Looking for a window & door fitter across Newry, Mourne & Down? NI Trades is an introduction service that matches Northern Ireland homeowners with window & door fitters who have passed our application-stage checks. Newry, Mourne & Down is one of 11 NI council districts; tradespeople choose the councils they cover, so picking a council means you reach every window & door fitter who works anywhere in this district. Post your job in two minutes - only profiles of window & door fitters interested in your specific job are revealed, and your contact details stay private until you choose who to talk to. Insurance, credentials and references are checked at application stage only - please verify current insurance and credentials directly with any tradesperson before work begins or any money is paid.
What hiring a window & door fitter in Newry, Mourne & Down looks like
Newry, Mourne & Down is a district spanning Newry city, the Mournes and the Down coast, home to around 182,000 people across towns like Newry, Downpatrick, Kilkeel and Warrenpoint. The stock includes town terraces in Newry and Downpatrick, coastal and harbour housing around Kilkeel and Warrenpoint, modern estates, and dispersed rural and mountain properties through the Mournes.
For a window & door fitter that usually means the day-to-day work in this trade. Newry is served by the firmus gas network and parts of East Down by Phoenix, but the Mournes and the rural south of the district are heavily oil-heated.
Newry, Mourne & Down at a glance
Population
around 182,000 (2021 Census)
Main towns
Newry, Downpatrick, Kilkeel, Warrenpoint
District
a district spanning Newry city, the Mournes and the Down coast
Heating
Newry is served by the firmus gas network and parts of East Down by Phoenix, but the Mournes and the rural south of the district are heavily oil-heated.
Extension Building Control fee
around £395 (Full Plans, 2026)
Sources: NISRA Census 2021 (population); each council's published Building Control fees schedule (2026 snapshot, fees rise each April); Phoenix Energy, firmus energy and the Gas to the West project (gas-network coverage).
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How it works
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Post your job
Describe what needs doing and confirm your job is in Newry, Mourne & Down. Tradespeople see only the job - never your contact details.
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Get notified of interest
When a vetted tradesperson expresses interest you get a notification. Maximum 3 per job - no spam.
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Choose and connect
Only profiles of tradespeople interested in your specific job are revealed. You decide who to contact.
Building Control and approvals in Newry, Mourne & Down
If your window & door fitter job involves building, electrical, heating or drainage work that needs sign-off, it is approved by Newry, Mourne and Down District Council's own Building Control office, not a UK-wide body. A typical domestic extension on the Full Plans route costs around £395 in Newry, Mourne & Down as of 2026, and Building Control fees across the 11 NI councils rise each April.
Before work starts, check whether you also need planning permission: see our NI planning permission guide and NI Building Regulations guide. Council Building Control applications across Northern Ireland go through Building Control NI.
Common services
- Whole-house window replacement (uPVC, aluminium, timber)
- Single window supply and fit
- Composite and uPVC external doors
- French doors, sliding patio doors and bifolds
- Misted / failed double-glazed unit replacement
- Sash window replacement (uPVC or timber)
- Handles, hinges, locks and seals repair
- Trickle vent installation
- Old frame removal and disposal
What to ask before hiring
- How is Building Control sign-off being handled, and who lodges it?
- Is the quote for the identical spec as the survey — glass, frame, colour, hardware?
- What is the guarantee on frames, units and installation, in writing?
- Are you replacing the sealed unit or the whole frame, and why?
- Will you make good plaster and render, or is that excluded?
- What happens to the old frames and glass?
- Do you have current public liability insurance?
Typical costs in Northern Ireland
| Job type | Typical price | Notes |
|---|
| uPVC casement window (small or medium) | £350–£650 | Supplied and fitted; NI 2026 |
| uPVC casement (large or bay) | £650–£1,200 | Bay windows at the top end |
| uPVC back door | £550–£900 | Standard half-glazed |
| Composite front door | £900–£1,800 | Most popular front-door choice |
| uPVC French doors | £900–£1,600 | Pair, supplied and fitted |
| Patio / sliding door | £1,200–£2,500 | Two or three pane |
| Aluminium window (per unit) | £700–£1,300 | Slimmer frames, dearer than uPVC |
| Aluminium bifold (3 pane) | £2,500–£5,000 | Spec-driven, brand matters |
| Sash window (uPVC or timber) | £700–£1,400 | Timber and conservation styles higher |
| Whole-house replacement | £3,000–£18,000 | Most NI homes; size and spec driven |
Qualifications & accreditations to look for
Building Control familiarity (NI)
No FENSA in NI — replacement glazing is signed off via council Building Control, and your installer should know the route
Glass and Glazing Federation (GGF)
UK-wide trade body for glazing firms, operates in NI
Manufacturer-approved installer schemes
Rehau, Veka, Kömmerling and similar approved fabricator/installer networks
CSCS Card
Construction Skills Certification Scheme — site competence
Public Liability Insurance
Minimum £2m — required on NI Trades for window and door work
Frequently asked questions
Do replacement windows need Building Control approval in Northern Ireland?
Replacement window and door work in Northern Ireland falls under the NI Building Regulations, and unlike England and Wales there is no FENSA-style self-certification scheme here — sign-off runs through your local council Building Control. In practice installers handle this differently, so the question to ask is direct: how is Building Control being handled for my job, and who is lodging it? Get the answer in writing. If you are ever unsure, your council Building Control office will tell you exactly what your job needs before work starts.
How much does double glazing cost in Northern Ireland?
Researched NI 2026 ranges: a small or medium uPVC casement window runs £350 to £650 supplied and fitted, larger and bay windows £650 to £1,200, and a whole-house replacement lands between £3,000 and £18,000 for most NI homes depending on size and specification. Aluminium runs dearer at £700 to £1,300 per window. These are ranges from real NI installer quotes, not GB averages — and you can check any quote you receive against them free with our Quote Checker.
My double glazing has misted up. Do I need new windows?
Usually not. Misting between the panes means the sealed unit has failed, and in most frames the glass unit can be replaced on its own while the frame stays put — significantly cheaper than full replacement. Frames that are warped, rotten or blown are a different story. A trustworthy fitter will tell you which situation you are in; a quote for whole-window replacement without explaining why the frames cannot be kept deserves a second opinion.
Should I sign up to a finance deal on the day to get the discount?
No — and this exact tactic is why we say it plainly. A discount that only exists if you sign today is pressure selling, common in the windows industry, and reputable NI installers give written quotes that survive a week of thinking. If you are considering finance, compare the financed total against the cash price for the identical specification, and check the quote itself against researched NI ranges first. Our answer on whether double glazing finance is a good idea covers the full weigh-up.
Helpful NI guides for hiring a window & door fitter
Important
The windows industry is where doorstep pressure-selling lives: a "today only" discount that vanishes if you take a week to think is a sales tactic, not a price. Reputable NI installers give a written quote that survives thinking time. And if a sealed unit has misted, you can usually replace just the glass unit rather than the whole frame — a fraction of the cost, and a question worth asking before anyone quotes you for full replacement.
Newry, Mourne & Down is part of our Northern Ireland directory. NI Trades is an introduction service, we list tradespeople who have passed our application-stage checks, but we are not party to any contract you enter into with a tradesperson. See how we vet tradespeople or browse all trade categories.