Energy Saving Grants | Government Grants for Energy Efficiency

Who Can Get an External Wall Insulation Grant in 2024?

External wall insulation is not just a home improvement; it’s a vital measure for many UK homeowners and tenants to keep their homes warm economically. EWI functions by enclosing your home in a thermal layer, enabling you to lower your thermostat while staying cosy. The result? Reduced heating bills and a more comfortable living space.

With energy costs in the UK continuously escalating, maintaining warm homes and affordable bills is increasingly challenging. Many families are confronting the stark reality of fuel poverty. This is where external wall insulation (EWI) becomes a crucial solution.

This article will delve into how external wall insulation can counteract those rising costs and enhance home comfort. More importantly, we’ll discuss who is eligible for an external wall insulation grant in 2024.

At Energy Saving Grants, we help homeowners, landlords, and tenants to access the latest energy efficiency grants available. You could be eligible for FREE heating upgrades, insulation, solar panels and more. Use our grant checker form below to see if you qualify and a member of our grants team will be in touch.

What is External Wall Insulation?

External wall insulation involves applying a layer of insulating material to the exterior of a building, followed by a protective render or cladding. Here’s an overview of its components and process:

Understanding the Structure

Unlike cavity walls, external wall insulation is applied to solid walls or walls where cavity wall insulation isn’t suitable. This method is particularly effective for older homes, typically built before the 1920s, which often have solid walls.

The Purpose of External Wall Insulation

The primary goal of EWI is to enhance the thermal efficiency of a building by minimising heat loss through walls. This process is crucial for solid-wall homes, which can lose even more heat than cavity walls if not insulated.

Types of Insulation Material

Various materials, including expanded polystyrene (EPS), mineral wool, and phenolic foam, can be used for external wall insulation. These materials not only insulate but also allow the building to breathe, preventing moisture buildup.

The Process

Installing external wall insulation involves affixing the insulation boards to the exterior of the house, followed by applying a weatherproof finish. This finish can be render or cladding, available in different textures and colours to enhance the aesthetic appeal of the building.


Applying external wall insulation can drastically reduce heat loss, potentially lowering heating bills significantly. It improves the thermal comfort of a home and can transform the external appearance. Additionally, it reduces carbon emissions and can help alleviate damp issues internally.


Before opting for external wall insulation, it’s essential to ensure that the property’s external walls are in good condition. The process also involves a certain amount of disruption, as the work is carried out on the building’s exterior. External wall insulation is an effective way to improve the thermal performance of a house, making it an attractive option for homeowners looking to decrease their energy costs and environmental impact. 

Why Consider External Wall Insulation? 

External wall insulation is an advantageous choice for UK homeowners, especially in the context of soaring energy costs and environmental targets. 

Key benefits include: 

Energy Cost Savings: EWI can significantly reduce heat loss, directly translating to lower heating bills. Homeowners could potentially save a substantial amount annually on energy expenses. 

Enhanced Home Comfort: Insulation maintains a consistent indoor temperature, making the house warmer in winter and cooler in summer, thus offering year-round comfort. 

Reduced Carbon Footprint: Using less energy for heating your home also means lower carbon emissions, aligning with environmental conservation efforts and national climate goals. 

Prevention of Damp and Mould: EWI can also help prevent internal dampness and mould, safeguarding both the structure and the health of residents. 

Increased Property Value: Energy-efficient homes are increasingly valued in the real estate market. EWI can boost your property’s Energy Performance Certificate (EPC) rating, potentially raising its market value. 

Eligibility for Grants: UK homeowners may qualify for grants or funding schemes to cover the costs of installing external wall insulation, making it a financially feasible option. In summary, external wall insulation offers a viable solution for UK homeowners to reduce energy bills, improve comfort, and contribute to environmental sustainability, while potentially enhancing property value. Now, let’s explore the available funding options. 

What External Wall Insulation Grants Are Available in 2024?

Households meeting specific criteria can access external wall insulation grants through initiatives like the ECO4 scheme and the Great British Insulation Scheme. These programs, funded by major UK energy providers, offer financial aid for home energy efficiency enhancements. 

Eligibility for these grants varies. Factors such as income, property type, and energy performance ratings play a role in determining eligibility. The ECO4 scheme, for example, often targets households receiving certain income-based benefits or living in less energy-efficient homes.

What You Need To Qualify For the ECO4 External Wall Insulation Grant 

For eligibility under the ECO funding scheme, at least one person living in the property must be receiving one of the following benefits or tax credits:

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