cold walls.
Heated PIV
A heater module tempers the incoming air in cold weather. Useful in homes where people feel draughts.
Wall-mounted PIV for flats
Draws air from outside through an outside wall. Suits flats and homes with no loft space.
Guide prices in Tilbury
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £825–£1,475 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £1,050–£1,775 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £150–£310 inc VAT |
These ranges use our East of England rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.
When to get it looked at
- Black mould on window reveals and in corners of bedrooms
- Musty smell in wardrobes or behind furniture
- The house feels stuffy and damp rather than cold
Rules that apply in England
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. It sets extract rates for kitchens, bathrooms and utilities and asks for mechanical ventilation to be commissioned and recorded.
Questions from Tilbury
Is the survey free in Tilbury?
For new installations on the UK mainland, yes. The survey is free and the quote that follows is fixed and in writing. Servicing, testing and repair visits are charged, and we confirm the cost before booking.
How long does PIV installation take?
A loft unit is normally fitted in two to four hours, including the diffuser and electrical connection.
How much does PIV cost to install?
A loft-mounted PIV unit usually costs £795 to £1,395 including VAT supplied and fitted, and £995 to £1,695 for a wall-mounted unit in a flat. A heater module adds around £145 to £295.
How do I get a price for a PIV unit in Tilbury?
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.
What area around Tilbury do you work in?
All of Essex. Near Tilbury that includes Gravesend, Grays, Swanscombe and Chafford Hundred.
Book a free Tilbury survey and we will say honestly whether PIV, extract fans or both are needed.
PIV near Tilbury
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Answer a few questions for a price range, or send photos and we will come back to you with a written quote.