Check my grant
HomeGrant amountsCostDry liningWhich wall?How to applyAbout this siteGet a free quote

All 26 counties · SEAI BER register

Wall insulation by county

43% of Dublin homes with a known wall type have solid or hollow block walls, which need internal or external insulation, against 24% across Ireland and 11% in Donegal. Everywhere else, most walls are cavity (SEAI BER register).

Get a free quoteCheck my grantFree. Your grant in 3 taps, then 4 questions for a price. One SEAI-registered contractor rings you.

Figures checked against SEAI and Citizens Information on 2 November 2026. wallinsulationgrants.ie is not SEAI or a government body and does not award grants.

The three wall insulation jobs SEAI grants, seen from above Three walls in section, outside on the left and the room on the right. Cavity wall: two leaves of block with the gap between them filled with insulation pumped in through drilled holes. Internal insulation, or dry lining: a solid wall with insulation board, a vapour control layer and plasterboard fixed to the inside face, so the room gets a little smaller. External insulation, or the wrap: a solid wall with insulation slabs fixed to the outside, covered with mesh and render, so nothing changes inside. Seen from above. Our drawing, not to scale. Cavity wallOUTSIDEROOMGap filled throughdrilled holes Internal (dry lining)OUTSIDEROOMBoard, vapour layer,plasterboard inside External (the wrap)OUTSIDEROOMSlabs, mesh andrender outside
The three jobs SEAI grants for walls, as its Homeowner's Guide to Wall Insulation describes them (SEAI). Which one a house can have depends on how its walls were built.
  • €8,000SEAI's fixed external wall grant for a detached house, the biggest of the three
  • €4,500for internal wall insulation (dry lining) on a detached house (SEAI)
  • €2,300the higher cavity grant for a detached house, for certain welfare recipients and HAP or RAS landlords (Citizens Information)
  • 24%of homes on the BER register with a known wall type have solid or hollow block walls: no cavity to fill (SEAI BER register)

FreeNo obligationOne contractor rings you, not fiveSEAI approves the grant before any work

Every county

Solid and hollow block walls, county by county

  1. Dublin43%
  2. Wicklow32%
  3. Kildare28%
  4. Meath26%
  5. Cork25%
  6. Tipperary24%
  7. Westmeath21%
  8. Laois21%
  9. Sligo20%
  10. Offaly20%
  11. Roscommon20%
  12. Monaghan19%
  13. Leitrim19%
  14. Limerick18%
  15. Kilkenny17%
  16. Mayo17%
  17. Cavan17%
  18. Carlow16%
  19. Clare16%
  20. Waterford15%
  21. Louth14%
  22. Kerry14%
  23. Longford13%
  24. Wexford12%
  25. Galway12%
  26. Donegal11%
  27. Ireland24%

Share of certificates with solid or hollow block main walls (SEAI BER register, our sums).

The table

Which grant each county's walls need

CountySolid or hollow block…with no insulationCavityEmpty cavityCertificates
Dublin43%21%53%7%128,823
Wicklow32%16%57%6%12,522
Kildare28%9%57%5%18,204
Meath26%11%62%5%16,422
Cork25%19%66%6%65,431
Tipperary24%18%65%5%19,748
Westmeath21%11%65%7%10,928
Laois21%11%64%5%9,587
Sligo20%14%71%4%9,797
Offaly20%14%68%6%8,682
Roscommon20%18%72%6%8,422
Monaghan19%12%69%6%6,635
Leitrim19%16%69%4%5,394
Limerick18%11%70%6%27,051
Kilkenny17%13%66%5%9,706
Mayo17%14%79%7%18,757
Cavan17%11%69%4%9,545
Carlow16%11%65%5%8,295
Clare16%12%73%7%18,354
Waterford15%10%74%6%16,359
Louth14%9%71%10%14,106
Kerry14%10%79%6%22,230
Longford13%10%71%4%5,976
Wexford12%9%78%5%19,702
Galway12%9%84%6%34,939
Donegal11%10%85%7%23,844
Ireland24%15%67%6%549,459

Homes built before 2011 on SEAI's BER register with a known main wall type, leaving out BERs done for grant claims (SEAI BER register, our sums). Sorted from the most solid and hollow block walls.

County pages

Per-county detail on our sister sites

The county pages on cavitywallinsulation.ie, with the same register, the towns, heating and Census 2022 figures.

Grant check

Your wall grant and what's left to pay

Three taps: the wall job, your home, and which rate fits you. The answer is SEAI's fixed grant and its own median cost for the job.

Wall job
Your home
Which fits you?

Your SEAI wall insulation grant

€3,500

SEAI median cost, Jan to Jun 2026
€9,843
Left to pay at the median
€6,343

SEAI's fixed internal (dry lining) grant for a semi-d or end of terrace at the standard rate is €3,500 (Citizens Information and SEAI, 2 November 2026). SEAI's median cost for that job on a semi-d or end of terrace, January to June 2026, was €9,843. €9,843 less €3,500 leaves about €6,343. Our sum; your quote can be higher or lower.

Send this for a real price
How this is worked out

The grant is SEAI's fixed amount for that wall job and home type, as SEAI's wall insulation page and Citizens Information (Citizens Information, updated 22 October 2026) list it. The higher rate applies to cavity walls only. The median cost is SEAI's own figure from grant-funded jobs completed between January and June 2026 (SEAI median costs); the PDF doesn't say whether VAT is in. Left to pay is the median less the grant, our sum. The home must have been built and lived in before 2011, every external wall must be done, the contractor must be on SEAI's register, and SEAI must approve the grant before work starts. It's an estimate, never a quote.

Your grant

Your wall grant and a price, in 4 taps

Tap your home, which wall job you think it needs, when it was built and which rate fits you. Then leave your number and one SEAI-registered insulation contractor who covers your area rings you to look at the walls and price it in writing.

What type of home is it?

SEAI pays a fixed amount for each type of home.

By sending, you agree to Wall Insulation Grants passing your details to one SEAI-registered insulation contractor who covers your area, so they can contact you about the job. wallinsulationgrants.ie is not SEAI or a government body and does not award grants. Privacy notice

FAQ

Questions people ask

Is the wall insulation grant different by county?

No. SEAI's fixed grants are national.

Why does Dublin have so many solid walls?

43% of Dublin's certificates with a known wall type show solid or hollow block walls, against 24% nationally (SEAI BER register). The register doesn't say why; it records the wall, not the reason.

Where are the county pages?

Our sister sites have them: cavity wall insulation by county and house wrap by county.

Keep reading

Related guides

Where these numbers come from (4 public sources, checked 2 November 2026)
  1. SEAI BER Research Tool, full public file (downloaded 29 October 2026, our sums)
  2. SEAI, wall insulation grant page
  3. Citizens Information, Better Energy Homes Scheme (page updated 22 October 2026)
  4. SEAI, individual energy upgrades: median costs and fixed grants, January to June 2026, 23,412 upgrades (PDF)