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 Louth?

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 Louth 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 Louth

381 companies on the SEAI register are based in or serve Louth 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 Louth

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

Aspen Eco PowerOne Stop Shop
Attic insulationCavity wall insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationSolar hot waterWindow and door
Based in Louth · serves Dublin and Leinster · SEAI no. 19984 · Website
Based in Louth.
Approved Leinster Windows Limited
Window and door
Based in Louth · serves Dublin and Leinster · SEAI no. 19632
Based in Louth.
Birch Carpentry and Building Services LTD TA Birch Building
Internal wall insulationWindow and door
Based in Louth · serves Leinster · SEAI no. 10873
Based in Louth.
Bridge Crest Ltd T/A Senator Windows
Window and door
Based in Louth · serves Dublin, Leinster and Ulster · SEAI no. 16036
Based in Louth.
Budget Renovations
Attic insulationInternal wall insulationWindow and door
Based in Louth · serves Dublin, Leinster and Munster · SEAI no. 20007
Based in Louth.
Castle Windows
Window and door
Based in Louth · serves Dublin, Leinster and Ulster · SEAI no. 19750
Based in Louth.
DADN Construction Ltd
Attic insulationInternal wall insulationWindow and door
Based in Louth · serves Dublin and Leinster · SEAI no. 18061
Based in Louth.
Decarr Property Maintenance Ltd
Window and door
Based in Louth · serves Dublin and Leinster · SEAI no. 19981
Based in Louth.
Deerpark Glazing Ltd
Window and door
Based in Louth · serves Leinster · SEAI no. 19886
Based in Louth.
Dundalk Glass And Glazing Limited
Window and door
Based in Louth · serves Dublin and Leinster · SEAI no. 19764
Based in Louth.
Eoin Kelly And Sons
Window and door
Based in Louth · serves Dublin, Leinster and Ulster · SEAI no. 19674
Based in Louth.
Gerry Mc Evoy Windows Limited
Window and door
Based in Louth · serves Dublin and Leinster · SEAI no. 19635
Based in Louth.
Malone Windows Limited
Window and door
Based in Louth · serves Dublin, Leinster and Ulster · SEAI no. 19571
Based in Louth.
Mckevitt Windows Ltd
Window and door
Based in Louth · serves Leinster · SEAI no. 19558
Based in Louth.
Modern Home Solutions
Window and door
Nationwide · SEAI no. 20002
Based in Louth.
NE Energy Efficient Homes Ltd
Attic insulationCavity wall insulationInternal wall insulationWindow and door
Based in Louth · serves Dublin and Leinster · SEAI no. 15753
Based in Louth.
O'Hare Home Improvements Ltd
Window and door
Based in Louth · serves Dublin and Leinster · SEAI no. 19986
Based in Louth.
Perfect Fit Modular Ltd Ta Perfect Fit Windows & D
Window and door
Based in Louth · serves Dublin, Leinster and Ulster · SEAI no. 19654
Based in Louth.
Prestige Windows And Doors
Window and door
Nationwide · SEAI no. 19819
Based in Louth.
Senator Windows Drogheda
Window and door
Based in Louth · serves Leinster · SEAI no. 19539
Based in Louth.
Smyth Ecostruct Ltd
Attic insulationInternal wall insulationWindow and door
Based in Louth · serves Leinster · SEAI no. 12688
Based in Louth.
Superior Windows And Doors Ltd
Window and door
Based in Louth · serves Dublin and Leinster · SEAI no. 19851
Based in Louth.
The Professionals
Window and door
Based in Louth · serves Dublin, Leinster and Ulster · SEAI no. 19868
Based in Louth.

Also cover Louth from elsewhere (358)

These told SEAI they cover the province Louth 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.

