01
Check the Register First
Registration is checkable. The SEAI register is public. It is not a review, but it lets you check that a contractor is listed before you book a survey.
How to choose an installer →Replacement Windows and Doors in Ireland, Listed County by County
589 SEAI-Registered Contractors, With County Pages for All 26 Counties and How to Compare Quotes
Window and door installers in Ireland, drawn from the SEAI public register, with Google ratings where available. 589 contractors, each showing what they are registered to fit and how many counties they cover. Find the ones based near you and ring them yourself.
How Do You Choose a Window and Door Installer in Ireland?
Choosing between window and door installers in Ireland usually starts with a draught you cannot trace, a frame that has gone soft, or condensation that never quite clears. The job is almost never urgent, which is the useful part, because it leaves you time to compare properly instead of taking the first quote that lands.
Listings come from the SEAI public register, last pulled on 7 August 2026. Registrations can change, so check with SEAI directly, including for grant eligibility. Choose your county, see who is based there and who else covers it, and ring them yourself.
We are not an installer and we do not take a cut of the work. Enquiries go straight to the contractor and your details are never sold on.
Replacement Windows, Front Doors and Patio Doors
Replacement Windows
uPVC, aluclad and timber replacements for draughty, rotten or misted frames.
See installers and cost guides →Replacement Doors
Front, back and patio doors, fitted and made good, from contractors on the register.
See installers and cost guides →Composite Front Doors
Insulated composite and uPVC front doors, fitted and made good.
See installers and cost guides →Patio and Sliding Doors
Sliding, French and bifold doors opening onto a garden or patio.
See installers and cost guides →Aluclad and Timber Windows
Timber inside, aluminium outside, for period homes and new builds.
See installers and cost guides →What Actually Happens on a Window Job
Four stages, and the two in the middle are where a cheap quote saves its money. Almost nothing fails through the glass: it goes at the joint where the frame meets the wall, and it is the making good that gets left out.
How to Find a Window and Door Installer Near You
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Choose Your County
Every one of the 26 counties has its own page, showing the contractors registered at an address there and those who cover it from elsewhere.
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Compare What They Cover
Each listing shows what they are registered to fit, how many counties they cover, and a Google rating where one is available.
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Ring Them Yourself
Every listing carries a phone number. Enquiries go straight to the contractor, never through us.
Window and Door Installers by County
The figure is contractors registered at an address in that county, counted from the SEAI register last pulled on 7 August 2026. Every county page also shows who covers it from elsewhere.
- Dublin 122
- Cork 54
- Meath 36
- Galway 35
- Limerick 32
- Kildare 31
- Donegal 26
- Wexford 26
- Tipperary 24
- Louth 23
- Offaly 19
- Mayo 18
Four Things Worth Knowing Before You Ring Anyone
None of this is complicated, and all of it is the difference between a quote you can compare and one you cannot.
02
Survey Before Quote
A survey prices the real job. A survey lets a contractor price the actual sizes and opening types, which a phone call cannot establish.
What it costs →03
Agree Making Good
In writing, inside and out. Plaster inside and render outside both get disturbed. Agree who repairs what before the first frame comes out, because it is the usual gap between two quotes.
Compare materials →04
Mind the Lead Time
Six to twelve weeks. Made to measure frames are not stock. Colour and glazing choices push it out further, so the survey date is nowhere near the start date.
Signs you need new windows →How Long Each Type Lasts
uPVCThe hardware often needs attention before the frame Varies with upkeep
AlucladThe timber inside is a key factor Varies with upkeep
TimberThe painting cycle matters a great deal Varies with upkeep
Sealed unitsThe edge seal is the usual weak point Varies by product
Worth a hardware service on anything over ten years old, and a survey before committing to a full replacement.
Windows and Doors in Ireland: Common Questions
How much does it cost to replace windows in Ireland?
Costs vary with the number of windows, their sizes, the opening types, the frame material and how much making good is included, and aluclad is typically priced above uPVC. Get the job priced in writing after a measured survey, and compare more than one quote.
Is there an SEAI grant for windows and doors?
Not as a standalone grant the way there is for attic insulation or a heat pump. Windows and doors may be covered under the Warmer Homes Scheme or as part of a wider upgrade through the One Stop Shop route. Check the SEAI website for what is covered, the current amounts and whether you are eligible.
How long do new windows take to arrive?
Six to twelve weeks is normal, because frames are made to your measurements rather than taken off a shelf. Non standard colours and glazing push it out further, so order well before the cold weather.
Should I get triple glazing?
It helps most on exposed elevations, on a noisy road, and in a house that is already well insulated. On a sheltered wall in an otherwise draughty house the money usually does more elsewhere first.
Can I replace just the glass instead of the whole window?
If the frame and hardware are sound and only the sealed unit has misted, yes, and it usually costs less than a new window. If the frame has dropped or rotted, a unit swap may not be worth doing.
What does it mean that a contractor is on the SEAI register?
Our listings come from the SEAI public register, and being on it is the qualification we list against rather than something we assess ourselves. Check SEAI directly for its registration requirements.
Need a Window or Door Installer in Ireland?
Listings come from the SEAI public register. Pick your county, check what they are registered to fit, and ring them directly. We do not charge you to contact them.
589 contractors from the SEAI register and other public records
- 1What is wrong with the ones you have?
- 2What sort of house is it?
- 3What matters most to you?