Cavity wall insulation

How To Get A Grant For Free Cavity Wall Insulation?

Follow the instructions below to check whether you qualify for free cavity wall insulation.

What is Cavity Wall Insulation?

A cavity wall is two layers of brick with a cavity between them. Cavity wall insulation or CWI is a process of inserting insulation into a small space between them. Depending on the type of cavity, different materials can be used for the insulation, such as foam, bead, or mineral wool. But you don’t have to worry about figuring out which one will suit your home. We will send a surveyor to determine whether your property is suitable for cavity insulation and which one will be most appropriate.

Most homes built with a cavity wall between 1924 and 1982 are likely not filled with any cavity wall insulation. With insulation grants, it is possible to get cavity insulation entirely for free at no cost to you!

Applications for free cavity wall insulations for May 2022 are now open.

Why Do Energy Companies Provide Cavity Wall Insulation Free of Charge?

This is due to the Energy Company Obligations scheme (ECO).

The Energy Saving Trust supports the ECO scheme as being beneficial to the environment. The free home insulation grant is provided by energy companies because of the government’s commitment to improving the UK’s carbon emissions. This scheme can also provide a boiler grant to cover a new a rated boiler, but this is not as beneficial as free insulation grants.

Energy suppliers can provide loft and cavity wall insulation worth up to thousands of pounds combined to follow these government obligations. They have to make UK houses more energy efficient and tackle fuel poverty, especially for low-income households and vulnerable people. By not reaching the targets set out by the government, energy suppliers may face hefty fines.

They should follow the government scheme and put money into making UK homes more efficient because the alternatives of getting fines would be far worse. But it’s great for us!

The main energy suppliers have an obligation to fulfill the ECO scheme to the best of their ability to help lower people’s energy bills, whether this be by replacing an inefficient boiler or providing funding for cavity wall and loft insulation. You can find out more about them here: British Gas cavity wall insulation, EON cavity wall insulation.

The free home insulation grants on offer fund the installation of cavity wall insulation as well as the labour required for it.

Free cavity insulation can save you a lot of money; check your eligibility now!

What is Free Cavity Wall Insulation Made From?

Free cavity wall insulation used by installers  is often made from shredded mineral wool, glass fibre or polystyrene beads, which both reduce the heat escaping from your home by up to 35%.

Did you know that you could save up to £145 each year on your energy bills with cavity wall insulation and reduce carbon emissions by up to 610kg? Even having partially filled cavity walls is more beneficial than not having them in the long run.

Energy providers are required to provide under the ECO scheme. It is best to take advantage of this while free insulation is on offer.

Check whether you are eligible for free cavity wall insulation or cavity wall insulation removal.

Benefits of cavity wall insulation installed through Energy Company Obligation (ECO scheme):

Fully funded

They can be fully paid from the government funding for cavity wall insulation grants and therefore save money.

Save money

An uninsulated home loses about a third of its heat through the walls. If you insulate cavity walls properly through an approved installer, you will save energy and cut your heating costs.

Warmer home

The free insulation grant will limit the lost heat generated by having empty cavity walls and allow you to retain heat for longer.

Home value increase

Not only your energy bills will go down but upgrades such as adding insulating material into your solid walls or having your loft insulation done will allow you to sell your property at a higher price. This is especially beneficial for private homeowners and landlords.

No maintenance

A good pre-installation assessment and good installation procedures can easily prevent the majority of cavity wall problems.

Reduce foundadtion weight

As a result of their thinner thickness, cavity walls reduce the weight on the foundation.

Is My House Suitable For Free Cavity Wall Insulation?

There is a chance that free cavity wall insulation won’t be suitable for your home, but here’s how you can tell if your home is suitable:

  • The external walls are unfilled cavity walls.
  • It has at least a 5cm wide cavity.
  • It was built before 1982 and in some cases 2005.
  • Your home is capable of energy efficiency in the long run.
  • Your property’s brickwork, outer wall or masonry is in good condition.
  • There is little risk of your house flooding.
  • The walls are not exposed to too much driving rain or extreme weather.
  • It is still possible to have it installed even if adjoining properties don’t.

Building regulations changed after 1982 where insulation was required to be fitted on any houses built from that point, but some of them weren’t. The properties built after 1982 that didn’t have cavity insulation fitted could be insulated for free with government grants if they were built before 2005.

Your home can also need cavity wall insulation removal. In some cases, it may be necessary to remove the cavity wall insulation. You could be suffering from internal damp problems or vermin infestations. Perhaps the insulation was installed incorrectly or is deteriorating. If the insulation was not suitable for your home, then the installation should have been avoided altogether.