Activ8 Energies (OSS) · 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) · Energlaze Home Energy Upgrades (OSS) · Energyfix (OSS) · Envirobead Ltd. (OSS) · Greenwatt Ltd (OSS) · Home Comfort Retrofits Ltd (OSS) · House 2 Home Retrofit Ltd (OSS) · Integrate Home Energy Upgrades Limited (OSS) · Kingdom Installation Ltd (OSS) · Kingspan Insulation Ltd (OSS) · Kore Retrofit Ltd (OSS) · Larkrock (OSS) · Lough Projects (OSS) · Moston Construction Ltd (OSS) · OHK Energy LTD (OSS) · Retrofit Design Ltd (OSS) · Retrofit Energy Ireland (OSS) · SSE Airtricity Energy Services Ltd (OSS) · A1 Windows And Doors Limited · Abbie Windows & Glazing Ltd · Abc Glazing Specialists Ltd · Abode Construction Ltd. · Absolute Windows & Construction Services Ltd · Accident And Repairs Windows Ltd. · Accord Window Systems Ltd · Ach Windows Ltd · Advantage Energy Systems Ltd · AGI Construction Ltd · Aidan Fitz Windows And Doors Ltd · Aiden Mcguinness & Son Ltd · Airtight Window Systems Ltd · All Seasons Home Improvements Limited · Allied Irish Property Ltd · Am.Wincon · Amazin Glazin · Anthony Birmingham Ltd · Anthony Coughlan Heating & Plumbing TA C&S Construction Services · Apex Engineering · Archers Windows · Ashbourne Windows Limited · Athlone Windows · Balco Windows Limited · Bc Top Contractors Limited Ta Bct Contractors · Bernard Byrne Ta Better Windows Limited · Bgk Windows And Doors · Blackrock Windows Wilford Limited · Bluebuild Renewables Ltd · Bnm Construction Services Ltd · Bonmahon Joinery Ltd · Brealey Windows & Doors Ltd · Breen Brothers Builders Ltd · Brendan Sammon Aughnasheelin Ltd · Brenglaze Window Systems L T D · Brennan Glazing Services Ltd · Bright Vista Group Ltd. · Brightspace Home Improvements Ltd · Brownes Upvc · Buckley Windows & Doors · Burke Bros. Joinery Ltd · Campbell Glass & Windows Ltd. · Carlson & Co Ltd · Carolan Windows Ltd · Carrabine Joinery Ltd · Carroll Conservatories Ltd · Castlestone Construction BV Ltd · Cavan Glass By Design · CB Windows Ltd · Celbridge Glass & Glazing Ltd · CK Energy Management Solutions (EMS) Ltd t/a ENCON · CKF Interiors & Insulation · Classic Windows And Doors(Kildare) · Clear Window Repairs · Clearline Windows And Doors · Clearwater Window Systems Ltd · Clifford And Cronin Windows And Doors Ltd · Clifton Windows Ltd · Climabright Windows & Doors · Comway Ltd Trading As Home Improvements Ireland · Connect Windows And Doors · Connolly Aluminium · Cozy Windows Limited · Crescent Windows And Doors · Cresthaven Ltd · Cruise Windows Limited · Crumlin Windows And Doors · Crystal Complete Building Ltd · Cubo Rooflights Limited · D Donohoe Construction Limited · Daingean Joinery Ltd · Daingean Upvc Windows And Doors · Darren Knox Building Services Ltd · Darren Nolan Windows And Doors · David Donelan Ta Donelan Windows · Deans Windows Enterprise · Declan Buggy LTD · Deerpark Windows Gateway Ltd · Den Contracts Ireland · Dillons Joinery & Engineering · DL.Windows · Dovista Irl Ltd · Doyle Sustainable Windows T/A Roche Windows · Ds Windows · Dublin Home Repair Limited · Dublin Total Retrofit Solutions · Dungarvan UPVC & Westgate Windows Limited · Dunne Ecofit Limited · Dunshaughlin Business Park · E-Scape Windows And Doors Systems · Earthkind Window Systems Ltd · Eco Tech Windows Ltd · Eco Warmer Homes · Eco Window Concepts Limited · Eden Windoor Ltd · Edwardyna Construction Ltd · Egan Windows Ltd · Eitas · Emerald Windows Ltd · Energy Retrofit Ireland · Energy Saving Technologies Ltd T/A Energlaze · Excellence Trade And