Irish Windows & Doors Retrofit Statistics

Official statistics on SEAI grant-supported double and triple glazing window replacements and insulated external doors under the National Retrofit Plan. Source: Sustainable Energy Authority of Ireland. Data to 31/07/2026.

Annual Glazing & Door Installations

Grant-funded window and door upgrades expanded rapidly following the establishment of the National Home Energy Upgrade Scheme in 2022, growing to 5,153 measures in 2025, for an all-time total of 18,214 measures.

Quarterly Split: Q1 Q2 Q3 Q4 *2026 Incomplete (YTD)

Progress Towards the 2030 Target

Glazing and door replacements are one of many fabric upgrades that contribute towards Ireland's target of bringing 500,000 homes to a Building Energy Rating of B2 or better by 2030.

Confirmed Cumulative Trend (~5,153/yr)

* Projected trend (2026–2030) continues the latest confirmed annual run rate (5,153 measures/year). At this pace, cumulative grant-funded window and door replacements would reach approximately 38,826 measures across Ireland by 2030.

Windows & External Door Grants by County and Year

Total Count Per 1,000 Homes

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County	2022	2023	2024	2025	2026*	Total Windows	Total Doors	Combined Total
Dublin	98	663	610	1,052	1,014	1,813	1,624	3,437
Cork	144	442	615	777	605	1,277	1,306	2,583
Donegal	104	216	154	562	382	715	703	1,418
Galway	99	204	243	271	318	559	576	1,135
Tipperary	49	271	378	245	175	534	584	1,118
Limerick	55	210	196	302	176	488	451	939
Mayo	8	70	92	360	218	381	367	748
Kerry	11	79	146	299	211	365	381	746
Wexford	113	154	86	121	202	371	305	676
Laois	62	193	74	146	181	329	327	656
Kildare	6	56	126	136	264	293	295	588
Waterford	6	94	57	158	175	239	251	490
Meath	6	65	128	64	148	203	208	411
Sligo	126	26	53	70	95	184	186	370
Clare	34	49	54	76	116	153	176	329
Louth	28	42	81	50	115	163	153	316
Cavan	50	82	18	63	97	158	152	310
Wicklow	5	39	65	61	139	155	154	309
Kilkenny	2	27	87	66	109	142	149	291
Roscommon	13	75	27	52	80	119	128	247
Offaly	0	12	110	45	73	118	122	240
Carlow	2	7	150	25	38	117	105	222
Westmeath	2	12	21	86	96	104	113	217
Longford	24	36	64	39	44	102	105	207
Monaghan	32	32	10	11	34	60	59	119
Leitrim	0	11	17	16	48	40	52	92
National Total	1,079	3,167	3,662	5,153	5,153	9,182	9,032	18,214

* 2026 figures represent confirmed grant completions through the latest SEAI dataset update (31/07/2026). Rates per 1,000 homes are calculated using Central Statistics Office (CSO) Census 2022 occupied private dwellings data (1,836,728 homes nationwide).

About SEAI Glazing and Door Grants

Under SEAI grant rules, window and door replacement grants are delivered through the One-Stop-Shop and deep retrofit pathways as part of a whole-home energy upgrade achieving a minimum post-works Building Energy Rating of B2.

All installed units must achieve a certified whole-window U-value of 1.4 W/m²K or lower and carry CE/UKCA marking conforming to EN 14351-1 standards. Installations must be carried out by registered, insured contractors and verified through post-works air permeability (blower door) testing and independent BER assessments to ensure compliance with Part L of Irish Building Regulations.

Grant amounts are structured by dwelling type:

Glazing Measure	Apartment	Mid-Terrace	Semi-Detached	Detached
Windows (Complete Replacement) High-performance double or triple glazing (U ≤ 1.4 W/m²K)	€1,500	€1,800	€3,000	€4,000
External Doors (Per Door) Insulated composite/timber doors (max 2 doors / €1,600)	€800	€800	€800	€800