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Cavity Wall Insulation Edinburgh

Cavity wall insulation emerged in Edinburgh during the 1970s, quickly becoming the preferred method of home insulation by the 1990s, when it became mandatory for all new construction projects in the country.

Since its introduction, cavity wall insulation has undergone significant advancements in materials and installation techniques. Modern systems utilise cavity wall beads or blown-in mineral wool insulation, creating a seamless barrier between external and internal walls that effectively prevents issues like dampness caused by gaps.

Studies have shown that cavity wall insulation can improve overall heat loss in homes by up to 33%, making it a crucial component of energy-efficient housing in Edinburgh, alongside loft insulation.

In this blog, we’ll explore the energy-saving benefits of cavity wall insulation and provide insights into government grants available to residents of Edinburgh in 2024.

Grants Available For Cavity Wall Insulation in Edinburgh?

Finding your way through the numerous grants available for cavity wall insulation and home insulation in general can be daunting, particularly when navigating online platforms.

In Edinburgh, the main channels for government funding for cavity wall insulation comprise Home Energy Scotland, the ECO 4 Scheme, and the Great British Insulation Scheme.

This blog seeks to clarify each grant by offering concise summaries of the funding amount, benefits of each scheme, eligibility criteria, and application process. Our objective is to streamline the vast array of information and choices, facilitating easier comprehension and decision making for all.

See lower down on this page more information on each government grant scheme including the criteria for who qualifies.

Does Cavity Wall Insulation Improve EPC Rating?

Cavity wall insulation is hailed as the foremost home insulation solution recommended by both Home Energy Scotland and The Energy Savings Trust for boosting your home’s EPC rating. When combined with loft insulation, cavity wall insulation offers unmatched heat retention benefits, directly impacting energy performance certificate ratings.

Why Install Cavity Wall Insulation ?

Cavity wall insulation has been shown to make a 4 to 20 point rating improvement on your homes EPC rating. You are likely thinking this is rather broad range, the impact differs depending on your homes suitability including the walls and floors, your central heating system and fuel type and what other measures you have taken alongside having cavity wall insulation installed. 

The up to 33 percent reduction in overall heat loss will result in lower heating bills, especially during the winter when usage increases. 


Cavity wall insulation and anything that makes for a well insulated home for that matter, will not only be warmer during the winter, but have cooler air and less fluctuation in temperature during the rest of the year.

Your decreased energy usage by having a better insulated home reduces your carbon footprint, contributing to environmental conservation and sustainability efforts.

Improved insulation and better heating can enhance indoor comfort by maintaining a more consistent temperature and reducing any drafts.

A higher EPC rating and well insulated home can increase the market value of your property, as energy efficient homes are in demand these days and may attract more premium prices.

There are various government grants available for cavity wall insulation as it the leading measure for home insulation in Scotland.

Cavity wall insulation improves your homes EPC rating

TrustMark Approved Insulation Installers

The cavity wall insulation installers we partner with have extensive expertise in Edinburgh, specialising in cavity wall insulation installation. They are fully accredited by TrustMark, an essential certification for installers qualified to carry out government-funded insulation projects. TrustMark accreditation is a prerequisite for all the diverse grants available for cavity wall insulation in Edinburgh in 2024.

Great British Insulation Scheme

The Great British Insulation Scheme has the highest chance of you being awarded a grant for cavity wall insulation, loft insulation and internal wall insulation.

This scheme has over £1 billion of funding available across the United Kingdom specifically for grants towards home insulation. If you are awarded a grant you will either have your home insulation installed 100% free or substantially reduced. Free loft insulation, free cavity wall insulation and free internal wall insulation are the most likely free options to be awarded and installed in Edinburgh. For part funded grants, it is similar but it is open to a few more types of insulation measures.

All of the insulation measures available include:

The criteria to qualify is incredibly open, meaning grants are available for most people in Scotland looking to insulate their homes! The criteria very (refreshingly) simply includes:

It’s easy to apply, simply complete our online form to begin your application and you will find out shortly if you qualify. 

Video explaining the Great British Insulation scheme and its benefits.

Cavity Wall Insulation Grants For People on Benefits

ECO 4 Scheme

The Energy Company Obligation (ECO) 4 scheme stands as the largest government grant initiative in the United Kingdom, both in terms of funding magnitude and product variety. With an allocation exceeding £4 billion, this scheme is meticulously crafted to combat fuel poverty by enhancing energy efficiency and heating systems in residences across the UK.

Since its inception in April 2022, the ECO 4 scheme has been operational, and its current funding of £4 billion is slated to last until March 2026, ensuring abundant resources for eligible applicants. Qualification for the standard version of the ECO 4 scheme necessitates receipt of some form of income-related benefits. This includes individuals with disabilities and pensioners who meet the eligibility of receiving pension credit guarantee or pension credit savings.

When an eco 4 grant is awarded for cavity wall insulation, loft insulation or external wall insulation for example, you will normally qualify for other products too meaning you can upgrade your central heating system or install some renewables.

Listed below are the main benefits that mean you will qualify for eco 4 funding.

There is however an option for people who work full time or part time on lower incomes below £31,000 per year known as the ECO 4 flex. This scheme is only available in certain local councils.

