Thamesmead, Greater London
Positive input ventilation (PIV) in Thamesmead
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Thamesmead and DA18, SE2 and SE28.
- From £950 inc VAT per home
- Free survey
PIV is often a good fix for Thamesmead homes with condensation on every window.
We cover Thamesmead and the surrounding DA18, SE2 and SE28 postcodes as part of our work across Greater London. The survey is free for new installations on the UK mainland, and the quote that follows is fixed and in writing.
PIV in Thamesmead at a glance
- Town
- Thamesmead, Greater London
- Postcode districts
- DA18, SE2 and SE28
- Nearby
- Abbey Wood (1 mile), Belvedere (2 miles) and Plumstead (2 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
What the work involves
Many units have a temperature sensor that reduces the flow or switches to a heater module on cold days, so the incoming air does not feel like a draught. Flats without a loft use a wall-mounted unit that draws air from outside through a cored hole.
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 Thamesmead
| 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 Thamesmead
What area around Thamesmead do you work in?
All of Greater London. Near Thamesmead that includes Abbey Wood, Belvedere, Plumstead and Barking.
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 Thamesmead and nearby?
Yes. We cover Thamesmead and nearby places including Abbey Wood, Belvedere, Plumstead and Barking. Send your postcode and we will confirm.
What is the price of a PIV unit in Thamesmead?
Guide prices for Thamesmead 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.
We will check the existing fans in your Thamesmead home at the same visit, because PIV works best with them working.
PIV near Thamesmead
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