Window Replacement questions answered in plain English

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.

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.

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.

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.

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.

A two- or three-person fitting crew replaces 8 to 10 windows and a front door in a lived-in 3-bed semi-detached house in 2 working days — removing and fitting room by room so no opening is ever left unsealed overnight.

Experienced replacement fitters cut the old frame fixings cleanly with a reciprocating saw and release the internal reveal beads carefully. Any minor hairline plaster touch-ups along the internal window board and reveal are made good and trimmed as part of the installation.

Upgrading from A-rated double glazing (1.2 W/m²K) to 40mm–44mm argon triple glazing (0.8 W/m²K) typically adds only 10% to 15% (€600 to €1,100 across a whole 3-bed semi-detached house) while making rooms noticeably warmer beside beds and sofas.

Currently the SEAI Windows (€1,500–€4,000) and Doors (€800 per door) grant is paid through the National Home Energy Upgrade Scheme (One Stop Shop) where the home reaches at least a B2 BER and HLI ≤ 2.0. Many homeowners whose homes only need windows and doors choose direct supply-and-fit with an independent installer because avoiding One Stop Shop management overhead often saves more than the grant amount.

On a typical 9-window 3-bed semi-detached house, smooth white uPVC costs €4,500 to €7,800, dual-colour Anthracite Grey foiled uPVC costs €5,400 to €9,200, and triple-glazed Scandinavian aluclad costs €10,500 to €16,800.

Yes — reputable Irish window manufacturers and installers provide a 10-year written warranty covering the frame profile, multi-point locking hardware, hinges and sealed glass units against internal misting or seal failure.