Do I have to use one of these companies to get the grant?

Yes. SEAI only pays a grant on work done by a company on its register, and the company claims it on your behalf. Work done by anyone else is not covered, however good it is.

How many quotes should I get in Limerick?

Three, from companies registered for the same job, and ask each for a written breakdown. Quotes for the same house often differ by thousands because they include different work, not because one is dearer.

Is this list in any order of merit?

No. Companies based in Limerick come first, then the ones that travel to it, then One Stop Shops, then alphabetical. Being on the register means the paperwork is in order, not that the work is good.

External wall insulation installers in Limerick

131 companies on SEAI's register say they do external wall insulation in Limerick. Only work by a registered company gets the SEAI grant.

7 are based in Limerick; the other 124 cover it from elsewhere.
The grant for a semi-detached house is €6,000. SEAI’s middle price last year was €23,219.
Get SEAI’s grant approval before any work starts. SEAI does not pay for work that began first.
Get three written quotes for the same job. This list is not a ranking.

A terrace of single-storey homes under scaffolding and pink debris netting, the roof stripped back. — A terrace of bungalows under scaffolding for wall insulation. Photographed in Hull, England.
Garrick Close, Kingston upon Hull: bungalow renovations, September 2023 · Hullian111 · CC BY-SA 4.0

See your grants for wall insulation, and what you’d pay

Check my home

About 10 seconds. See your numbers first, then get quotes if you want them.

Based in Limerick

7 of them, from SEAI's register (read 25 September 2026). Not an order of merit. Published figure

Aerofill InsulationAttic insulationExternal wall insulationInternal wall insulationBased in Limerick · serves Munster · SEAI no. 15043Based in Limerick.
Cosyfill InsulationAttic insulationCavity wall insulationExternal wall insulationInternal wall insulationBased in Limerick · serves Munster · SEAI no. 14840Based in Limerick.
Madden Developments LtdAttic insulationExternal wall insulationInternal wall insulationNationwide · SEAI no. 15502Based in Limerick.
Novin Consultants LtdExternal wall insulationBased in Limerick · serves Dublin, Leinster, Munster and Connacht · SEAI no. 16422Based in Limerick.
RMC Ecobuild LtdAttic insulationExternal wall insulationHeating controlsInternal wall insulationBased in Limerick · serves Munster and Connacht · SEAI no. 16013Based in Limerick.
Spreadwell Construction LtdCavity wall insulationExternal wall insulationInternal wall insulationBased in Limerick · serves Dublin, Leinster, Munster and Connacht · SEAI no. 10746Based in Limerick.
The Best InsulationAttic insulationExternal wall insulationInternal wall insulationBased in Limerick · serves Leinster and Munster · SEAI no. 15097Based in Limerick.

Also cover Limerick from elsewhere (124)

These told SEAI they cover the province Limerick is in, or listed it among the counties they serve. Ask how far they travel before you go any further. Names only here; each one’s full register row is on its own county’s page. OSS = One Stop Shop.

