Casement windows in Mayo
Casement window supply and fitting across Co. Mayo, covering Castlebar, Ballina, Westport, Claremorris. 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 Mayo 3-bed semi (14.9 m² median BER window area) runs €4,500 to €8,800 before the €3,000 SEAI grant.
Tap your frame style and house type below and one vetted window company covering Co. Mayo contacts you to arrange a free survey and written price.
Free, no obligation. One vetted window company covering your county replies.
- €350 to €850per white uPVC casement window, supplied & fitted
- 61%of pre-2011 Mayo BER homes have older double glazing
- 14.9 m²median window area on a Mayo semi-D BER
- 2,028heating degree days near Castlebar
What casement windows cost in Co. Mayo
On SEAI's BER register for pre-2011 homes in Co. Mayo, a typical semi-detached house has a median 14.9 m² of window area and a detached house has 20.39 m². At our installed guide prices per window and per square metre, replacing all casement windows in Co. Mayo typically costs:
| Casement frame & glass | Single window (fitted) | Mayo semi-D (14.9 m²) | Mayo detached (20.39 m²) |
|---|---|---|---|
| White uPVC casement (double glazed, Uw ≤ 1.4) | €350 to €850 | €6,705 to €11,175 | €9,176 to €15,292 |
| Coloured or triple-glazed uPVC (Uw 0.8) | €550 to €1,100 | €9,685 to €14,155 | €13,254 to €19,370 |
| Flush sash casement (timber-look exterior) | €750 to €1,300 | €11,175 to €16,092 | €15,292 to €22,021 |
| Thermally broken aluminium casement | €700 to €1,550 | €13,410 to €20,860 | €18,351 to €28,546 |
Our sums from Co. Mayo'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. Mayo
- 61%older double glazing on pre-2011 Mayo BERs (5th of 26)
- 7.5%still with single glazing
- 28%of Mayo homes built 1981–2000 (CSO Census)
- 70%detached houses in the county
Across Co. Mayo, 69% 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 2.8 W/m²K. Because 28% of Mayo 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 Castlebar, a normal year brings 2,028 heating degree days (the 13th 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. Mayo (Census 2022 population): Castlebar (13,054), Ballina (10,556), Westport (6,872), Claremorris (3,857), Ballinrobe (3,148), Ballyhaunis (2,773).
Casement Window coverage across every town in Co. Mayo
Click your town or Eircode routing key below to get a fast local price for your property in Co. Mayo.
Select your town, suburb or Eircode routing area in Co. Mayo below to pre-fill your location and open our quick 30-second quote check:
Local casement window coverage across Co. Mayo includes Castlebar, Ballina, Westport, Claremorris, Ballinrobe, Ballyhaunis, Swinford, Foxford, as well as Kiltimagh, Belmullet, Crossmolina, Newport & Achill, Charlestown & Knock and surrounding rural townlands.
Real examples and installation detail
Get a casement window price in 4 taps
Tap your job, house type, preferred frame and county. Your enquiry goes to one vetted window company covering your county for a free measure and written quote.
Mayo casement window questions
How much do casement windows cost in Mayo?
In Co. Mayo, 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 Mayo semi-D (14.9 m² of window) runs €6,705 to €11,175 in uPVC.
Can I get the SEAI Windows Grant in Mayo?
Yes. The 2026 SEAI Windows Grant applies across Co. Mayo: €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. Mayo are covered?
All of Co. Mayo, including Castlebar, Ballina, Westport, Claremorris, Ballinrobe and surrounding areas. Your request goes to one vetted window company covering your county.
Should I pick double or triple glazed casement windows in Mayo?
With 2,028 heating degree days near Castlebar, 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.
Every guide, calculator and county page
Jump straight to any specification guide, our interactive calculator, the technical glossary or your county page.
Price & Specification Guides
Calculator, FAQ & Glossary
Replacing draughty casement windows?
One vetted window company covering your county measures every opening and gives you an itemised written quote.