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Window and door installers in Donegal

133 companies on SEAI's register say they do windows and doors in Donegal. Only work by a registered company gets the SEAI grant.

  • 26 are based in Donegal; the other 107 cover it from elsewhere.
  • The grant for a semi-detached house is €3,000. SEAI’s middle price last year was €7,110.
  • Get SEAI’s grant approval before any work starts. SEAI does not pay for work that began first.
  • Get three written quotes for the same job. This list is not a ranking.
A fitter seen from behind lifting a new window into an opening during a renovation.

A fitter lifting a new window into place during a renovation.

Unrecognizable workman installing window in house during renovation process · Ksenia Chernaya · Pexels License

See your grants for windows and doors, and what you’d pay

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Based in Donegal

26 of them, from SEAI's register (read 25 September 2026). Not an order of merit. Published figure

Also cover Donegal from elsewhere (107)

These told SEAI they cover the province Donegal is in, or listed it among the counties they serve. Ask how far they travel before you go any further. Names only here; each one’s full register row is on its own county’s page. OSS = One Stop Shop.

Ashgrove Engineering Ltd T/A Ashgrove Renewables (OSS) · Bayview Contracts Ltd (OSS) · Bord Gais Energy Ltd (OSS) · Breffni Insulation Ltd (OSS) · Churchfield Home Services (OSS) · Cooper Insulation Ltd. (OSS) · Electric Ireland Superhomes (OSS) · Envirobead Ltd. (OSS) · Greenwatt Ltd (OSS) · House 2 Home Retrofit Ltd (OSS) · Kingdom Installation Ltd (OSS) · Kingspan Insulation Ltd (OSS) · Kore Retrofit Ltd (OSS) · Moston Construction Ltd (OSS) · OHK Energy LTD (OSS) · Retrofit Design Ltd (OSS) · Retrofit Energy Ireland (OSS) · SSE Airtricity Energy Services Ltd (OSS) · AGI Construction Ltd · Allied Irish Property Ltd · Anthony Coughlan Heating & Plumbing TA C&S Construction Services · Apex Engineering · Aru Joinery Ltd · Bc Top Contractors Limited Ta Bct Contractors · Bluebuild Renewables Ltd · Brownes Upvc · Carlson & Co Ltd · Carrabine Joinery Ltd · Castle Windows · Cavan Glass By Design · Cozy Windows Limited · Cubo Rooflights Limited · D Carry Construction · Darragh & Gregory Timoney Windows Ltd · Dovista Irl Ltd · Dublin Home Repair Limited · Dungarvan UPVC & Westgate Windows Limited · Dunshaughlin Business Park · Eitas · Energy Saving Technologies Ltd T/A Energlaze · Eoin Kelly And Sons · Fine Fenestration Limited Ta Woodmarq · Flanagan Upvc · Geraghty Joinery · Gp Renovation · Grogan And Currid Ltd · Halpin Aluminium & Upvc Ltd · Harstaf Vinduer Ltd · High Prospects Limited · Home Building Solutions T/A HBS Elegant build Ltd · Inframe Windows And Doors Ltd · Inniskeen UPVC & Aluminium Ltd · Interlux Ireland Limited · JJR Insulation Ltd · Jmc Windows & Doors Ltd · Joe Rowley Windows Ltd · Jsa Windows And Doors · Lucan Windows And Doors · Lynch Windows Cavan · M&L Repairs Windows Doors · Mallon Windows & Doors · Malone Windows Limited · Martin Windows Limited · Mcgorman Pvc Windows And Doors Ltd · Metro Insulation Ltd · Mike Doors & Windows · Mk Living Designs Ltd · Modern Home Solutions · Modern Solutions Trade Windows & Doors · Modern Style Home · Montroy Sales Ltd Trading As All Ireland Doors & Windows · Muinin Contracts Ltd Trading As Senator Windows · Munster Joinery (Ire) Unlimited Company · New Generation Doors Ltd · Nordan Vinduer Ireland Ltd · Norlux Windows · Novus Windows Limited · O'Rourke Windows & Glass Ltd · Padraic Costello Upvc Windows & Door · Pandg Callaghan Trading As Timeless Sash Windows Ltd · Pannoncelt Ltd · Perfect Fit Modular Ltd Ta Perfect Fit Windows & D · Physalia Ltd Ta Ecoaer · Premier Insulations · Prestige Windows And Doors · Rb Glazing · Rend Master Ltd · Retrofit Energy Ireland One Stop Shop Ltd · Revolution Doors & Windows Limited · Rio Ents Ltd ta A-Rate · Silver Insight Limited T/A Quality Composite Doors · Solaregy T/A Sola · Solid Insulation Systems Ireland Ltd · Sustainable Warmth Ltd · T&Aglass · Teroco Windows And Doors Limited · The Professionals · Timoney Windows & Conservatories Ltd · Triple Glazed Windows And Doors · Uab Termo Langai · Ucs Design Group Ireland Ltd · Velux Co Ltd · Vindr Vs Ltd · Wds Valerii Hutsko Limited · Weatherproof Windows And Doors Ltd · Wedlock Windows Ltd · WindowKerr

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The detail

How Donegal compares

Window and door installers who say they work in each county, from SEAI's register. Published figure

Figure 1Published figure

133 window and door installers say they work in Donegal; the median county has 276

Donegal is 26th of 26. The most list Kildare, Kilkenny and Wicklow (383); the fewest, Donegal (133). 18 One Stop Shops list Donegal.

  • Donegal133
  • The median county276
  • Most: Kildare, Kilkenny and Wicklow383
  • Fewest: Donegal133

Each bar counts companies on SEAI's register that list the county for windows and doors. Many firms tick a whole province, so counts move in regional steps. A count is choice, not capacity. Registration is paperwork, not a review of their work.

Sources: SEAI home energy, One Stop Shop and solar registers, read 25 Sep 2026

What it costs, and what the grant pays

National figures, not Donegal ones: SEAI does not publish prices by county. SEAI rule

On a semi-detached house, SEAI's middle price of €7,110 less the grant leaves €4,110 to pay.

Before you sign

Four things SEAI tells homeowners to do.

  1. Wait for your grant approval email before any work starts. SEAI does not pay for work that began before it was approved.
  2. Get at least three quotes, and check each one covers the same job. The cheapest quote is often the one that leaves something out.
  3. Check the company is on the register on the day you sign. Companies join and leave it, and this page is a copy taken on one day.
  4. Get it in writing: what is being done, what it costs, when it starts and when it is finished.

How the application works →

Questions people ask

Do I have to use one of these companies to get the grant?
Yes. SEAI only pays a grant on work done by a company on its register, and the company claims it on your behalf. Work done by anyone else is not covered, however good it is.
How many quotes should I get in Donegal?
Three, from companies registered for the same job, and ask each for a written breakdown. Quotes for the same house often differ by thousands because they include different work, not because one is dearer.
Is this list in any order of merit?
No. Companies based in Donegal come first, then the ones that travel to it, then One Stop Shops, then alphabetical. Being on the register means the paperwork is in order, not that the work is good.

Listed on SEAI’s public registers on 25 September 2026. Being registered is not an endorsement by SEAI or by us. Check the current register on seai.ie before you sign anything. Not affiliated with SEAI. On this list? Get homeowner plans to quote for

Updated · grants checked · register read 25 Sep 2026 · How we know · Corrections