If you are still unsure, we could help you! Simply answer some questions, and we will give you a call for some advice and a brief assessment.

Cavity Wall Insulation Free qualification
UK location

Can Location Impact Getting My Free Cavity Wall Insulation Grant?

Cavity wall insulation can significantly improve the energy efficiency of your home and reduce your heating energy bills. However, the location of your home does impact your ability to receive free wall insulation, whether it for your cavity walls or loft insulation.

This is mainly due to the severe exposure to wind-driven rain. This particularly affects the west side of the country, in England, Wales, and Scotland.

However, other forms of wall insulation are available, which can also aid in making your home energy-efficient, including internal solid wall insulation, internal wall insulation, or external wall insulation as well as free loft insulation.

UK Energy support can help you obtain grant and get free insulation for: loft and cavity wall; room in roof insulation grant, solid wall grant. In some cases, we can help as well with internal wall insulation grant, but it depends on specific circumstances.

Can I Get Cavity Wall Insulation for Free Even if I’m Not on Qualifying Benefits?

The free element of getting cavity wall insulation is because of the ECO4 scheme, as previously mentioned.

Unfortunately, housing association tenants do not qualify unless they own 50% of their rented home, though it could be beneficial to contact UKES anyway to see what we can do!

Suppose you are not entitled to a free cavity wall insulation grant (which you can check below). In that case, you can still arrange a free assessment and quote from UK Energy Support.

Even if you happen to have to pay for your cavity insulation, you should be able to make the entire cost back in five years or less with the money you can save on your yearly energy bills thanks to having a newly solid wall in your home.

The government benefits you receive that would likely make you eligible for free cavity insulation are:

  • Child Tax Credits (CTC)
  • Child Benefits
  • Housing Benefit NEW
  • Income based Jobseekers allowance (JSA)
  • Income related Employment & Support Allowance (ESA)
  • Income Support (IS)
  • Pension Credit Guarantee Credit
  • Pension Credit Savings Credit NEW
  • Universal Credit (UC)
  • Warm Home Discount Scheme Rebate
  • Working Tax Credit (WTC)

Would I Qualify For Free Cavity Wall Insulation?

Qualifying for free wall cavity insulation includes:


Owning a home or privately renting one (but you must get the landlord's permission first)


Have a high carbon-emitting home


Receive income-related benefits

ECO 4 is a government backed scheme

UK GOV website address

Why Should I Apply For Free Cavity Wall Insulation?

Perhaps you are already thinking about applying for free cavity wall insulation. But if you’re still not decided, here are some examples of other reasons why you should apply:


Quick turnover

There is minimal disruption to you, as the process only takes up to a few hours. Through a few drilled holes in your wall, your home can maintain all the heat generated for longer. The free home insulation grants on offer guarantee high quality work without cutting any corners on installing cavity wall insulation.



UK Energy Support guarantees high-quality services. We operate across the UK to provide energy support services and installation of cavity wall and free loft insulation, along with free electric storage heaters to anyone who qualifies under the ECO scheme (such as receiving a benefit like universal credit, child benefit or disability living allowance).


Reduce bills

Getting cavity wall insulation reduces your heating bills, giving you more money to spend on yourself and your family. If you are a private landlord, you will also benefit from this scheme due to the lack of required maintenance and the fast turn around on the initial cost.


Reduce carbon footprint

Your carbon footprint will be reduced, meaning you are playing a part in saving our planet. The Energy Saving Trust believes that one third of heat lost in houses can be avoided by installing cavity wall insulation. Insulation is often more beneficial than getting a new boiler which may not be as environmentally friendly.

About UK Energy Support

UK Energy Support is based in the North East of England and provides free heating solutions to anybody eligible under ECO.

This includes cavity wall insulation, free loft insulation installation and free electric storage heaters to help lower the cost of people’s energy bills.

Although we are based in Newcastle, we operate across the entirety of the UK without a single cost to you. We work with your energy supplier to make the process of cavity wall insulation installation as smooth as possible for you and your family.

We also offer a free insulation loft grant and free electrical storage heaters which can also help to improve your home’s energy efficiency and lower your heating bill. If you want to have loft insulation installed or want to check if you qualify for electric storage heaters, contact us.

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Don't wait! Apply Today

Here at UK Energy Support, we want to help as many people as possible improve their energy consumption. We would be happy to help you in any way we can, so get in touch and start saving on your energy bill with our free insulation grant now!