Install Limited Trading As Wa · Excellence Windows & Doors Ltd · Expert Residential PropertyLtd T/A Expert Property · Expert Windows Ltd · Fabwindows Ltd · Farrell Windows And Doors Ltd · Fast Fix Window Repairs Ltd · Fine Fenestration Limited Ta Woodmarq · Finestra Ltd. · Frames Direct Uc · Gathergrove Trading Ltd Ta John Ruth And Sons · Geraghty Joinery · Glasnevin Windows And Doors Ltd · Glazeright Ltd · Glazing Spares And Repairs Ltd · Global Home Improvements · Goode Energy · Gorey Glass And Glazing · Gp Renovation · Grant Windows & Doors Ltd · Green Dcbm Ltd · Green Energy Windows · Grogan And Currid Ltd · H&F Windows · Halpin Aluminium & Upvc Ltd · Harrisons Windows And Doors · Harstaf Vinduer Ltd · Harvest Energy · Hayestown Aluminium Fabrications · Hazelgrove Windows And Glass Limited · High Prospects Limited · Home Building Solutions T/A HBS Elegant build Ltd · Homeology Ltd · Horizon Windows & Doors Ltd. · Iclever Construction · Inframe Windows And Doors Ltd · Innovate Build Greener Ltd · Interlux Ireland Limited · Irlpol Ltd · Jack Yore & Sons (Sales) Ltd. · Jason Bracken Windows Ltd · Jason Sinclair Windows Limited · JJS Plumbing & Heating Limited · Jmc Windows & Doors Ltd · Joe Rowley Windows Ltd · John Dempsey Ta Jack Dempsey Windows And Doors · John Greaney Building Contractor · John Taylor Construction Ltd · Jr Fixing Ltd · Jsa Windows And Doors · Jsm Windows And Doors · Just Joinery Ltd Ta Divine Ireland Windows & Doors · K&D Developments (Sligo) Ltd. · K&K Windows Ltd · Kafkane Trading As Sharp Construction · Kb Home Improvements · Kc Maintenance Mullingar · Kcb Windows And Doors · Keane Windows Limited · Keeley Window Systems · Kieran Merrigan Windows & Sunrooms · Kilcurry Windows · Kokoon Insulation Ltd · Koncept Windows And Doors Ltd · KWRS Ltd Kells Traditional Timber Windows & Doors · Lakeland Interiors · Lakeside Windows Systems Limited · Larkin Aluminium Ltd · Larry Farrell Upvc · Leetherm Insulation Ltd. · Leinster Home And Windows · Leinster Quality Windows & Doors · Lisaderg Construction Ltd · Logik Window Systems Ltd · Luca Line Limited TA Luca Line Services · Luca Windows Ltd · Lucan Windows And Doors · Lumavista Windows And Doors · Lynch Windows Ltd · M&L Repairs Windows Doors · Maher Window & Doors Ltd · Mahon Windows Limited · Mark Healion Windows & Doors · Martin Windows Limited · Mateusz Luczak And Katarzyna Luczak Window Service · MB Windows Ltd · Mccarthy Windows And Doors · Mccormack Aluminium Ltd · Mcgorman Pvc Windows And Doors Ltd · Mchale Windows Ltd · Mcmahon And Nagle Environmental Ltd (Trading As Mc · Mcnevin Windows And Doors Ltd · Metro Insulation Ltd · Miax Ltd Ta Kenny Windows · Midland Doors & Windows Ltd · Mike Doors & Windows · Minde Windows · MJS Eco Limited · ML Windows · Modern Solutions Trade Windows & Doors · Modern Style Home · Monarch Windows & Construction Limited · Monasterevin Window System's Ltd · Montroy Sales Ltd Trading As All Ireland Doors & Windows · Moyle Windows Ltd · Muinin Contracts Ltd Trading As Senator Windows · Munster Joinery (Ire) Unlimited Company · Narod Insulation Contractors Ltd · New Build Construction & Window Company · New Doors And Floors Limited · New Frame Windows And Doors Ltd · New Generation Doors Ltd · Niall O Shea Windows Limited · Nolan Glass Limited · Norbec Limited · Nordan Vinduer Ireland Ltd · Norde Blinds & Interiors · Norlux Windows · Nrgi Bespoke Glazing Ltd · O'Hagan Carpentry · O'Rourke Windows & Conservatories · O'Rourke Windows & Glass Ltd · Oakwood