Casement Window guides, calculator & reference
Every casement window cost guide, specification comparison, interactive calculator, FAQ and technical glossary on casementwindows.ie in one place.
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Core casement window guides
Detailed guides covering prices, specifications and what to check before you book.
Casement window pricesWhite uPVC €350 to €850, coloured/triple €550 to €1,100, flush sash €750 to €1,300, aluminium €700 to €1,550 per window, plus full-house totals.See all prices →
Flush casement windowsHow timber-look flush sash casements (€750 to €1,300) compare with standard stormproof lipped frames on Irish homes.Flush vs lipped →
uPVC vs aluminium vs alu-cladComparing multi-chamber uPVC, slim thermally broken aluminium and Scandinavian alu-clad casement frames.Compare frames →
Top-hung, side-hung & fire escapeSide-hung vs top-hung awning openings, French casements and Part B 450mm fire-escape egress hinges.Hinges & Part B rules →
Triple-glazed casement windowsWhy 0.8 W/m²K triple glazing (€550 to €1,100) stops internal condensation and cuts road noise on exposed walls.Triple glazing guide →
2026 SEAI Windows GrantHow to claim €1,500 to €4,000 towards new A-rated casement windows (Uw ≤ 1.4 W/m²K) on pre-2011 homes.Grant rules & amounts →Calculators, FAQ and glossary
| Resource | What's inside | How it helps |
|---|---|---|
| Interactive Cost Calculator | Live price range | Select your specification options to get an instant Irish guide price. |
| Master FAQ Hub | 12 questions answered | Straight answers on pricing, preparation, timelines, rules and aftercare. |
| Technical & Trade Glossary | 15 terms defined | Plain-English definitions of every casement window specification and standard. |
| All 26 Counties Index | 26 county pages | Local housing data and one vetted window company covering your county. |
Real examples and installation detail
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Questions homeowners ask
How much do casement windows cost in Ireland supplied and fitted?
A white A-rated double-glazed uPVC casement window costs €350 to €850 supplied and fitted. Colour-foiled or triple-glazed (0.8 W/m²K) uPVC casements cost €550 to €1,100, flush sash casements cost €750 to €1,300, thermally broken aluminium casements cost €700 to €1,550, and timber-alu-clad casements cost €1,100 to €1,950 per window.
How much does it cost to replace all casement windows in a 3-bed semi?
For a typical Irish 3-bed semi-detached house (8 to 10 casement windows), full replacement costs €4,500 to €8,800 in white uPVC, €6,800 to €11,500 in flush sash casements, or €9,000 to €15,500 in thermally broken aluminium. If the home qualifies for the €3,000 SEAI Windows Grant, subtract €3,000 from those totals.
What is a casement window?
A casement window is a window whose opening sash is attached to the outer frame by side-mounted or top-mounted friction hinges (stays) and swings outwards when you turn the handle. It is the most weather-tight and popular window style in Ireland because wind blowing against the glass presses the sash tighter onto its twin compression gaskets.
What is the difference between a standard casement and a flush casement window?
On a standard stormproof (lipped) casement window, the opening sash overlaps the outer frame by about 8mm to 10mm, creating a raised lip. On a flush casement window, the opening sash closes completely flush into the outer frame on one flat plane, replicating traditional 19th- and 20th-century timber joinery.
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Price & Specification Guides
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