External wall insulation installers in Donegal
76 companies on SEAI's register say they do external wall insulation in Donegal. Only work by a registered company gets the SEAI grant.
- 12 are based in Donegal; the other 64 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 Donegal
12 of them, from SEAI's register (read 25 September 2026). Not an order of merit. Published figure
- B. Donaghey & SonsAttic insulationExternal wall insulationInternal wall insulationWindow and doorBased in Donegal.
- BCBAL Ltd T/A McGee InsulationAttic insulationCavity wall insulationExternal wall insulationInternal wall insulationBased in Donegal.
- Carrickmaquigley Construction LtdAttic insulationExternal wall insulationInternal wall insulationBased in Donegal.
- Derryveagh Contracts LtdAttic insulationExternal wall insulationInternal wall insulationBased in Donegal.
- DMT Renewables LtdAttic insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationBased in Donegal.
- Duey Brothers LtdAttic insulationExternal wall insulationInternal wall insulationBased in Donegal.
- Insulate IrelandAttic insulationExternal wall insulationInternal wall insulationBased in Donegal.
- Johnathan Timoney T/A Rendpro LtdExternal wall insulationInternal wall insulationBased in Donegal.
- Mc Menamin Building Contractors LtdAttic insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationWindow and doorBased in Donegal.
- Rmn Developments LtdAttic insulationExternal wall insulationInternal wall insulationBased in Donegal.
- Tirconaill Contracts Ltd T/A Mc Taggart InsulationAttic insulationCavity wall insulationExternal wall insulationHeat pumpInternal wall insulationWindow and doorBased in Donegal.
- Tuatha ConstructionAttic insulationExternal wall insulationInternal wall insulationBased in Donegal.
Also cover Donegal from elsewhere (64)
These told SEAI they cover the province Donegal 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) · Churchfield Home Services (OSS) · Cooper Insulation Ltd. (OSS) · Electric Ireland Superhomes (OSS) · Envirobead Ltd. (OSS) · Greenwatt Ltd (OSS) · House 2 Home Retrofit Ltd (OSS) · Kingdom Installation Ltd (OSS) · Kingspan Insulation Ltd (OSS) · Kore Retrofit Ltd (OSS) · Moston Construction Ltd (OSS) · OHK Energy LTD (OSS) · Retrofit Design Ltd (OSS) · Retrofit Energy Ireland (OSS) · SSE Airtricity Energy Services Ltd (OSS) · Algricris Construction Ltd · Anthony Coughlan Heating & Plumbing TA C&S Construction Services · Ap Eco Building & Renovation · Bluebuild Renewables Ltd · Ciocan Construction Ltd · Comfort Living Limited · CW Xterior Solutions Ltd · D Carry Construction · DC Energy Solutions · Decarb Contracts Ltd · Derchil Limited t/a CosiHomes · Ds Fallon · Eco Pro Insulation · Eco Smart External Insulation Ltd · Eco Thermal Homes · Floelen Construction Ltd · Gmg Contracts Ltd · Green - Lux Construction Ltd · Green Air Technologies Ltd · Hamkel Holdings Ltd / Soltherm · Home Building Solutions T/A HBS Elegant build Ltd · Jacob Insulation Limited · JJR Insulation Ltd · Kilsarn Warmer Homes · Leitrim Warmer Homes CLG · Madden Developments Ltd · McCaher Construction Ltd. · McMorrow Renewables Limited · Meegan Insulations · Metro Insulation Ltd · MS Plastering Contractor · Multi Wrap Ltd · National Retrofit & Construction Services Ltd · Pa Home Renovations · Pro Walls Ltd · Rend Master Ltd · Rio Ents Ltd ta A-Rate · SBN Solid Home Ltd · Seamus O'Reilly · Solar Direct Ltd. · Solaregy T/A Sola · Solid Insulation Systems Ireland Ltd · Sovereign Finishes Limited · Superior Insulations Ltd · 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 Donegal compares
External wall insulation installers who say they work in each county, from SEAI's register. Published figure
76 external wall insulation installers say they work in Donegal; the median county has 132
Donegal is 26th of 26. The most list Dublin (175); the fewest, Donegal (76). 18 One Stop Shops list Donegal.
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 Donegal 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 Donegal?
- 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 Donegal 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