Glazing Ltd Ta Grady Joinery · Old Court Construction · Old Manor Windows Ltd. · Orbit Energy Solutions Ltd · P.V.C. Repair Specialists · P&F Windows & Conservatories Ltd Ta Carda Windows · Packie Tobin · Padraic Costello Upvc Windows & Door · Pandg Callaghan Trading As Timeless Sash Windows Ltd · Pannoncelt Ltd · Patrick Carley Trading As Senator Windows · Peak Windows And Doors · Peter Allen Windows And Doors · Physalia Ltd Ta Ecoaer · Pk Services · PK Windows · Platinum Windows And Doors · Pml Windows And Doors · Portlaoise Windows Ltd. · Pouldoon Construction Ltd · Power-Fix Windows And Doors · Premier Insulations · Premium Glazing Systems Ltd · Prestige Energy Windows · Pro Fit Pro Fix · Professional Solid Insulation · Profile Systems Holdings Ltd Trading As K Windows · Pw Windows Ltd · Q Windows And Doors · Rathnure Pvc Limited · Ray Noonan Windows · Rend Master Ltd · Rennova Windows And Doors Ltd · Renual Construction Limited · Retrofit Elite Ltd Retrofit Elite Windows & Doors · Retrofit Energy Ireland One Stop Shop Ltd · Revolution Doors & Windows Limited · Rio Ents Ltd ta A-Rate · Robert Earley Carpentry Services · Roscommon Windows Ltd · Royal Windows · Ryan And Kennedy · Ryan Spray Foam · S&T Windows Ltd Trading As Sk Windows And Doors · Sean Doyle Windows Ltd · Sean Maher · Secure Energy Systems Limited T/A Energy Glazing · Senator Windows Kilkenny · Senator Windows Ltd · Seven Hills Windows & Doors · Sheridan Windows · Shield · Silver Insight Limited T/A Quality Composite Doors · Slaney Glass & Glazing Ltd · Smart Carpentry Ltd · Solaregy T/A Sola · Solid Insulation Systems Ireland Ltd · Sova Contracting Ltd Ta Perfect Home Windows · Stellar Windows & Doors Ltd · Stone Arches LTD T/A Waterford Insulation · Stonewave Construction Ltd · Summerville Contractors Ltd · Sunlight Windows · Superglaze Windows & Doors Ltd · Superior Trade Frames · Supreme Window Installation Co. Ltd · Sustainable Warmth Ltd · T&Aglass · Teroco Windows And Doors Limited · The Meath Door And Floor Centre Ltd Ta The Door & Floor Company · The Period Door Company Ltd · The White Window Company · Thomas Carolan Upvc · Thomas Holton · Thorncrest Ltd · Timoney Windows & Conservatories Ltd · Tirconaill Contracts Ltd T/A Mc Taggart Insulation · Topglass · Total Window Care · Triple A Window Installations Ltd · Triple Glazed Windows And Doors · Tsl Windows Ltd · Tudor Windows Ltd · Tulway Limited Trading As Wright Windows · Tynan Design Manufacuring Ltd · Uab Termo Langai · Ucs Design Group Ireland Ltd · Ultimate Windows Ltd T/A Senator Windows · Velux Co Ltd · Vibrant Windows And Doors Ltd · Vincenttullyconstructionltd.T/A Tully Windows and doors · Vindr Vs Ltd · Vistalite Ltd Trading As Aperture Glazing · Walt Windows And Doors · Warmcore Homes Ltd · Warmedge Windows Limited · Warmer Solutions · Weatherglaze Designs Limited · Weatherproof Windows And Doors Ltd · Weatherseal Windows Ltd · Wedlock Windows Ltd · Westmeath Windows & Doors Limited · Wexford Home Glazing · Wilkinstown Navan Upvc Windows And Doors · Wilson Windows · Window Solutions · Window World · Window World Crimco Ltd · Windows Direct · Windows Repair Tullamore

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 Louth 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 Louth

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 Louth?: 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 Louth 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 Louth

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.