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.

Window and door installers in Donegal

135 companies on the SEAI register are based in or serve Donegal for windows and doors (register as of 8 September 2026).

A fitter seen from behind lifting a new window into an opening during a renovation. — Unrecognizable workman installing window in house during renovation process · Ksenia Chernaya · Pexels License · Photo credits

Based in Donegal

27 of them. Sorted by what they are registered for, then by name — this is not an order of merit.

Aiden Mcguinness & Son Ltd
Window and door
Based in Donegal · serves Leinster, Connacht and Ulster · SEAI no. 19613
Based in Donegal.
Anchor Windows
Window and door
Based in Donegal · serves Ulster · SEAI no. 19875
Based in Donegal.
B. Donaghey & Sons
Attic insulationExternal wall insulationInternal wall insulationWindow and door
Based in Donegal · serves Ulster · SEAI no. 10300
Based in Donegal.
C.G. Windows Ltd
Window and door
Based in Donegal · serves Connacht and Ulster · SEAI no. 19814
Based in Donegal.
Cmg Windows
Window and door
Based in Donegal · serves Ulster · SEAI no. 19916
Based in Donegal.
Coastal Windows & Doors
Window and door
Based in Donegal · serves Ulster · SEAI no. 19771
Based in Donegal.
Errigal Windows & Glazing
Window and door
Based in Donegal · serves Ulster · SEAI no. 19712
Based in Donegal.
Frames Direct Uc
Window and door
Nationwide · SEAI no. 19854
Based in Donegal.
Franmac
Window and door
Based in Donegal · serves Ulster · SEAI no. 19935
Based in Donegal.
G. Kilpatrick Windows Ltd
Window and door
Based in Donegal · serves Ulster · SEAI no. 19963
Based in Donegal.
Galbraith Construction Ltd
Attic insulationInternal wall insulationWindow and door
Based in Donegal · serves Ulster · SEAI no. 13643
Based in Donegal.
Gavin McGonagle Windows
Internal wall insulationWindow and door
Based in Donegal · serves Ulster · SEAI no. 19980
Based in Donegal.
Gill Windows
Window and door
Based in Donegal · serves Ulster · SEAI no. 19541
Based in Donegal.
Gortahork Windows
Window and door
Based in Donegal · serves Ulster · SEAI no. 19903
Based in Donegal.
Joe Mcdaid Ltd
Window and door
Based in Donegal · serves Dublin and Ulster · SEAI no. 19626
Based in Donegal.
Lawronna Limited
Window and door
Based in Donegal · serves Ulster · SEAI no. 20054
Based in Donegal.
Lynch Windows Ltd
Window and door
Based in Donegal · serves Dublin, Leinster, Connacht and Ulster · SEAI no. 19518
Based in Donegal.
Martin Conservatories
Window and door
Based in Donegal · serves Ulster · SEAI no. 19531
Based in Donegal.
Mc Menamin Building Contractors Ltd
Attic insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationWindow and door
Based in Donegal · serves Dublin and Ulster · SEAI no. 16109
Based in Donegal.
McNamee Window Systems Ltd
Window and door
Based in Donegal · serves Ulster · SEAI no. 19619
Based in Donegal.
Pat Kelly & Sons
Window and door
Based in Donegal · serves Ulster · SEAI no. 19713
Based in Donegal.
Pauric Neely
Window and door
Based in Donegal · serves Ulster · SEAI no. 19757
Based in Donegal.
Pml Windows And Doors
Window and door
Based in Donegal · serves Dublin, Leinster and Ulster · SEAI no. 19476
Based in Donegal.
Premier Solutions NW Ltd
Attic insulationCavity wall insulationInternal wall insulationWindow and door
Based in Donegal · serves Ulster · SEAI no. 16379
Based in Donegal.
T Patton And Son Ltd
Window and door
Based in Donegal · serves Ulster · SEAI no. 19704
Based in Donegal.
Tirconaill Contracts Ltd T/A Mc Taggart Insulation
Attic insulationCavity wall insulationExternal wall insulationHeat pumpInternal wall insulationWindow and door
Nationwide · SEAI no. 15552
Based in Donegal.
Tpd Windows
Window and door
Based in Donegal · serves Ulster · SEAI no. 19920
Based in Donegal.

Also cover Donegal from elsewhere (108)

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 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 · Brendan Sammon Aughnasheelin Ltd · Brenglaze Window Systems L T D · Bridge Crest Ltd T/A Senator Windows · Brownes Upvc · Carlson & Co Ltd · Carrabine Joinery Ltd · Castle Windows · Cavan Glass By Design · Cozy Windows Limited · Cubo Rooflights Limited · 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 Doors And Floors Limited · New Generation Doors Ltd · Nordan Vinduer Ireland Ltd · Norlux Windows · 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 · Weatherproof Windows And Doors Ltd · Wedlock Windows Ltd · WindowKerr

What it costs, and what the grant pays

The grant for a semi-detached house is €3,000. SEAI recorded a middle price of €9,085 for this work last year, which leaves about €6,085 for you to pay. These are national figures, not Donegal ones — SEAI does not publish prices by county.

This job has no SEAI median price; the cost above is an estimate.

What it costs on a home like yours, and what you are left paying

Before you sign

Wait for your grant approval email before any work starts. SEAI does not pay for work that began before it was approved.
Get at least three quotes, and check each one covers the same job — the cheapest quote is often the one that leaves something out.
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.
Get it in writing: what is being done, what it costs, when it starts and when it is finished.

How the application works

Ask up to five of them

Fill in one form, tick who you want to hear from, and we pass your details to those companies and nobody else. It costs nothing and you are under no obligation.

Get windows and doors quotes in Donegal

Common questions

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.

Other work in Donegal

Listed on SEAI’s public registers on 8 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.