Casement windows in Roscommon
Casement window supply and fitting across Co. Roscommon, covering Roscommon, Boyle, Ballaghaderreen, Castlerea. 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 Roscommon 3-bed semi (14.79 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
- 50%of pre-2011 Roscommon BER homes have older double glazing
- 14.79 m²median window area on a Roscommon semi-D BER
- 2,088heating degree days near Roscommon
What casement windows cost in Co. Roscommon
On SEAI's BER register for pre-2011 homes in Co. Roscommon, a typical semi-detached house has a median 14.79 m² of window area and a detached house has 19.77 m². At our installed guide prices per window and per square metre, replacing all casement windows in Co. Roscommon typically costs:
| Casement frame & glass | Single window (fitted) | Roscommon semi-D (14.79 m²) | Roscommon detached (19.77 m²) |
|---|---|---|---|
| White uPVC casement (double glazed, Uw ≤ 1.4) | €350 to €850 | €6,656 to €11,092 | €8,896 to €14,828 |
| Coloured or triple-glazed uPVC (Uw 0.8) | €550 to €1,100 | €9,614 to €14,050 | €12,850 to €18,782 |
| Flush sash casement (timber-look exterior) | €750 to €1,300 | €11,092 to €15,973 | €14,828 to €21,352 |
| Thermally broken aluminium casement | €700 to €1,550 | €13,311 to €20,706 | €17,793 to €27,678 |
Our sums from Co. Roscommon'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. Roscommon
- 50%older double glazing on pre-2011 Roscommon BERs (25th of 26)
- 9.5%still with single glazing
- 23%of Roscommon homes built 1981–2000 (CSO Census)
- 74%detached houses in the county
Across Co. Roscommon, 59% 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 Roscommon homes were built between 1981 and 2000 and 39% 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 Roscommon, a normal year brings 2,088 heating degree days (the 8th coldest 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. Roscommon (Census 2022 population): Roscommon (6,555), Boyle (2,915), Ballaghaderreen (2,387), Castlerea (2,348), Lanesborough-Ballyleague (1,733), Strokestown (850).
Casement Window coverage across every town in Co. Roscommon
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Local casement window coverage across Co. Roscommon includes Roscommon Town, Monksland & Athlone West, Boyle, Castlerea, Ballaghaderreen, Strokestown, Elphin, Frenchpark, as well as Roosky & Tarmonbarry, Knockcroghery and surrounding rural townlands.
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Roscommon casement window questions
How much do casement windows cost in Roscommon?
In Co. Roscommon, 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 Roscommon semi-D (14.79 m² of window) runs €6,656 to €11,092 in uPVC.
Can I get the SEAI Windows Grant in Roscommon?
Yes. The 2026 SEAI Windows Grant applies across Co. Roscommon: €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. Roscommon are covered?
All of Co. Roscommon, including Roscommon, Boyle, Ballaghaderreen, Castlerea, Lanesborough-Ballyleague and surrounding areas. Your request goes to one vetted window company covering your county.
Should I pick double or triple glazed casement windows in Roscommon?
With 2,088 heating degree days near Roscommon, 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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