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.

Internal wall insulation installers in Limerick

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

19 are based in Limerick; the other 304 cover it from elsewhere.
The grant for a semi-detached house is €3,500. SEAI’s middle price last year was €9,843.
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.

Insulation boards fixed to the outside walls of a terrace mid-job, meter boxes hanging clear of the wall. — Insulation boards fixed to the walls of a terrace mid-job. Photographed in Hull, England.
Garrick Close, Kingston upon Hull: bungalow renovations, November 2023 · Hullian111 · CC BY-SA 4.0

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

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

Based in Limerick

19 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.
Alc Construction LimitedAttic insulationInternal wall insulationBased in Limerick · serves Dublin and Munster · SEAI no. 17916Based in Limerick.
Behan Builders Shanagolden Ltd.Attic insulationInternal wall insulationBased in Limerick · serves Munster · SEAI no. 17665Based in Limerick.
Caherass Plastering LtdInternal wall insulationBased in Limerick · serves Munster and Connacht · SEAI no. 18000Based in Limerick.
Con Horgan & Sons Ltd T/A Horgan RenewablesAttic insulationHeat pumpInternal wall insulationBased in Limerick · serves Munster · SEAI no. 11250Based in Limerick.
Connolly Building & Renovations LtdAttic insulationInternal wall insulationBased in Limerick · serves Munster · SEAI no. 16655Based in Limerick.
Cosyfill InsulationAttic insulationCavity wall insulationExternal wall insulationInternal wall insulationBased in Limerick · serves Munster · SEAI no. 14840Based in Limerick.
Eugene BrouderAttic insulationInternal wall insulationBased in Limerick · serves Munster · SEAI no. 15005Based in Limerick.
Fmk DevelopmentsAttic insulationInternal wall insulationBased in Limerick · and 11 other counties · SEAI no. 18288Based in Limerick.
Foster ConstructionAttic insulationInternal wall insulationBased in Limerick · serves Munster · SEAI no. 10127Based in Limerick.
JJ Carr Construction LtdInternal wall insulationBased in Limerick · serves Munster · SEAI no. 18301Based in Limerick.
John Ryan Premier Construction LtdAttic insulationInternal wall insulationBased in Limerick · serves Munster · SEAI no. 20089Based in Limerick.
M & K Interiors LtdAttic insulationInternal wall insulationBased in Limerick · serves Munster · SEAI no. 15863Based in Limerick.
Madden Developments LtdAttic insulationExternal wall insulationInternal wall insulationNationwide · SEAI no. 15502Based in Limerick.
Neil Hogan Building ContractorAttic insulationInternal wall insulationBased in Limerick · serves Munster · SEAI no. 20195Based 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.
Tommy AllenInternal wall insulationWindow and doorBased in Limerick · serves Munster · SEAI no. 20130Based in Limerick.

Also cover Limerick from elsewhere (304)

