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 Dublin?

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 Dublin 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 Dublin

178 companies on the SEAI register are based in or serve Dublin for external wall insulation (register as of 8 September 2026).

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

Based in Dublin

61 of them. Sorted by what they are registered for, then by name — this is not an order of merit.

Bord Gais Energy LtdOne Stop Shop
Attic insulationCavity wall insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationSolar hot waterSolar panelWindow and door
Nationwide · SEAI no. 14183 · Website
Based in Dublin.
House 2 Home Retrofit LtdOne Stop Shop
Attic insulationCavity wall insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationSolar hot waterWindow and door
Nationwide · SEAI no. 15918 · Website
Based in Dublin.
Lough ProjectsOne Stop Shop
Attic insulationCavity wall insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationSolar hot waterWindow and door
Based in Dublin · serves Dublin and Leinster · SEAI no. 17674 · Website
Based in Dublin.
Moston Construction LtdOne Stop Shop
Attic insulationCavity wall insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationSolar hot waterWindow and door
Nationwide · SEAI no. 16068 · Website
Based in Dublin.
Above All Building Construction Ltd
Attic insulationExternal wall insulation
Based in Dublin · SEAI no. 18190
Based in Dublin.
Absolute Acrylics Ltd
Attic insulationExternal wall insulationInternal wall insulation
Based in Dublin · serves Dublin, Leinster, Munster and Connacht · SEAI no. 10542
Based in Dublin.
Ailesbury Warm Homes Ltd T/A Warmhomes.ie
Attic insulationExternal wall insulation
Based in Dublin · serves Dublin and Leinster · SEAI no. 17749
Based in Dublin.
Alpine Sunrooms Ltd
Attic insulationExternal wall insulationHeating controlsInternal wall insulation
Based in Dublin · serves Dublin and Leinster · SEAI no. 14112
Based in Dublin.
ANEIS Ltd T/A AN External Insulation Specialist
Attic insulationExternal wall insulationInternal wall insulation
Based in Dublin · serves Dublin and Leinster · SEAI no. 15718
Based in Dublin.
Ap Eco Building & Renovation
External wall insulationInternal wall insulation
Nationwide · SEAI no. 20076
Based in Dublin.
AVM Construction Ltd
Attic insulationExternal wall insulationInternal wall insulation
Based in Dublin · serves Dublin and Leinster · SEAI no. 18142
Based in Dublin.
Bluebuild Renewables Ltd
Attic insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationWindow and door
Based in Dublin · serves Dublin, Leinster and Ulster · SEAI no. 17110
Based in Dublin.
Caracon Limited
Attic insulationExternal wall insulationInternal wall insulation
Based in Dublin · SEAI no. 17711
Based in Dublin.
Castlestone Construction BV Ltd
Attic insulationExternal wall insulationInternal wall insulationWindow and door
Based in Dublin · serves Dublin and Leinster · SEAI no. 17513
Based in Dublin.
CGR Titan Builders
External wall insulation
Based in Dublin · SEAI no. 18019
Based in Dublin.
Ciocan Construction Ltd
Attic insulationExternal wall insulationHeating controlsInternal wall insulationSolar hot water
Nationwide · SEAI no. 16609
Based in Dublin.
CKF Interiors & Insulation
Attic insulationExternal wall insulationInternal wall insulationWindow and door
Based in Dublin · serves Dublin and Leinster · SEAI no. 13815
Based in Dublin.
Claxton Plastering And Insulation Ltd
Attic insulationExternal wall insulationInternal wall insulation
Based in Dublin · serves Dublin and Leinster · SEAI no. 17902
Based in Dublin.
Complete Insulations and Energy Upgrades Ltd
Attic insulationCavity wall insulationExternal wall insulationHeating controlsInternal wall insulation
Based in Dublin · serves Dublin and Leinster · SEAI no. 12529
Based in Dublin.
Cv Plastering Limited
External wall insulation
Based in Dublin · SEAI no. 20148
Based in Dublin.
Delta Build Development
Attic insulationExternal wall insulationInternal wall insulation
Based in Dublin · serves Dublin and Leinster · SEAI no. 20170
Based in Dublin.
Derek Griffin LTD T/A A-rated building services
Attic insulationExternal wall insulationInternal wall insulationWindow and door
Based in Dublin · SEAI no. 15196
Based in Dublin.
Dublin All Trades Building Services
Attic insulationExternal wall insulationInternal wall insulation
Based in Dublin · serves Dublin, Leinster, Munster and Connacht · SEAI no. 14090
Based in Dublin.
Eco Lux Construction Ltd
External wall insulation
Based in Dublin · SEAI no. 20080
Based in Dublin.
Eco Pro Insulation
Attic insulationExternal wall insulationInternal wall insulation
Nationwide · SEAI no. 19384
Based in Dublin.
Eco Shield External Insulation Ltd
External wall insulation
Based in Dublin · serves Dublin and Leinster · SEAI no. 19432
Based in Dublin.
Eco Thermal Homes
Attic insulationExternal wall insulationInternal wall insulation
Nationwide · SEAI no. 15726
Based in Dublin.
Edwardyna Construction Ltd
Attic insulationExternal wall insulationHeat pumpInternal wall insulationWindow and door
Based in Dublin · serves Dublin and Leinster · SEAI no. 17285
Based in Dublin.
Equinox Construction Ltd
