Brixton, Greater London
Positive input ventilation (PIV) in Brixton
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Brixton and SE5, SE24 and SW9.
- From £950 inc VAT per home
- Free survey
For a typical Brixton semi or terrace, a loft PIV unit is often the quickest way to dry the house out.
Brixton is about 107 miles from our base in Great Barr, Birmingham. We book Brixton visits by appointment and confirm the date in writing. Surveys for new installations are free on the UK mainland, with a written quote afterwards.
PIV in Brixton at a glance
- Town
- Brixton, Greater London
- Postcode districts
- SE5, SE24 and SW9
- Nearby
- Brixton Hill (1 mile), Peckham (2 miles) and East Dulwich (2 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
How we approach PIV in Brixton
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.
PIV with fan upgrades
PIV plus humidity-controlled extract fans in the kitchen and bathroom for the most stubborn condensation.
Loft-mounted PIV
The most common option for houses with a loft. Usually fitted in half a day.
Guide prices in Brixton
| 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 |
Guide prices using London rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
When to get it looked at
- You have no loft but still need whole-flat ventilation (wall unit)
- Streaming windows on most mornings in winter
- Black mould on window reveals and in corners of bedrooms
Rules that apply in England
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. 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 Brixton
How do I get a price for a PIV unit in Brixton?
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.
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.
How much does PIV cost to run?
A standard PIV unit uses very little electricity, comparable to a low-energy light bulb on normal speed. A heated unit costs more in cold spells because the heater switches on when loft air is cold.
What area around Brixton do you work in?
All of Greater London. Near Brixton that includes Brixton Hill, Peckham, East Dulwich and Queenstown.
Do you cover Brixton and nearby?
Yes. We cover Brixton and nearby places including Brixton Hill, Peckham, East Dulwich and Queenstown. Send your postcode and we will confirm.
Send a photo of your loft hatch area and landing ceiling for a quicker Brixton quote.
PIV near Brixton
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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.