External wall insulation installers in Cork
128 companies on the SEAI register are based in or serve Cork for external wall insulation (register as of 8 September 2026).
Based in Cork
22 of them. Sorted by what they are registered for, then by name — this is not an order of merit.
- Ashgrove Engineering Ltd T/A Ashgrove RenewablesOne Stop Shop
Attic insulationCavity wall insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationSolar hot waterSolar panelWindow and door
Nationwide · SEAI no. 12010 · Website
Based in Cork. - Envirobead Ltd.One Stop Shop
Attic insulationCavity wall insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationSolar hot waterWindow and door
Nationwide · SEAI no. 10218 · Website
Based in Cork. - Kilgobbin Castle Holdings Ltd t/a InsulexOne Stop Shop
Attic insulationCavity wall insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationSolar hot waterWindow and door
Based in Cork · serves Dublin and Munster · SEAI no. 10496 · Website
Based in Cork. - Munster External Wall Insulation T/A SE SystemsOne Stop Shop
Attic insulationCavity wall insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationSolar hot waterSolar panelWindow and door
Based in Cork · serves Dublin and Munster · SEAI no. 14825 · Website
Based in Cork. - Ability Contracting Ltd
Attic insulationExternal wall insulationInternal wall insulation
Based in Cork · serves Munster · SEAI no. 17915
Based in Cork. - Anthony Coughlan Heating & Plumbing TA C&S Construction Services
Attic insulationCavity wall insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationSolar hot waterWindow and door
Nationwide · SEAI no. 10791
Based in Cork. - B & T External Insulation & Plastering Ltd
Attic insulationExternal wall insulationInternal wall insulation
Based in Cork · serves Munster · SEAI no. 16148
Based in Cork. - C & W Insulations
Attic insulationCavity wall insulationExternal wall insulation
Based in Cork · serves Leinster and Munster · SEAI no. 10016
Based in Cork. - Ecowrap
Attic insulationExternal wall insulationInternal wall insulation
Based in Cork · serves Dublin, Leinster, Munster and Connacht · SEAI no. 18056
Based in Cork. - Grainger Energy Solutions Ltd
Attic insulationExternal wall insulationInternal wall insulation
Based in Cork · serves Dublin, Leinster, Munster and Connacht · SEAI no. 12703
Based in Cork. - Heffernan Brothers Contractors HBC Ltd
Attic insulationExternal wall insulationInternal wall insulation
Based in Cork · serves Munster · SEAI no. 17092
Based in Cork. - J.D. Buckley Construction Ltd
Attic insulationCavity wall insulationExternal wall insulationInternal wall insulationWindow and door
Based in Cork · serves Munster · SEAI no. 10095
Based in Cork. - Keith Im Cork Plastering Ltd.
External wall insulation
Based in Cork · serves Munster · SEAI no. 17577
Based in Cork. - L P M Contracting Ltd
External wall insulationInternal wall insulation
Based in Cork · serves Munster · SEAI no. 17955
Based in Cork. - MS Plastering Contractor
Attic insulationExternal wall insulationInternal wall insulation
Nationwide · SEAI no. 17116
Based in Cork. - OS Insulate Ltd
Attic insulationCavity wall insulationExternal wall insulationInternal wall insulation
Based in Cork · serves Munster · SEAI no. 15563
Based in Cork. - P&T Complete Renovations Ltd
Attic insulationExternal wall insulationInternal wall insulation
Based in Cork · serves Munster · SEAI no. 16867
Based in Cork. - Scott Shellard Construction Limited
Attic insulationExternal wall insulationInternal wall insulation
Based in Cork · serves Munster · SEAI no. 17862
Based in Cork. - SHBC Limited
External wall insulationHeat pumpHeating controls
Based in Cork · serves Munster · SEAI no. 10204
Based in Cork. - Sloane Plastering LTD
External wall insulationInternal wall insulation
Based in Cork · serves Dublin, Leinster and Munster · SEAI no. 12921
Based in Cork. - Titan Homes Ltd
Attic insulationExternal wall insulationInternal wall insulation
Based in Cork · serves Munster · SEAI no. 13804
Based in Cork. - Wall 2 Wall Construction
Attic insulationExternal wall insulationInternal wall insulation
Based in Cork · serves Munster · SEAI no. 17042
Based in Cork.
Also cover Cork from elsewhere (106)
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 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 · Alan Murphy Construction Ltd T/A AM Construction · Algricris Construction Ltd · All Weather 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 · 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 · G.V.Services Limited · 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 · Peter Brereton Plastering · Pro Walls Ltd · Quilter Insulation · Raphael Considine Construction · Reflat Insulation Ltd · Rend Master Ltd · Richard Mc Mahon & Warmer Homes · RMC Ecobuild Ltd · SBN Solid Home Ltd · Sheehy Insulation 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 · Tirconaill Contracts Ltd T/A Mc Taggart Insulation · TLI Group Ltd T/A Transmission Links Ireland Ltd · Tomasz Rulak T/A Tombet Building
What it costs, and what the grant pays
The grant for a semi-detached house is €6,000. SEAI recorded a middle price of €23,247 for this work last year, which leaves about €17,247 for you to pay. These are national figures, not Cork ones — SEAI does not publish prices by county.
What it costs on a home like yours, and what you are left paying
Before you sign
- 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.
Ask up to five of them
Fill in one form, tick who you want to hear from, and we pass your details to those companies and nobody else. It costs nothing and you are under no obligation.
Get external wall insulation quotes in CorkCommon questions
- 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.
Other work in Cork
Listed on SEAI’s public registers on 8 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.