Window replacement in Ireland
Clear full-house and per-window prices for 0.8 W/m²K triple-glazed uPVC, flush sash, aluclad and composite doors — plus one vetted installer in your county (across Dublin, Cork, Galway, Kildare, Meath, Limerick and all 26 counties) to laser-measure and quote in writing.
Free, no obligation. One vetted installer covering your county replies, not five.
- €4,500 to €7,800for a full 3-bed semi-D (8–10 uPVC windows)
- 0.8 W/m²Kwhole-window U-value with 44mm triple glazing
- Up to €4,000SEAI window grant (+ €800/door) in qualifying upgrades
- 2 daystypical room-by-room fitting time for a 3-bed home
Prices, triple glazing and frame materials explained
Compare every replacement window and door specification before you book a survey.
Full-house window replacement cost3-bed semi-detached €4,500 to €7,800, 4-bed detached €6,800 to €11,900, single window €420 to €780, and what moves your quote.
Triple glazing vs double glazingWhy 40mm–44mm argon triple glazing (0.8 W/m²K) eliminates cold downdraughts beside sofas and beds for only +12%–15% more.
A-rated uPVC casement & flush sashMulti-chamber uPVC frames from €4,500 to €7,800 for a full 3-bed semi-D, available in smooth white, Anthracite Grey and heritage flush sash.
Aluclad timber-aluminium windowsWarm factory-lacquered Nordic pine or oak inside with maintenance-free powder-coated aluminium armour outside.
Sliding sash window replacementDouble- and triple-glazed spring-balanced sash windows (€950 to €1,750 per window) for Georgian, Victorian and country cottages.
Composite front doors & sidelightsSolid-core PAS 24 high-security composite entrance doors (€1,850 to €3,200 supplied & fitted) with triple-glazed sidelights.Three steps to a warmer, quieter home
- Price your house size & frame specUse the calculator below to compare smooth white uPVC, colour-foiled flush casements and triple-glazed aluclad for your home.
- One vetted installer contacts youWe pass your enquiry to one vetted window and door installer covering your county. Your phone number never goes to a directory list.
- Laser survey, samples & fixed written quoteThe installer measures every opening, checks upstairs Part B fire-escape hinges, shows you corner sample blocks and quotes in writing.
Calculate your window replacement cost
Pick your approximate house size, your preferred frame material (smooth white uPVC, colour-foiled uPVC or aluclad), and double vs triple glazing.
Estimated guide price (incl. VAT)
€5,150 to €8,900
3-bed semi-detached (8–10 windows) · Smooth white uPVC · Triple glazing (0.8 W/m²K)
Guide price for a 3-bed semi-detached (8–10 windows) in smooth white upvc with triple glazing (0.8 w/m²k), including removal of old frames, low-expansion foam sealing, internal reveal plastering and 13.5% VAT. If completed as part of a qualifying SEAI whole-house upgrade, the SEAI grant for this home size is €3,500.
Ask a local installer for a quoteGet a window replacement quote for your home
Pick your job, house size and county. Your enquiry goes to one vetted window and door installer covering your county, who measures up and gives you a fixed written price.
Window replacement guides & price breakdowns
Straight answers to what people ask most: itemised costs, specifications, planning or grants, and what to check before you book.
More guides & resources: All guides & calculator hub · Technical & trade glossary · Frequently asked questions · All areas covered · About this site
Common questions before you book
How much does it cost to replace all windows in a 3-bed semi-detached house in Ireland?
Supplying and fitting 8 to 10 A-rated uPVC windows in a typical 3-bed semi-detached house in Ireland costs €4,500 to €7,800 in smooth white, €5,400 to €9,200 in dual-colour foiled uPVC (such as Anthracite Grey outside and white inside), or €10,500 to €16,800 in triple-glazed Scandinavian aluclad, including removal of old frames, reveal plastering and 13.5% VAT.
Is triple glazing worth the extra cost over double glazing in Ireland?
Yes. Upgrading a full house from A-rated double glazing (1.2 W/m²K) to 40mm–44mm argon triple glazing (0.8 W/m²K) typically adds just 12% to 15% (€600 to €1,100 on a 3-bed semi-detached house), raises internal glass surface temperature to ~18.4°C in winter, stops morning condensation and cuts street noise.
Can I get the SEAI grant for replacing my windows and doors?
Under SEAI rules, the Windows Grant (€1,500 apartment, €3,000 mid-terrace, €3,500 semi-detached, €4,000 detached) and Doors Grant (€800 per door for up to 2 doors) are available for pre-2011 homes achieving Uw ≤ 1.4 W/m²K as part of a whole-house upgrade reaching at least a B2 BER and Heat Loss Indicator (HLI) ≤ 2.0. If your home only needs windows and doors, booking directly with an independent installer often costs less out of pocket than a One Stop Shop package.
How long does a full-house window replacement take?
Once your windows are laser-measured at survey, custom factory manufacture takes 3 to 6 weeks. On-site installation in a lived-in 3-bed semi-detached house takes 2 days (or 3 days for a large 4–5 bed detached house), fitting room by room so your home is never left open overnight.
What Building Regulations apply to replacement windows in Ireland?
Replacement windows must meet Part L (whole-window Uw ≤ 1.4 W/m²K), Part B Fire Safety (every upstairs bedroom requires an unobstructed side-hung fire-escape opening of at least 0.33 m², minimum 450mm × 450mm), Part K/M safety toughened glass in doors and low-level panes below 800mm from the floor, and Part F background ventilation.
Window replacement across all 26 counties
Requests from all 26 counties go to one vetted local specialist who covers your county — from Dublin, Cork, Galway and Limerick to Kildare, Meath, Wicklow, Waterford and Donegal. Pick your county below for local prices, specifications and advice. Compare all areas covered →
Want a measured written price for your windows?
One vetted installer covering your county visits to laser-measure every opening, show you frame and handle samples, and give you a fixed written quote.