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) · AB Teague Enterprises Ltd · Ability Contracting Ltd · Absolute Acrylics Ltd · AGI Construction Ltd · Aidan Mccarthy Construction Ltd · Airpacks T/A Kore Insulation · AL Plastering & Building Contractor · All In Insulation · All Weather Insulation · Allied Irish Property Ltd · Alpha Insulation Ltd T/A Western Insulation · Annex Building Renovation Ltd · Anthony Coughlan Heating & Plumbing TA C&S Construction Services · Anthony Morahan Plumbing & Heating Ltd · Ap Eco Building & Renovation · Apex Engineering · Auro Naes Ltd T/A Roesavin Construction · B & T External Insulation & Plastering Ltd · Ballinamintra Building Services Ltd · Ballinderry Developments Ltd T/A Rebuild · Ballyhogan Plumbing Services Ltd · Bd Partitions + Ceilings Ltd · BK Modern Build Ltd · BR Insulation t/u Robert O'Brien & Son Ltd · Brendan Maher & Sons Construction Ltd · Brendan Moloney Carpentry · Brendan Shanahan · Brian Foley Construction Ltd · Brian Healy Carpentry Ltd T/A Healy Construction · Brian Smith Heating & Plumbing Ltd · Bromur Energy Ltd · Brosnan Plastering & Insulation Systems Ltd · Budget Renovations · Byrne & Byrne Construction · C & B Cormican Building Contractors Ltd · C&H Building Contractors Limited · C&Y Renovations Ltd · CA Energy Ltd · Cadogan Construction · Carew Construction Ltd · Carlow Insulation Solutions · Cellulose Insulation Ltd · Century Retrofit Ltd · Christopher Doona Heating & Plumbing Contractor · Ciocan Construction Ltd · CK Energy Management Solutions (EMS) Ltd t/a ENCON · Clar ICH Ltd · Clare Insulation · Clifford Roofing And Contracting Ltd · Colm And Michael Dunne · Comfort Living Limited · Conneally Painting & Sons Trading As Conneally Group · Connole Construction Ltd · Conor Phelan Construction Ltd · Coolim Construction Ltd · Coolyduff Construction Ltd · Corrib View Construction Ltd · Culmc Constructiuon LTD TA JMC Construction · CW Xterior Solutions Ltd · D Dwyer Builders Ltd · D&E External Insulation Ltd · Dalmoy Limited · Dalvac Systems Limited · Damien Ryan Contracts Ltd · Dave Fitzgerald Contracts Ltd · David Doyle Construction Limited · David Flaherty Construction LTD · David O'Flynn Construction T/A Petram Construction · David O'Sullivan · Db Carpentry · DC Energy Solutions · De Courcy'S Bridge Ltd · Declan Buggy LTD · Declan Fahy Plastering LTD · Deep Retrofit Ltd · Derchil Limited t/a CosiHomes · Derek Curtin Ltd. · DJH INSULATION LTD · DKS Construction Ltd · Dncf · Donal A O'Brien Building Ltd · Doyle Construction Cork · DSL Construction · Dublin All Trades Building Services · Duey Brothers Ltd · Dunmanus Construction Ltd · Dunne Drylining Ltd · Eco Home Insulation · Eco Pro Insulation · Eco Smart External Insulation Ltd · Eco Thermal Homes · Ecosy Better Homes Ltd · Ecowise Insulation Ltd · Edward Eccleston · Eirgreen · Eitas · EJP Concrete Structures Ltd · Elem Construction Ltd T/A Inish Contracts · Elitetherm · Energy Retrofit Ireland · Energywise Savings Ireland Ltd · Evertherm Ltd T/A Annalee Energy Ltd · Finbarr McMahon Carpentry/Construction · Finlay EcoFit Tullamore Ltd · Finloc Renovations Ltd T/A Finloc Construction · Floelen Construction Ltd · Forma Design & Build Ltd · Garry McCarthy Construction Ltd · GjMurray ConstructionT/AFrank Murray Construction · Glen Construction Design Ltd · Glenwood Preservation Ltd · Goleen Developments Ltd · Goode Energy · Grainger Energy Solutions Ltd · Grangebarry Construction Ltd · Green Air Technologies Ltd · Grouville Developments Ltd · Hamkel Holdings Ltd / Soltherm · Harrington Hbrs Ltd · Harrington Insulations Limited · Harry Twomey Plastering · Heffernan Brothers Contractors HBC Ltd · Henry Connolly Builder Ltd. · Home Building Solutions T/A HBS Elegant build Ltd · Home Works Insulation · HPC Plasterers Limited T/A Holland Insulation · Hughes and Co External Insulation · Inglotherm Ltd · Innovate Insulation Ltd · Insulate Ireland · IRD Duhallow · J Shaw Carpentry Ltd · J.D. Buckley Construction Ltd · J&C McMahon · J&J Plastering · Jacob Insulation Limited · Jason Connellan Construction Ltd · JBS Construction Ltd · Jf Fordham Construction Ltd · Jm Energy Savings Limited · Joe Dunican Plumbing And Heating Ltd · John O'Loughlin & Son Ltd · John Ryan Construction Ltd. · John Somers Construction Ltd · John Taylor Construction Ltd · Jon O 'Neill Construction Limited · K K Home & Building Services Ltd · K&D Developments (Sligo) Ltd. · Kanto Property Services · Kelly Insulation Heating & Plumbing · Kereen Building Services · Kesel Construction Ltd · Kg Future Homes Limited · Kh Energy Services Limited · Kieran Walsh Building & Plastering Ltd · Kilmallock Developments Ltd · Kilrehill Bros · Kingscourt Insulation Ltd · Kirrane Engineering Limited · L P M Contracting Ltd · Labcon Building And Civil Engineering Limited · LDS INTERIORS LTD · Leetherm Insulation Ltd. · Leitrim Warmer Homes CLG · LF Building Services T/A Fennery construction ltd · Liam Hokey · M Fox & WM O'Rourke Construction Ltd · M-G Construction Services · M&W Fire Solutions Ltd · MAK Building Services Ltd · Mardoc Holdings Limited · Markaye Contracts Ltd · Matthew Rice T/A Mattie Rice Carpentry · McCaher Construction Ltd. · McInerney and Keane Insulation · Measure 2 Build Ltd · Metro Utilities Ltd T/A Metro Developments · Michael Considine · Michael Murphy Construction · Michael Ormond Ltd · Midland Warmer Homes Company Limited · Mike Sugrue Building Contractors · MJ O'Doherty Ltd · Mjkhomes Galway Ltd · Momentum Construction LTD · Monanore Construction Ltd · MS Plastering Contractor · Muggivan Brothers Construction Ltd · Multi Corp Construction Services Ltd · Mulway Construction Limited · Nc Carpentry & Construction Ltd · NCE Insulation T/A Secure and Fix It Enterprises · Ned Grant and Sons · Nexgen Developments LTD · Nexus Building & Civil Engineering Ltd · Noel Hennessy Construction Ltd · Noel Leahy Carpentry & Building Services Limited · O Leary Insulation · O Mahony Renewable Solutions Ltd · O'Loughlin Construction · Ocon Plastering Ltd · Odl Homes Ltd · Ora Timber Frame · Oriel Insulations · OS Insulate Ltd · P&T Complete Renovations Ltd · Paddy Kilduff and Sons Builders Ltd TA Kilduff Con · Parker Construction Ltd · Pat Dineen T/A Hamilton French · Pat Enright Glass And Glazing Ltd · Pat F Murphy · Pat Loftus Construction Ltd · Patrick Sheehan Construction · Paudie Sheehy · Phelan Construction · Philly Burke Carpentry, Painting & Building · Poly Coating and Sealing Ltd · Pouldoon Construction Ltd · PPGIH Business Ltd t/a Premier Irish Homes · Premier Insulations · Primabuild Ltd · Pro Walls Ltd · Probuild Building Services Ltd · Quilter Insulation · Raphael Considine Construction · Redfern Construction Ltd · Reflat Insulation Ltd · Reidy Plastering and Insulation Contractors · Rend Master Ltd · Renova · Renual Construction Limited · Retrofit Energy Ireland One Stop Shop Ltd · Richard Harte Building & Plastering Services Ltd · Richard Mc Mahon & Warmer Homes · Rio Ents Ltd ta A-Rate · Riverbank JC Holdings Ltd · RS Construction · Ryan Spray Foam · Salix Construction Ltd · SBN Solid Home Ltd · SCMS Mechanical Services Ltd · Scott Shellard Construction Limited · Sean Fitzgerald Ceilings & Partitions Ltd · Sean Lilley Construction Limited · Sigma Homes Ltd · Sloane Plastering LTD · SLP Westport · SMB Construction · Smyth Project Management Ltd. T/A Teknabuild · Solar Direct Ltd. · Solaregy T/A Sola · Solid Insulation Systems Ireland Ltd · Sovereign Finishes Limited · Springridge Construction Ltd · Stephen Doherty · Stephen Mc Grath · Stephen Murphy Plumbing & Heating Ltd · Stone Arches LTD T/A Waterford Insulation · Superior Insulations Ltd · Sustainable Warmth Ltd · T & A Plant Hire · Tallis And Co Ltd · Tamburah Limited · Thermo Renewables Limited · Thomas O Connor · Tim O'Leary Spray Foam Ltd · Timahoe Construction T/A Leinster Property Service · Tirconaill Contracts Ltd T/A Mc Taggart Insulation · Titan Homes Ltd · TLI Group Ltd T/A Transmission Links Ireland Ltd · TMC Construction · Tomasz Rulak T/A Tombet Building · Tony McKeon Carpentry & Building Services · Treacon Carpentry & Building Services Ltd · Trevor Kelliher Constuction · Verde Remediation Services Ltd · Vincent Bergin & Sons Limited · Vinro Ltd · Wall 2 Wall Construction · Weglarz 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

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

Figure 1Published figure

323 internal wall insulation installers say they work in Limerick; the median county has 323

Limerick is 13th of 26. The most list Wicklow (462); the fewest, Donegal (196). 24 One Stop Shops list Limerick.

Limerick323
The median county323
Most: Wicklow462
Fewest: Donegal196

Each bar counts companies on SEAI's register that list the county for internal 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 €9,843 less the grant leaves €6,343 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