Video breaking down government grants available for home insulation, with the main focus being on the ECO 4 scheme.

Cavity Wall Insulation Grants for People on Low Income

ECO 4 Flex Grant

The ECO 4 Flex, also known as the Local Authority Flex, offers an alternative grant avenue within the ECO 4 scheme, targeting individuals with lower incomes. This program provides financial assistance to those earning below £31,000 annually and not receiving benefits. Eligibility mandates a home with an EPC rating below D, in addition to meeting specified criteria.

This particular grant is available for cavity wall insulation in most local council areas across Scotland. However, through Insulation Scotland, the LA Flex scheme exclusively operates within the Renfrewshire, South Lanarkshire, and North Lanarkshire local council areas. In these regions, our partnered installers are authorised to proceed with installations upon grant approval.

Home Energy Scotland Grant and Loan

Among the most prominent grants for home insulation in Scotland is the Home Energy Scotland Grant and Loan.

Home Energy Scotland provides complimentary guidance on available grants throughout Scotland, with the goal of reducing living expenses and improving your home’s EPC rating. They offer expert advice on products with the greatest potential to enhance these aspects and help identify funding opportunities for which you are likely eligible.

Most of their funding is aimed at central heating and renewables, including grants for solar panels, grants for air source heat pumps and grants for electric storage heaters.

In terms of home insulation and in particular cavity wall insulation, Home Energy Scotland has a grant called the Warmer Homes Scotland programme. This grant provides funding of up to £10,000 or more on all insulation and heating products, which specifically for home insulation provides a discount for up to £1,500.

The installers we collaborate with do not handle HES grants, and finding independent insulation installers in Scotland that do can be challenging.

To proceed, you’ll need to find TrustMark approved installers specialising in the specific type of home insulation you need. It’s worth noting that funds are typically disbursed to installers several months after installation, which may discourage smaller insulation providers from providing quotes.

Anyone can seek advice from Home Energy Scotland and apply for one of their schemes based on their product preferences. Unlike other schemes with mandatory criteria such as income-related benefits for the ECO 4 scheme or specific EPC ratings or council tax bands for the Great British Insulation scheme, there are no such restrictions with HES schemes.

Short video on the measures Home Energy Scotland have taken to improve EPC ratings in Scotland and reduce the cost of living expenses.

Other Cavity Wall Insulation Grants in Edinburgh

There are other less known and less available cavity wall insulation grants in Scotland. These include the Green Deal Loan and CARES funding which is specifically for community and voluntary organisations, local charities and faith groups.

However, you have the pay the Green Deal loan back and CARES funding is not relevant for individuals. 

Cavity Wall Insulation Grant F.A.Q

Not always no. You will only get your cavity wall insulation 100% free if you have various eligibility factors, such as a lower home EPC rating. This will also come down to wether you have qualified for and used funding via a grant in the past.

We can submit your grant application, we can have it approved in 48 to 72 hours and have your cavity wall insulation installed within 7 days in some cases. The quicker you begin the process, the quicker we can provide you with a timescale and get the ball rolling for installation.

To determine if your walls are cavity walls, you can use several methods. You can check your wall thickness, by measuring the thickness of the walls at a door or window. For brick walls, if the wall is more than 260mm (about 10 inches) thick, it is likely a cavity wall. Solid brick walls are typically about 225mm (9 inches) thick.

Your buildings construction date is another sign, buildings constructed after the 1920s in Scotland often have cavity walls. Cavity wall construction became widespread in the 1930s. Older buildings built before the 1920s are more likely to have solid walls.

We are happy to assist with this either on the phone or during a home survey, by carrying out a professional inspection.

Cavity wall insulation is not always going to be the best suited insulation for your home, both in terms of improving temperature and your EPC rating. We will consult on which type is best and can install other measures such as loft insulation.

Yes we are fully approved installers.  Including vital TrustMark accreditation to be able to complete government funded work.

We need to go through your grant application first, and then we can discuss costs with this deducted, everything will be explained step by step.

At the moment we only install cavity wall insulation in Central Scotland including Perth, Fife and Lower Scotland. If you are looking for other products such as central heating and renewables, we can travel further afield.

Insulation Scotland

Approved Cavity Wall Insulation Installers

Apply For A Cavity Wall Insulation Grant

Please complete our short contact form below to and to begin your application process.

Please allow up to 48 hours for a response from one of our representatives to discuss if you qualify for a grant.

Cavity Wall Insulation Grant Edinburgh

The first step to applying for a grant takes seconds and in most cases we can let you know instantly on the phone if you qualify.

Cavity Wall Insulation Grants Scotland

Our team of insulation contractors and surveyors travel all over Scotland providing management of cavity wall insulation grants and installation in Aberdeenshire, Angus, Argyll & Bute, Ayrshire, Clackmannanshire, Dumfries and Galloway, Dundee, East Ayrshire, East Dunbartonshire, East Lothian, Edinburgh, Glasgow, Falkirk, Fife, Highland, Inverclyde, Inverness, Midlothian, Moray, North Ayrshire, North Lanarkshire, Perth and Kinross, Renfrewshire, Stirling, South Ayrshire, South Lanarkshire, The Borders, West Dunbartonshire and West Lothian. 

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