Casement window installers by county

Select your county for local SEAI BER glazing shares, median window areas, Met Éireann heating degree days and towns covered.

Free, no obligation. One vetted window company covering your county replies.

  • 65%of pre-2011 Irish BER homes with older double or single glazing
  • 67%older double glazing in Limerick, highest of 26 counties
  • 16.97 m²median window area on an Irish semi-D BER
  • 26counties covered across Ireland

Glazing, window areas and heating county by county

CountyOlder double glazing (BER)Single glazingMedian semi window areaHeating degree days
Carlow55%5.9%15.84 m²1,969
Cavan51%6.1%15.56 m²2,159
Clare63%7.4%16.94 m²1,843
Cork59%7.8%16.55 m²1,755
Donegal59%5.7%13.89 m²2,211
Dublin55%8.0%20.89 m²1,825
Galway64%5.7%16.2 m²1,860
Kerry59%6.8%15.04 m²1,673
Kildare57%5.1%17.25 m²2,093
Kilkenny53%8.0%15.58 m²1,961
Laois54%6.1%14.92 m²2,080
Leitrim52%8.3%14.62 m²2,102
Limerick67%6.8%17.5 m²1,837
Longford49%6.0%14.4 m²2,094
Louth56%8.8%16.09 m²1,951
Mayo61%7.5%14.9 m²2,028
Meath56%5.7%17.4 m²2,048
Monaghan53%6.9%14.42 m²2,182
Offaly58%7.4%14.46 m²2,046
Roscommon50%9.5%14.79 m²2,088
Sligo56%6.4%15.04 m²2,032
Tipperary64%8.7%14.65 m²1,959
Waterford59%6.5%16.4 m²1,781
Westmeath60%6.1%16.8 m²2,162
Wexford57%7.0%14.6 m²1,844
Wicklow56%7.9%16.74 m²1,883

Glazing shares and median window areas: our sums from SEAI's public BER file for pre-2011 homes. Heating degree days: Met Éireann 1991–2020 climate grid near each county's main town.

Real examples and installation detail

Window fitter lifting a white window frame into an opening
Supply & fit. Window fitter lifting a new multi-chambered casement frame into a prepared structural reveal.
Gloved hand running sealant along a new window frame
Airtightness. Sealing the internal perimeter between the new window frame and insulated reveal to stop cold draughts.

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Questions homeowners ask

Do you cover all 26 counties of Ireland?

Yes. Enquiries from any of the 26 counties go to one vetted window company covering your county for an on-site measure and itemised written quote.

Why do full-house window prices differ slightly from county to county?

While per-window factory costs are national, the median window area on a semi-detached house varies from county to county on the SEAI BER register (and rural counties have a higher share of larger detached homes).

Every guide, calculator and county page

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