Attic insulationExternal wall insulationInternal wall insulation
Based in Dublin · serves Dublin and Leinster · SEAI no. 17729
Based in Dublin.
Expert Residential PropertyLtd T/A Expert Property
Attic insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationWindow and door
Based in Dublin · serves Dublin and Leinster · SEAI no. 17866
Based in Dublin.
Fior Insulation & Fire Protection
Attic insulationExternal wall insulationInternal wall insulationWindow and door
Based in Dublin · SEAI no. 17564
Based in Dublin.
G & D Construction Projects Ltd
Attic insulationExternal wall insulationInternal wall insulation
Based in Dublin · serves Dublin and Leinster · SEAI no. 17487
Based in Dublin.
G Force Modul Limited
External wall insulation
Based in Dublin · SEAI no. 18215
Based in Dublin.
G.V.Services Limited
Attic insulationExternal wall insulationInternal wall insulation
Based in Dublin · serves Dublin, Leinster, Munster and Connacht · SEAI no. 19364
Based in Dublin.
Green Home Technology Ltd
External wall insulation
Based in Dublin · serves Dublin and Leinster · SEAI no. 15936
Based in Dublin.
Hamkel Holdings Ltd / Soltherm
Attic insulationExternal wall insulationInternal wall insulation
Nationwide · SEAI no. 16587
Based in Dublin.
Hoar Rock Construction Ltd
Attic insulationExternal wall insulationInternal wall insulation
Based in Dublin · serves Dublin and Leinster · SEAI no. 19967
Based in Dublin.
House Proud Unique (HPU)
Attic insulationExternal wall insulationInternal wall insulation
Based in Dublin · serves Dublin and Leinster · SEAI no. 17735
Based in Dublin.
Inglotherm Ltd
Attic insulationExternal wall insulationInternal wall insulation
Based in Dublin · serves Dublin and Munster · SEAI no. 17081
Based in Dublin.
Inline Construction and Custom Carpentry Ltd
Attic insulationExternal wall insulationInternal wall insulation
Based in Dublin · serves Dublin and Connacht · SEAI no. 17395
Based in Dublin.
Kokoon Insulation Ltd
Attic insulationExternal wall insulationInternal wall insulationWindow and door
Based in Dublin · serves Dublin and Leinster · SEAI no. 15835
Based in Dublin.
Morrin Building Services Ltd
Attic insulationExternal wall insulationInternal wall insulation
Based in Dublin · SEAI no. 10560
Based in Dublin.
Narod Insulation Contractors Ltd
Attic insulationExternal wall insulationInternal wall insulationWindow and door
Based in Dublin · serves Dublin and Leinster · SEAI no. 17977
Based in Dublin.
National Retrofit & Construction Services Ltd
Attic insulationCavity wall insulationExternal wall insulation
Nationwide · SEAI no. 16122
Based in Dublin.
Nicolae Rus
External wall insulationInternal wall insulation
Based in Dublin · SEAI no. 19785
Based in Dublin.
North Dublin Heating
External wall insulationHeating controls
Based in Dublin · serves Dublin and Leinster · SEAI no. 16169
Based in Dublin.
Notrom Ltd
External wall insulationInternal wall insulation
Based in Dublin · serves Dublin and Leinster · SEAI no. 10053
Based in Dublin.
Nuhaus Ltd
Attic insulationExternal wall insulationInternal wall insulation
Based in Dublin · SEAI no. 12841
Based in Dublin.
Old Court Construction
Attic insulationExternal wall insulationInternal wall insulationWindow and door
Based in Dublin · serves Dublin and Leinster · SEAI no. 13623
Based in Dublin.
Piaras Enterprises Ltd T/A Green Energy Homes
Attic insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationSolar hot waterWindow and door
Based in Dublin · SEAI no. 13594
Based in Dublin.
Pro Walls Ltd
Attic insulationExternal wall insulationInternal wall insulation
Based in Dublin · serves Dublin, Leinster, Munster and Ulster · SEAI no. 18337
Based in Dublin.
R & U Company Ltd.
Attic insulationExternal wall insulationInternal wall insulation
Based in Dublin · serves Dublin and Leinster · SEAI no. 12744
Based in Dublin.
SBN Solid Home Ltd
Attic insulationExternal wall insulationInternal wall insulation
Nationwide · SEAI no. 18204
Based in Dublin.
Sean Paul Construction Ltd
Attic insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationWindow and door
Based in Dublin · serves Dublin and Connacht · SEAI no. 18236
Based in Dublin.
Sema Construction Limited
External wall insulationHeating controlsInternal wall insulation
Based in Dublin · serves Dublin and Leinster · SEAI no. 16130
Based in Dublin.
Sovereign Finishes Limited
Attic insulationExternal wall insulationInternal wall insulation
Nationwide · SEAI no. 18194
Based in Dublin.
STS Building Services
Attic insulationExternal wall insulationInternal wall insulation
Based in Dublin · SEAI no. 17217
Based in Dublin.
Sunrise V & B Limited T/A Sunrise Improvements
External wall insulation
Based in Dublin · SEAI no. 17526
Based in Dublin.
Tus Nua Building Services Ltd
Attic insulationExternal wall insulationInternal wall insulation
Based in Dublin · serves Dublin and Leinster · SEAI no. 17815
Based in Dublin.
Vos Premium Services Ltd
Attic insulationExternal wall insulationInternal wall insulation
Based in Dublin · serves Dublin and Leinster · SEAI no. 18197
Based in Dublin.
Warm Walls Insulation Ltd
External wall insulationInternal wall insulation
Based in Dublin · serves Dublin and Leinster · SEAI no. 10394
Based in Dublin.