Ashgrove Engineering Ltd T/A Ashgrove Renewables (OSS) · Bayview Contracts Ltd (OSS) · Bord Gais Energy Ltd (OSS) · Breffni Insulation Ltd (OSS) · CBM Munster Construction T/A Home Energy Retrofits (OSS) · Churchfield Home Services (OSS) · Electric Ireland Superhomes (OSS) · Energlaze Home Energy Upgrades (OSS) · Energyfix (OSS) · Energywise Ireland (OSS) · Envirobead Ltd. (OSS) · Greenwatt Ltd (OSS) · House 2 Home Retrofit Ltd (OSS) · Kilgobbin Castle Holdings Ltd t/a Insulex (OSS) · Kingdom Installation Ltd (OSS) · Kingspan Insulation Ltd (OSS) · Kore Retrofit Ltd (OSS) · Leetherm Project Management Ltd (OSS) · Moston Construction Ltd (OSS) · Munster External Wall Insulation T/A SE Systems (OSS) · OHK Energy LTD (OSS) · Retrofit Design Ltd (OSS) · Retrofit Energy Ireland (OSS) · SSE Airtricity Energy Services Ltd (OSS) · A & D External Wrap Ltd · Ability Contracting Ltd · Absolute Acrylics Ltd · Algricris Construction Ltd · All Weather Insulation · Alpha Insulation Ltd T/A Western Insulation · Anthony Coughlan Heating & Plumbing TA C&S Construction Services · Ap Eco Building & Renovation · AR Plastering Ltd · B & T External Insulation & Plastering Ltd · Ballinderry Developments Ltd T/A Rebuild · Better Me Ltd Ta North Shield Insulation · BR Insulation t/u Robert O'Brien & Son Ltd · Brosnan Plastering & Insulation Systems Ltd · C & B Cormican Building Contractors Ltd · C & W Insulations · Carlow Insulation Solutions · Century Retrofit Ltd · Ciocan Construction Ltd · CK Energy Management Solutions (EMS) Ltd t/a ENCON · Clare Insulation · Comfort Living Limited · Conor Phelan Construction Ltd · CW Xterior Solutions Ltd · D&E External Insulation Ltd · Damien Ryan Contracts Ltd · David Flaherty Construction LTD · DC Energy Solutions · Declan Fahy Plastering LTD · Derchil Limited t/a CosiHomes · DJH INSULATION LTD · Dublin All Trades Building Services · Duey Brothers Ltd · Eco Pro Insulation · Eco Smart External Insulation Ltd · Eco Thermal Homes · Ecomax Construction Services Ltd · Eirgreen · Elitetherm · Energy Retrofit Ireland · Finlay EcoFit Tullamore Ltd · Floelen Construction Ltd · Grainger Energy Solutions Ltd · Green Air Technologies Ltd · Greentech Insulations Waterford ltd Greentech Facades · Hamkel Holdings Ltd / Soltherm · Harrington Insulations Limited · Harry Twomey Plastering · Heffernan Brothers Contractors HBC Ltd · Home Building Solutions T/A HBS Elegant build Ltd · HPC Plasterers Limited T/A Holland Insulation · Hughes and Co External Insulation · Inglotherm Ltd · Insulate Ireland · J.D. Buckley Construction Ltd · J&J Plastering · Jacob Insulation Limited · John Skehan Services Ltd · Keith Im Cork Plastering Ltd. · Kieran Walsh Building & Plastering Ltd · Kilmallock Developments Ltd · L P M Contracting Ltd · Leetherm Insulation Ltd. · Leitrim Warmer Homes CLG · Marcus Turner · McCaher Construction Ltd. · Metro Insulation Ltd · Moran Retrofit Solutions · MS Plastering Contractor · National Retrofit & Construction Services Ltd · Ormond Plastering · OS Insulate Ltd · P&T Complete Renovations Ltd · Pa Home Renovations · Paddy Kilduff and Sons Builders Ltd TA Kilduff Con · Paudie Sheehy · Pro Walls Ltd · Quilter Insulation · Raphael Considine Construction · Reflat Insulation Ltd · Rend Master Ltd · Richard Mc Mahon & Warmer Homes · Rio Ents Ltd ta A-Rate · SBN Solid Home Ltd · Scott Shellard Construction Limited · SHBC Limited · Sheehy Insulation Ltd · Sloane Plastering LTD · Solar Direct Ltd. · Solaregy T/A Sola · Solid Insulation Systems Ireland Ltd · Sovereign Finishes Limited · Stone Arches LTD T/A Waterford Insulation · Superior Insulations Ltd · Thomas Harrington Heating & Plumbing Ltd · Tirconaill Contracts Ltd T/A Mc Taggart Insulation · Titan Homes Ltd · TLI Group Ltd T/A Transmission Links Ireland Ltd · Tomasz Rulak T/A Tombet Building · Wall 2 Wall Construction

See your grants and what you’d pay

Four questions about your home, then your numbers. Get quotes from registered contractors if you want them.

Check my home

The detail

How Limerick compares

External wall insulation installers who say they work in each county, from SEAI's register. Published figure

Figure 1Published figure

131 external wall insulation installers say they work in Limerick; the median county has 132

Limerick is 14th of 26. The most list Dublin (175); the fewest, Donegal (76). 24 One Stop Shops list Limerick.

Limerick131
The median county132
Most: Dublin175
Fewest: Donegal76

Each bar counts companies on SEAI's register that list the county for external wall insulation. Many firms tick a whole province, so counts move in regional steps. A count is choice, not capacity. Registration is paperwork, not a review of their work.

Sources: SEAI home energy, One Stop Shop and solar registers, read 25 Sep 2026

What it costs, and what the grant pays

National figures, not Limerick ones: SEAI does not publish prices by county. SEAI rule

On a semi-detached house, SEAI's middle price of €23,219 less the grant leaves €17,219 to pay.

Before you sign

Four things SEAI tells homeowners to do.

Wait for your grant approval email before any work starts. SEAI does not pay for work that began before it was approved.
Get at least three quotes, and check each one covers the same job. The cheapest quote is often the one that leaves something out.
Check the company is on the register on the day you sign. Companies join and leave it, and this page is a copy taken on one day.
Get it in writing: what is being done, what it costs, when it starts and when it is finished.

How the application works →

Questions people ask

Do I have to use one of these companies to get the grant?: Yes. SEAI only pays a grant on work done by a company on its register, and the company claims it on your behalf. Work done by anyone else is not covered, however good it is.
How many quotes should I get in Limerick?: Three, from companies registered for the same job, and ask each for a written breakdown. Quotes for the same house often differ by thousands because they include different work, not because one is dearer.
Is this list in any order of merit?: No. Companies based in Limerick come first, then the ones that travel to it, then One Stop Shops, then alphabetical. Being on the register means the paperwork is in order, not that the work is good.

Listed on SEAI’s public registers on 25 September 2026. Being registered is not an endorsement by SEAI or by us. Check the current register on seai.ie before you sign anything. Not affiliated with SEAI. On this list? Get homeowner plans to quote for

Updated 5 October 2026 · grants checked 10 Oct 2026 · register read 25 Sep 2026 · How we know · Corrections