Limerick · checked 29 October 2026
Cavity wall insulation in Limerick
The grant is national. The housing isn't. What Census 2022 says about Limerick's 76,472 households, the 2010 cut-off, the walls to expect and the fuel that pays for an empty cavity.
Figures checked against seai.ie on 29 October 2026. How we check
The SEAI cavity wall grant is the same in Limerick as everywhere else: €1,800 for a detached house, €1,300 for a semi-D or end of terrace, €850 mid-terrace and €700 apartment, with higher rates for qualifying welfare recipients and HAP or RAS homes (seai.ie, checked 29 October 2026).
Limerick's housing is close to the national pattern on age, with 43% built before 1981, but it leans on oil: 43% of households against 28% on gas.
Limerick homes and the 2010 cut-off
SEAI's wall grants are only for homes built and occupied before 31 December 2010. Census 2022 counted 76,472 households in Limerick. Of those, 6% were built in 2011 or later and fall outside the grant, and 43% were built before 1981, against 8% and 41% for the State (CSO).
| Period built | Limerick | Ireland |
|---|---|---|
| Before 1919 | 9% | 8% |
| 1919 to 1945 | 7% | 6% |
| 1946 to 1960 | 8% | 7% |
| 1961 to 1980 | 20% | 19% |
| 1981 to 2010 | 48% | 49% |
| 2011 or later | 6% | 8% |
| Not stated | 3% | 2% |
CSO Census 2022 Small Area Population Statistics, county file, tables 6.1, 6.2, 6.3 and 6.5 (households). Read 29 October 2026. Percentages are of all households in the table, including those that didn't state an answer.
Limerick City and County is one local authority, so the Census gives one set of figures. 20% of Limerick homes were built between 1961 and 1980, and 48% between 1981 and 2010. 9% date from before 1919. 6% were built in 2011 or later, the lowest share of the four counties on this site, so a larger slice of Limerick's stock sits inside the grant window (CSO).
What walls to expect
We found no published survey of wall types in Limerick, so we don't claim one. The general rules apply. Homes from before 1919 are often solid stone or brick, outside the cavity grant. A block-built house with two leaves and a clear gap is the candidate for a pumped fill, and a later one may already have boards in the cavity, which a borescope checks against the 40 mm rule. Hollow block and timber frame walls can't be pumped under SEAI's standards (SEAI technical standards).
The only way to know your own wall is a survey: a small drilled hole and a borescope on each elevation, which SEAI's standards require before any fill (SEAI technical standards). Is my house suitable? has the checks you can do yourself first.
How Limerick homes are heated
The grant doesn't depend on the fuel, but the fuel decides what an empty cavity costs you each winter. In Limerick, 28% of households heat with natural gas, 43% with oil and 10% with electricity (CSO).
| Main central heating fuel | Limerick | Ireland |
|---|---|---|
| Natural gas | 28% | 33% |
| Oil | 43% | 39% |
| Electricity | 10% | 12% |
| Coal, peat or wood | 8% | 9% |
| No central heating | 1% | 1% |
CSO Census 2022 Small Area Population Statistics, county file, tables 6.1, 6.2, 6.3 and 6.5 (households). Read 29 October 2026. Percentages are of all households in the table, including those that didn't state an answer.
Oil heats 43% of Limerick households, gas 28%, electricity 10% and coal, peat or wood 8%. The grant is the same for each. For an oil boiler the installer must keep the combustion air supply and the flue clear and test the flue after pumping, as SEAI's standards require (SEAI technical standards).
Houses, flats, owners and renters
88% of Limerick households live in a house and 12% in a flat or apartment. 65% own their home, 18% rent privately and 7% rent from a local authority (CSO). Local authority renting is 7% and private renting 18%. A home in a HAP or RAS arrangement, or a homeowner on a qualifying welfare payment, gets the higher cavity rate: €1,700 for a semi-D.
The grant and the cost in Limerick
SEAI pays a fixed amount by home type, not by county. SEAI's median costs are national too: €1,585 for a semi-D and €2,350 for a detached house from January to June 2026, so about €285 and €550 after the grant (SEAI's median costs PDF). SEAI doesn't publish a Limerick median, and we don't invent one. Get a written price with VAT stated and compare it with the national figure.
| Home type | Median installed cost | SEAI grant | Typical cost after grant |
|---|---|---|---|
| Detached house | €2,350 | €1,800 | €550 |
| Semi-D or end of terrace | €1,585 | €1,300 | €285 |
| Mid-terrace | €1,250 | €850 | €400 |
| Apartment | €1,036 | €700 | €336 |
Costs: SEAI median costs, January to June 2026, from SEAI's median costs PDF (a sample of 23,412 completed upgrades; the cost each contractor submitted to SEAI at grant payment; VAT status not stated on the PDF), read 29 October 2026. Grants: Source: seai.ie wall insulation page, checked 29 October 2026.
Finding a registered installer in Limerick
Two lists, both national and both searchable: SEAI's register of contractors, which the grant requires, and NSAI's register of cavity wall insulation installers, which SEAI's technical standards require for the system being used. Check the company on both before you agree to anything. Or use the grant check on this page: we pass your request to one SEAI-registered contractor who covers Limerick.
Where these figures come from
- Housing figures are from the CSO's Census 2022 county file (LK), read 29 October 2026. We add the local authorities together for the county figure.
- Grant amounts are from SEAI's wall insulation page, checked 29 October 2026. They are national.
- Costs are SEAI's national medians for January to June 2026. No county median exists, so none is given.
- Nothing on this page about local housing is estimated. If a local fact has no source, it isn't here.
Questions people ask
Is the cavity wall grant different in Limerick?
No. SEAI pays €1,300 for a semi-D and €1,800 for a detached house in every county.
How many Limerick homes qualify on age?
Census 2022 shows 6% of Limerick homes were built in 2011 or later, outside the grant. 43% were built before 1981.
Does an oil-heated Limerick house get the grant?
Yes. The grant depends on home type, not fuel. The installer must keep the boiler's air supply and flue clear and test the flue after the fill.
Who do I use in Limerick?
A contractor on SEAI's register, who must also be an NSAI-approved installer for the system used. Both registers are national and searchable. Or use the grant check and we pass you to one who covers Limerick.
What does it cost in Limerick?
SEAI publishes no Limerick median. Its national median for a semi-D was €1,585 from January to June 2026, about €285 after the grant.
See your grant, then get a price
Four taps show the SEAI grant for your home. Or call 087 162 1846 between 8am and 8pm and we pass you to one SEAI-registered contractor who covers your area.