Highbury, Greater London
Positive input ventilation (PIV) in Highbury
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Highbury and N1, N5 and N7.
- From £950 inc VAT per home
- Free survey
PIV is often a good fix for Highbury homes with condensation on every window.
Whether the property is in the middle of Highbury or one of the villages around it, the process is the same: a look at the building, a written price, then fitting and testing on the agreed day.
PIV in Highbury at a glance
- Town
- Highbury, Greater London
- Postcode districts
- N1, N5 and N7
- Nearby
- Canonbury (1 mile), Islington (1 mile) and Barnsbury (1 mile)
- Price region
- London
- Survey
- Free survey (UK mainland)
PIV for Highbury homes
It does not replace extract fans: kitchens and bathrooms still need their own extract to remove steam at source. On survey we check the loft, the landing position and the existing fans, and we tell you if PIV is not the right answer.
Wall-mounted PIV for flats
Draws air from outside through an outside wall. Suits flats and homes with no loft space.
PIV with fan upgrades
PIV plus humidity-controlled extract fans in the kitchen and bathroom for the most stubborn condensation.
Guide prices in Highbury
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £950–£1,675 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £1,200–£2,025 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £175–£355 inc VAT |
London rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
Signs it is time to call us
- Musty smell in wardrobes or behind furniture
- The house feels stuffy and damp rather than cold
- Washing dried indoors makes everything worse
Rules that apply in England
In England, ventilation is covered by Part F of the Building Regulations and its guidance, Approved Document F (2021 edition). For homes, it sets minimum extract rates such as 15 litres a second for a bathroom and 30 or 60 for a kitchen, and expects mechanical systems to be airflow-tested.
Questions from Highbury
What area around Highbury do you work in?
All of Greater London. Near Highbury that includes Canonbury, Islington, Barnsbury and Holloway.
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.
Does PIV really stop condensation?
PIV reduces condensation in most homes because it dilutes moist air and keeps it moving, but it works best alongside working extract fans in the kitchen and bathroom. Leaks, rising damp or a cold bridge need fixing separately.
Do you cover Highbury and nearby?
Yes. We cover Highbury and nearby places including Canonbury, Islington, Barnsbury and Holloway. Send your postcode and we will confirm.
What is the price of a PIV unit in Highbury?
Guide prices for Highbury use London rates: positive input ventilation (PIV) loft unit, supplied and fitted is typically £950 to £1,675 inc VAT per home. We confirm a fixed price in writing before any work starts.
Tell us whether your Highbury home has a loft and we can price a PIV unit before visiting.
PIV near Highbury
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