Commercial ventilation, County Down
Ductwork installation in County Down
Spiral and rectangular galvanised ductwork, hung, insulated and sealed, across County Down.
- From £40 + VAT per metre
- By arrangement

Ductwork carries air between the fan or unit and the rooms it serves, and how it is sized, hung and sealed decides how well the whole system performs. We supply and install spiral and rectangular galvanised ductwork, fittings, dampers, insulation and access panels.
Across County Down the job is priced the same way wherever you are: what is fitted, how long it takes and how far we travel. Towns we cover include Bangor, Castlereagh, Newtownards, Newry and Banbridge.
Ductwork in County Down at a glance
- Area
- County Down, Northern Ireland
- Towns listed
- 8, largest Bangor
- Postcode districts
- BT63, BT4, BT5, BT3, BT4 and BT30
- Price region
- Northern Ireland
- Survey
- By arrangement, travel quoted first
How we do it
Undersized or leaky ductwork forces fans to work harder and makes systems noisy. We work to recognised sheet-metal ductwork specifications, seal joints, fit access panels for cleaning and insulate ducts that run through cold spaces or carry cold air. We install for our own ventilation systems and for other contractors, from short runs in a shop to full warehouse and office distribution.
Spiral ductwork
Round galvanised ductwork for supply and extract runs.
Rectangular ductwork
For larger volumes or limited ceiling depth.
Insulation and fire dampers
Thermal insulation and dampers where ducts pass through compartments, as designed.
Guide prices in County Down
| Work | Guide price |
|---|---|
| Spiral ductwork supplied and installed (up to 315 mm diameter) (per metre) | £40–£85 + VAT |
| Rectangular ductwork supplied and installed, insulated where needed (per metre) | £85–£205 + VAT |
Northern Ireland rates shown. Prices exclude VAT. The fixed price is confirmed in writing after we have seen the job. Travel is quoted separately for this area.
Common reasons people call
- A new system needs distribution ductwork
- Existing ducts are leaking or damaged
- A layout change needs ducts moved
Rules in Northern Ireland
In Northern Ireland, ventilation is covered by the Building Regulations (Northern Ireland) and Technical Booklet K. Northern Ireland has its own Workplace (Health, Safety and Welfare) Regulations (Northern Ireland) 1993 with the same duty to ventilate.
How the job runs
- Survey
- Drawings
- Install
- Insulate
- Test
Towns we cover in County Down
Questions about ductwork installation in County Down
Is the survey free in County Down?
Visits here are by arrangement. Because of the ferry or long travel involved, we quote travel separately and in writing before you commit, and we can often combine visits to keep the cost down.
Spiral or rectangular duct?
Spiral duct is quicker to install and leaks less; rectangular duct fits shallow ceiling voids and larger airflows.
Do ducts need insulation?
Ducts carrying cold or warm air through unheated spaces usually need insulation to prevent heat loss and condensation.
Which rules apply to ventilation in County Down?
In Northern Ireland, ventilation is covered by Technical Booklet K of the Building Regulations (Northern Ireland). Workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations (Northern Ireland) 1993.
Which towns in County Down do you cover?
All of County Down, including Bangor, Castlereagh, Newtownards, Newry and Banbridge. If your town is not listed, send the postcode and we will confirm.
Other services in County Down
Get a guide price in two minutes
Answer a few questions for a price range, or send photos and we will come back to you with a written quote.