Dumbarton, Dunbartonshire
Positive input ventilation (PIV) in Dumbarton
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Dumbarton and G82, PA7 and PA14.
- From £775 inc VAT per home
- Free survey
If your Dumbarton flat has no loft, a wall-mounted PIV unit does the same job through an outside wall.
Whether the property is in the middle of Dumbarton 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 Dumbarton at a glance
- Town
- Dumbarton, Dunbartonshire
- Postcode districts
- G82, PA7 and PA14
- Nearby
- Vale of Leven (2 miles), Port Glasgow (5 miles) and Erskine (6 miles)
- Price region
- Scotland
- Survey
- Free survey (UK mainland)
PIV for Dumbarton homes
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.
Loft-mounted PIV
The most common option for houses with a loft. Usually fitted in half a day.
Heated PIV
A heater module tempers the incoming air in cold weather. Useful in homes where people feel draughts.
Guide prices in Dumbarton
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £775–£1,350 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £950–£1,625 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £140–£285 inc VAT |
Guide prices using Scotland rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
Signs it is time to call us
- Washing dried indoors makes everything worse
- You have no loft but still need whole-flat ventilation (wall unit)
- Streaming windows on most mornings in winter
Rules that apply in Scotland
Scottish projects follow the Technical Handbooks (section 3, Environment) under the Building (Scotland) Regulations, usually with a building warrant. We work to the Scottish ventilation standards and record the airflow achieved.
Questions from Dumbarton
What area around Dumbarton do you work in?
All of Dunbartonshire. Near Dumbarton that includes Vale of Leven, Port Glasgow, Erskine and Clydebank.
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.
Do you cover Dumbarton and nearby?
Yes. We cover Dumbarton and nearby places including Vale of Leven, Port Glasgow, Erskine and Clydebank. Send your postcode and we will confirm.
What is the price of a PIV unit in Dumbarton?
Guide prices for Dumbarton use Scotland rates: positive input ventilation (PIV) loft unit, supplied and fitted is typically £775 to £1,350 inc VAT per home. We confirm a fixed price in writing before any work starts.
Get a PIV guide price for your Dumbarton home online, then confirm it on a free survey.
PIV near Dumbarton
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