Also cover Dublin from elsewhere (117)

These told SEAI they cover the province Dublin 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.

Activ8 Energies (OSS) · Ashgrove Engineering Ltd T/A Ashgrove Renewables (OSS) · Aspen Eco Power (OSS) · Bayview Contracts Ltd (OSS) · Breffni Insulation Ltd (OSS) · Churchfield Home Services (OSS) · Cooper Insulation Ltd. (OSS) · Electric Ireland Superhomes (OSS) · Energlaze Home Energy Upgrades (OSS) · Energyfix (OSS) · Envirobead Ltd. (OSS) · Greenwatt Ltd (OSS) · Home Comfort Retrofits Ltd (OSS) · Integrate Home Energy Upgrades Limited (OSS) · Kilgobbin Castle Holdings Ltd t/a Insulex (OSS) · Kingdom Installation Ltd (OSS) · Kingspan Insulation Ltd (OSS) · Kore Retrofit Ltd (OSS) · Larkrock (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) · WiEnergy (OSS) · A & D External Wrap Ltd · Algricris Construction Ltd · All Weather External Insulation Ltd · All Weather Insulation · Anthony Coughlan Heating & Plumbing TA C&S Construction Services · AR Plastering Ltd · Ashmark Civil And Utilities · Ballinderry Developments Ltd T/A Rebuild · Bernard McKeown Plastering · Better Me Ltd Ta North Shield Insulation · Blacksea Construction And Supply Limited · Brayton Homes · CJH Construction · CK Energy Management Solutions (EMS) Ltd t/a ENCON · Cool To Be Warm Insulation T/A Kevin Hoey Carpentr · CW Xterior Solutions Ltd · Damien Ryan Contracts Ltd · David Flaherty Construction LTD · DC Energy Solutions · Decarb Contracts Ltd · Declan O Brien Construction Limited · Derchil Limited t/a CosiHomes · DMT Renewables Ltd · Ds Fallon · Duey Brothers Ltd · Eco Smart External Insulation Ltd · Eco Warmer Homes · Ecoinsulationplus.Ie · Ecowrap · Eirgreen · Elitetherm · Energy Retrofit Ireland · Energysmart Construction Ltd · External Insulation Plastering Ltd · Fabian Anton · Finlay EcoFit Tullamore Ltd · Floelen Construction Ltd · Grainger Energy Solutions Ltd · Green - Lux Construction Ltd · Green Air Technologies Ltd · Greentech Insulations Waterford ltd Greentech Facades · Harrington Insulations Limited · HDC Construction · Heco Construction Ltd · Home Building Solutions T/A HBS Elegant build Ltd · Homeology Ltd · Hometherm Insulation Ltd · Hughes and Co External Insulation · Insulate your home Ltd · Jacob Insulation Limited · James Doran & Son Ltd · James Whelan Plastering Ltd · JJR Insulation Ltd · Johnathan Timoney T/A Rendpro Ltd · Kilmallock Developments Ltd · Kilsarn Warmer Homes · Leetherm Insulation Ltd. · Leitrim Warmer Homes CLG · Leonard Price Developments Ltd · Luca Line Limited TA Luca Line Services · Madden Developments Ltd · Mc Menamin Building Contractors Ltd · McCaher Construction Ltd. · McMorrow Renewables Limited · Meegan Insulations · Metro Insulation Ltd · Michael O Reilly Plastering & Wall Insulation · MJS Eco Limited · Modern Insulation Systems Ltd · Moran Retrofit Solutions · MS Plastering Contractor · Multi Wrap Ltd · Novin Consultants Ltd · O'Toole Plastering · Pa Home Renovations · Peter Brereton Plastering · Platinum Insulation · Professional Solid Insulation · Rend Master Ltd · Ryan And Kennedy · Seamus O'Reilly · Sloane Plastering LTD · Solaregy T/A Sola · Solid Insulation Systems Ireland Ltd · Spreadwell Construction Ltd · Superior Insulations Ltd · Tekton Contruction Ltd · Thermotech Retrofit Ltd · Tirconaill Contracts Ltd T/A Mc Taggart Insulation · TLI Group Ltd T/A Transmission Links Ireland Ltd · Tomasz Rulak T/A Tombet Building · William Maguire T/A Therma - Rend

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 Dublin 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.

How the application works

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 Dublin

Common 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 Dublin?: 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 Dublin 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 Dublin

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.