Insulating homes all over Leinster


SEAI Cavity Wall Insulation Grant

This quick guide gives you a step by step process on applying for SEAI grant for insulating your attic. 

Who Can Apply for the SEAI Grant?

All homeowners, including landlords, whose homes were built and occupied before 2011 can apply. This is defined as the date your electricity meter was installed. Grant funding can only be issued once per property for each type of works.

How much is the SEAI Grant?

You can apply for funding for home improvements from the SEAI for work completed by Powell Insulation LTD. For Cavity Wall Insulation you can get :
  • Apartment: €700
  • Mid-Terrace: €800
  • Semi Detached or End of Terrace: €1200
  • Detached: €1700

Before you Apply for an SEAI Grant

Please ensure you are familiar with the SEAI comprehensive Homeowner Application Guide to Applying For and Claiming Cash Grants. Also have a read over the Terms and Conditions.

Can I apply for the SEAI Grant Twice?

Grant funding can only be issued once per property for each type of works. 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

Will you Help with My Cavity Wall Insulation Grant Application?

Of course, our team in the Powell Insulation office will help with your application for SEAI funding. Simply click the button below to get your application started.

Benefits of Cavity Wall Insulation

Lower Energy Bills

Save up to 30% on heating bills this year!

Eco Friendly

Your home uses less fuel while staying the same temperature.

Cosy & Comfortable

Don't feel the chill this winter, cuddle up on the couch in warmth.

Energy Efficient

With less heat loss, your boiler doesn't work as hard to heat.

Higher BER Rating

Your home's BER rating will improve with better insulation

Moisture Control

Added insulation reduces dampness in your home.

Noise Reduction

Cavity Wall insulation adds a layer of sound proofing to your external walls.


With 1000's of happy customers, we guarantee a satifactory job for you.


Cavity Wall Insulation is a process that involves injecting insulating material into the gap between the inner and outer “skins” (walls) of a building to prevent heat loss.

Most modern houses, especially those built from the 1990s onwards, have cavity walls. They are characterized by two external brick walls with an air-gap between them.

The installation generally takes one day, depending on the size of the house.

Yes, the SEAI offer a grant of up to €1700 for Cavity Wall Insulation

Cavity Wall Insulation can significantly reduce the amount of heat your home loses, helping keep it warm and drastically cutting down your heating bills.


Improper installation of insulation can lead to skin, eye, and respiratory irritation. Some insulation materials also pose fire hazards if incorrectly installed. That’s why hiring professionals ensures that installation is done safely and effectively.

Signs of under-insulation include fluctuating indoor temperatures, high energy bills, and walls that are cold to the touch in winter. If your home has these symptoms, it’s a good idea to get an insulation check-up.

It’s installed by drilling small holes in the external wall of your house, through which insulating material is injected. The holes are then filled to maintain the exterior appearance.