Skip to main content

The best home insulation grants in Ireland you need to know about

Homes without adequate insulation cost more to heat and keep warm. Preventing heat loss by improving the thermal efficiency of your home will allow you to reduce your energy costs and make your home warmer and more sustainable. The good news is that there are a number of home insulation grants available to you through the SEAI (Sustainable Energy Authority of Ireland) to help with the costs.
According to An Post Green Hub ambassador Patricia Power, ensuring you have sufficient insulation in your roof space, attic and walls can reduce heat loss by up to 30%.

First things first, what insulation grants are available to me?

Attic Insulation Grants
Attic insulation is often the most cost-effective upgrade you can make to your home. It is recommended that you check what insulation lies between the ceiling joists in your attic – it should be between 300mm and 400mm. In older homes, insulation is usually non-existent or is about 100mm in depth. Insulating the attic is like putting a hat on your house. Heat rises, so you will see an immediate benefit from upgrading your attic insulation.

Grant Name What is it? Type or Property Grant Value
Attic Insulation Grants The most cost-effective option as a starting point. Apartment (any)
Semi-detached or end of terrace
Detached house



Wall Insulation Grants
Insulating walls, either internal or external, is a great way of making your home more energy efficient and comfortable.  There are three types of wall insulation available:

  • External Wall Insulation (sometimes referred to as house wrapping insulation) is the best way to insulate your walls. External wall insulation can add 100-150 mm of rigid insulation to the exterior walls of your house, giving complete coverage and avoiding any cold bridges. When adding external insulation to your home, consider your windowsills, which will need to be made deeper and an adequate depth of fascias and soffits to take the thickness off the insulation. Downpipes will also need to be adjusted. This process also allows for a coloured render system, thinner than a more traditional sand cement render, but maintenance-free and available in a range of colours. 
  • Cavity Wall Insulation is an easy and cost-effective option to reduce heat loss in your home. If your home has cavity walls that are not insulated, or are only partially insulated, it's advised to have them completely insulated. The process involves injecting or pumping the outside walls or cavity with insulation product.
  • Internal insulation, also referred to as dry-lining, involves fixing insulation boards, ranging from 82mm to 112mm, to the inner surfaces of your external walls. The plasterboard is applied to the inner face of the external walls of the home. This means the existing skirting boards and sometimes floor finishes will need to be removed for application while electrical sockets, switches and radiators will also need to be adjusted and moved out in line with the new board. This process is more invasive than the other options and it can be difficult to continue living in a property at the same time. 

There are three types of wall insulation grants offered to homeowners:

Grant Name Type or Property Grant Value
Cavity Wall Insulation Grant Apartment (any)
Semi-detached or end of terrace
Detached house


Internal Insulation Grant (Dry Lining) Apartment (any)
Semi-detached or end of terrace
Detached house
External Wall Insulation Grant (The Wrap) Apartment (any)
Semi-detached or end of terrace
Detached house

You can find out what type of home energy grants are available here: SEAI Home Energy Grants

Did you know? You can save up to €600 per year on heating bills by insulating the attic and walls of your home properly.

How can I check if I am eligible for a home insulation grant?

All homeowners, including landlords, whose homes were built and occupied before 2011 can apply. This ‘built and occupied before’ date is defined as the date your electricity meter was installed.

Grants will only be issued once per property for each of the specific types of work implemented. Essentially, this means that any property which previously availed of wall insulation via the Better Energy Homes scheme, or any other government scheme, cannot receive additional support for further wall insulation works.
There are some key watch outs which may affect your grant application and should be considered before any upgrade works commence:

Building Regulations (Part L)
Part L of the Building Regulations outlines that after any alteration to a minimum of 25% of your home’s surface area, either:
  • your home achieves a minimum B2 BER rating – check out our ultimate guide to BER Ratings
  • your heating system and attic insulation comply with the Building Regulation standards
If you are applying for an SEAI grant for External or Internal Wall Insulation you are required to comply with these Building Regulations as a condition of your grant payment.
  • In the case of some properties, including protected structures, properties in architectural conservation areas or where the works result in an alteration to the front profile of the property, external insulation may require planning permission. Please check with your registered contractor or local planning authority.
Planning permission is not required for internal or cavity insulation.
The SEAI have compiled a helpful and comprehensive guide to insulating your home – this document should be reviewed in advance of proceeding with insulation works. 
How do I apply for home energy grants?
There are two options available to you in the grant application process
One-Stop Shop Service
This service is a complete home energy upgrade solution, the entire home energy upgrade project including grant management, building contractor, project management and financing, will by managed for you by the Green Hub from An Post, in partnership with SSE Airtricity. Find out more about the Green Hub from An Post’s home energy upgrade service
Individual Energy Upgrade Grants
If you choose to manage your home energy upgrade process yourself, there are SEAI grant options available to you but you must have grant approval in place before you begin any work. 
The SEAI has developed a comprehensive Homeowner Application Guide which outlines the application and grant claiming process.  
  • The Green Hub from An Post is a one-stop shop for your sustainable home energy upgrades.
  • Get recommendations, potential upgrade costs and energy savings using our BER energy calculator.
  • Book in for your free home survey, with partner SSE Airtricity, and review your upgrade options, price quotes and grant options to get you started on your journey to a more energy efficient and comfortable home.
  • With the An Post Money Green Home Improvement Loan, you can check your eligibility for Ireland’s lowest market rate Green Loan, to help fund the cost of your retrofit project outside of grant allowances.

Assess your home for free

Get recommendations, likely upgrade costs and energy savings for your home:

  • Use our BER energy calculator

  • Book a free home survey with SSE Airtricity


Things to know

Apply for a Green Loan

Finance your home upgrade with Ireland's lowest rate Green Home Improvement Loan. 

You've exceeded the maximum login attempts
Your account has been locked for 30 minutes to prevent fraudulent activity
Your session has timed out
Would you like to log in again to continue?
Marketing Preferences

We have updated our Marketing preferences to give a customised experience of when and how we can contact you.

Let's stay in touch

Get the latest offers and news from the An Post group of companies by:

We have updated our terms of service