Casement windows in Dublin
Casement window supply and fitting across Co. Dublin, covering Dublin city, Swords, Balbriggan, Malahide. A white A-rated uPVC casement window is €350 to €850 supplied and fitted, a flush sash casement is €750 to €1,300, and a typical Dublin 3-bed semi (20.89 m² median BER window area) runs €4,500 to €8,800 before the €3,000 SEAI grant.
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- €350 to €850per white uPVC casement window, supplied & fitted
- 55%of pre-2011 Dublin BER homes have older double glazing
- 20.89 m²median window area on a Dublin semi-D BER
- 1,825heating degree days near Dublin
What casement windows cost in Co. Dublin
On SEAI's BER register for pre-2011 homes in Co. Dublin, a typical semi-detached house has a median 20.89 m² of window area and a detached house has 31.7 m². At our installed guide prices per window and per square metre, replacing all casement windows in Co. Dublin typically costs:
| Casement frame & glass | Single window (fitted) | Dublin semi-D (20.89 m²) | Dublin detached (31.7 m²) |
|---|---|---|---|
| White uPVC casement (double glazed, Uw ≤ 1.4) | €350 to €850 | €9,400 to €15,668 | €14,265 to €23,775 |
| Coloured or triple-glazed uPVC (Uw 0.8) | €550 to €1,100 | €13,578 to €19,846 | €20,605 to €30,115 |
| Flush sash casement (timber-look exterior) | €750 to €1,300 | €15,668 to €22,561 | €23,775 to €34,236 |
| Thermally broken aluminium casement | €700 to €1,550 | €18,801 to €29,246 | €28,530 to €44,380 |
Our sums from Co. Dublin's median BER window area, inclusive of 13.5% supply-and-fit VAT. Subtract €3,000 (semi-D) or €4,000 (detached) if claiming the 2026 SEAI Windows Grant.
BER glazing figures and towns in Co. Dublin
- 55%older double glazing on pre-2011 Dublin BERs (19th of 26)
- 8.0%still with single glazing
- 23%of Dublin homes built 1981–2000 (CSO Census)
- 10%detached houses in the county
Across Co. Dublin, 63% of pre-2011 homes on the BER database still have older double glazing (U-value 2.5 to 4.0 W/m²K) or single glazing (4.0+ W/m²K), with a county median window U-value of 2.7 W/m²K. Because 23% of Dublin homes were built between 1981 and 2000 and 49% before 1981, thousands of early aluminium and first-generation uPVC casements now have dropped friction hinges, perishing rubber gaskets and misted double-glazed units.
Near Dublin, a normal year brings 1,825 heating degree days (the 4th mildest of the 26 county towns). Replacing 2.7+ W/m²K windows with A-rated casements at 1.2 W/m²K (double) or 0.8 W/m²K (triple) cuts window heat loss by 55% to 70%.
Main towns covered in Co. Dublin (Census 2022 population): Dublin city (1,263,219), Swords (40,776), Balbriggan (24,322), Malahide (18,608), Rush (10,875), Portmarnock (10,750).
Casement Window coverage across every town in Co. Dublin
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Local casement window coverage across Co. Dublin includes Dublin City Centre, Swords & Kinsealy, Dundrum, Milltown & Windy Arbour, Blackrock, Booterstown & Monkstown, Dún Laoghaire, Dalkey, Killiney & Shankill, Stillorgan, Foxrock, Cabinteely & Cornelscourt, Sandyford, Stepaside & Leopardstown, Rathfarnham, Knocklyon, Templeogue & Ballyboden, as well as Ranelagh, Rathmines, Rathgar & Terenure, Donnybrook, Ballsbridge & Sandymount, Tallaght, Firhouse & Citywest, Lucan, Adamstown & Palmerstown, Clondalkin, Rathcoole, Saggart & Newcastle, Blanchardstown, Castleknock, Ongar & Mulhuddart, Malahide & Portmarnock, Howth, Sutton, Baldoyle & Raheny, Clontarf, Killester, Marino & Fairview, Drumcondra, Glasnevin, Whitehall & Santry, Finglas, Cabra & Phibsborough, Balbriggan, Skerries, Rush, Lusk & Donabate and surrounding rural townlands.
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Dublin casement window questions
How much do casement windows cost in Dublin?
In Co. Dublin, a white A-rated uPVC casement window costs €350 to €850 supplied and fitted, a flush sash casement costs €750 to €1,300, and an aluminium casement costs €700 to €1,550. A typical Dublin semi-D (20.89 m² of window) runs €9,400 to €15,668 in uPVC.
Can I get the SEAI Windows Grant in Dublin?
Yes. The 2026 SEAI Windows Grant applies across Co. Dublin: €4,000 for a detached house, €3,000 for a semi-D or end-terrace, €1,800 for a mid-terrace, and €1,500 for an apartment on pre-2011 homes meeting the BER heat-loss requirement.
Which towns in Co. Dublin are covered?
All of Co. Dublin, including Dublin city, Swords, Balbriggan, Malahide, Rush and surrounding areas. Your request goes to one vetted window company covering your county.
Should I pick double or triple glazed casement windows in Dublin?
With 1,825 heating degree days near Dublin, triple-glazed casement windows (0.8 W/m²K, €550 to €1,100 per window) are strongly recommended for north- and east-facing rooms, exposed rural sites and homes upgrading to a heat pump.
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