External wall insulation installers in Cork
130 companies on SEAI's register say they do external wall insulation in Cork. Only work by a registered company gets the SEAI grant.
- 22 are based in Cork; the other 108 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 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
About 10 seconds. See your numbers first, then get quotes if you want them.
Based in Cork
22 of them, from SEAI's register (read 25 September 2026). Not an order of merit. Published figure
- Ashgrove Engineering Ltd T/A Ashgrove RenewablesOne Stop ShopAttic insulationCavity wall insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationSolar hot waterSolar panelWindow and doorBased in Cork.
- Envirobead Ltd.One Stop ShopAttic insulationCavity wall insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationSolar hot waterWindow and doorBased in Cork.
- Kilgobbin Castle Holdings Ltd t/a InsulexOne Stop ShopAttic insulationCavity wall insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationSolar hot waterWindow and doorBased in Cork.
- Munster External Wall Insulation T/A SE SystemsOne Stop ShopAttic insulationCavity wall insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationSolar hot waterSolar panelWindow and doorBased in Cork.
- Ability Contracting LtdAttic insulationExternal wall insulationInternal wall insulationBased in Cork.
- Anthony Coughlan Heating & Plumbing TA C&S Construction ServicesAttic insulationCavity wall insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationSolar hot waterWindow and doorBased in Cork.
- B & T External Insulation & Plastering LtdAttic insulationExternal wall insulationInternal wall insulationBased in Cork.
- C & W InsulationsAttic insulationCavity wall insulationExternal wall insulationBased in Cork.
- Grainger Energy Solutions LtdAttic insulationExternal wall insulationInternal wall insulationBased in Cork.
- Heffernan Brothers Contractors HBC LtdAttic insulationExternal wall insulationInternal wall insulationBased in Cork.
- HPC Plasterers Limited T/A Holland InsulationAttic insulationExternal wall insulationInternal wall insulationBased in Cork.
- J.D. Buckley Construction LtdAttic insulationCavity wall insulationExternal wall insulationInternal wall insulationWindow and doorBased in Cork.
- Keith Im Cork Plastering Ltd.External wall insulationBased in Cork.
- L P M Contracting LtdExternal wall insulationInternal wall insulationBased in Cork.
- MS Plastering ContractorAttic insulationExternal wall insulationInternal wall insulationBased in Cork.
- OS Insulate LtdAttic insulationCavity wall insulationExternal wall insulationInternal wall insulationBased in Cork.
- P&T Complete Renovations LtdAttic insulationExternal wall insulationInternal wall insulationBased in Cork.
- Scott Shellard Construction LimitedAttic insulationExternal wall insulationInternal wall insulationBased in Cork.
- SHBC LimitedExternal wall insulationHeat pumpHeating controlsBased in Cork.
- Sloane Plastering LTDExternal wall insulationInternal wall insulationBased in Cork.
- Titan Homes LtdAttic insulationExternal wall insulationInternal wall insulationBased in Cork.
- Wall 2 Wall ConstructionAttic insulationExternal wall insulationInternal wall insulationBased in Cork.
Also cover Cork from elsewhere (108)
These told SEAI they cover the province Cork 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.
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) · Energywise Ireland (OSS) · Greenwatt Ltd (OSS) · House 2 Home Retrofit Ltd (OSS) · Kingdom Installation Ltd (OSS) · Kingspan Insulation Ltd (OSS) · Kore Retrofit Ltd (OSS) · Leetherm Project Management Ltd (OSS) · Moston Construction Ltd (OSS) · OHK Energy LTD (OSS) · Retrofit Design Ltd (OSS) · Retrofit Energy Ireland (OSS) · SSE Airtricity Energy Services Ltd (OSS) · A & D External Wrap Ltd · Absolute Acrylics Ltd · Aerofill Insulation · Algricris Construction Ltd · All Weather Insulation · Alpha Insulation Ltd T/A Western Insulation · Ap Eco Building & Renovation · AR 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 · 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 · Cosyfill Insulation · 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 · Green Air Technologies Ltd · Greentech Insulations Waterford ltd Greentech Facades · Hamkel Holdings Ltd / Soltherm · Harrington Insulations Limited · Harry Twomey Plastering · Home Building Solutions T/A HBS Elegant build Ltd · Hughes and Co External Insulation · Inglotherm Ltd · Insulate Ireland · J&J Plastering · Jacob Insulation Limited · John Skehan Services Ltd · Kieran Walsh Building & Plastering Ltd · Kilmallock Developments Ltd · Leetherm Insulation Ltd. · Leitrim Warmer Homes CLG · Madden Developments Ltd · Marcus Turner · McCaher Construction Ltd. · Metro Insulation Ltd · Moran Retrofit Solutions · National Retrofit & Construction Services Ltd · Novin Consultants Ltd · Ormond Plastering · 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 · RMC Ecobuild Ltd · SBN Solid Home Ltd · Sheehy Insulation Ltd · Solar Direct Ltd. · Solaregy T/A Sola · Solid Insulation Systems Ireland Ltd · Sovereign Finishes Limited · Spreadwell Construction Ltd · Stone Arches LTD T/A Waterford Insulation · Superior Insulations Ltd · The Best Insulation · Thomas Harrington Heating & Plumbing Ltd · Tirconaill Contracts Ltd T/A Mc Taggart Insulation · TLI Group Ltd T/A Transmission Links Ireland Ltd · Tomasz Rulak T/A Tombet Building
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.
The detail
How Cork compares
External wall insulation installers who say they work in each county, from SEAI's register. Published figure
130 external wall insulation installers say they work in Cork; the median county has 132
Cork is 16th of 26. The most list Dublin (175); the fewest, Donegal (76). 23 One Stop Shops list Cork.
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 Cork 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.
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 Cork?
- 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 Cork 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 · grants checked · register read 25 Sep 2026 · How we know · Corrections