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Who Can Get an Internal Wall Insulation Grant in 2024?

Did you know that internal wall insulation is one of the best ways you can warm up your home and cool down your energy costs? With the ever-rising energy costs in the UK, achieving warm homes and manageable bills is becoming increasingly difficult. A significant number of families are facing the harsh reality of fuel poverty. In these circumstances, internal wall insulation (IWI) emerges as a vital solution.

This article aims to examine how internal wall insulation can mitigate these escalating costs and enhance comfort in homes. Crucially, we will also discuss who is eligible for an internal wall insulation grant in 2024.

Internal wall insulation is more than just an upgrade; it's an essential strategy for many homeowners and renters in the UK to economically heat their homes. IWI works by adding an insulating layer inside your home, helping to retain heat and allowing you to lower the thermostat while still enjoying a cosy environment. The benefits are clear: lower heating costs and a more comfortable living area.

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 Internal Wall Insulation?

Internal wall insulation refers to the practice of applying insulating material to the inner walls of a building. This method is especially suited to properties that cannot accommodate external wall insulation, such as those with solid walls or specific architectural features.

Understanding the Structure

Unlike methods that insulate the exterior, internal wall insulation is applied directly to the inside surfaces of external walls. It is particularly beneficial for buildings constructed before the 1920s, which usually have solid walls rather than cavity walls.

The Purpose of Internal Wall Insulation

The main aim of IWI is to improve a building's thermal efficiency by reducing heat loss through the walls. This is especially important in solid-wall properties that typically lose more heat than those with cavity walls.

Types of Insulation Material

Materials such as mineral wool, expanded polystyrene (EPS), and phenolic foam are commonly used for internal wall insulation. These materials not only provide thermal insulation but also help to manage indoor air quality and moisture levels.

The Process

The installation of internal wall insulation usually involves fitting insulation boards to the internal face of external walls, followed by plastering and redecoration. This process can slightly reduce room sizes but significantly enhances energy efficiency.


Implementing internal wall insulation can lead to a substantial reduction in heat loss, which can greatly decrease heating bills. It also enhances the thermal comfort of a dwelling and, indirectly, its external appearance. In addition, it contributes to reducing carbon emissions and can address issues of dampness and mould internally.


Before choosing internal wall insulation, it's important to consider the reduction in internal space and the need for redecorating. Ensuring good ventilation and addressing any existing damp issues are also crucial. Internal wall insulation is an effective way to improve a home's thermal performance, offering a practical option for homeowners seeking to lower their energy costs and environmental footprint.

Why Consider Internal Wall Insulation?

Internal wall insulation is a smart choice for UK homeowners in light of soaring energy costs and environmental objectives.

Key benefits include:

- Energy Cost Savings: IWI can considerably decrease heat loss, leading to lower heating

bills. Homeowners may save significantly on energy expenses annually.

- Enhanced Home Comfort: Insulation helps maintain a stable indoor temperature, keeping the house warmer in winter and cooler in summer, thereby providing comfort throughout the year.

- Reduced Carbon Footprint: By using less energy for heating, you're also lowering your carbon emissions, contributing to environmental conservation and aligning with national climate goals.

- Prevention of Damp and Mould: IWI can aid in preventing internal dampness and mould, protecting both the building's structure and the health of its occupants.

- Increased Property Value: Homes with better energy efficiency are increasingly sought after. Internal wall insulation can improve your home's Energy Performance Certificate (EPC) rating, potentially increasing its resale value.

Eligibility for Grants

Many UK homeowners may be eligible for grants or funding schemes to help cover the costs of installing internal wall insulation, making it a financially accessible option. Let's explore the available funding options.

What Internal Wall Insulation Grants Are Available in 2024?

Households meeting certain criteria can access internal wall insulation grants through programs like the ECO4 scheme and the Great British Insulation Scheme, funded by major UK energy providers. These initiatives provide financial support for enhancing home energy efficiency.

Eligibility for Grants

Various factors, such as income, property type, and energy performance ratings, influence eligibility. For example, the ECO4 scheme often focuses on households receiving specific income-based benefits or living in homes with lower energy efficiency.

ECO4 Internal Wall Insulation Grant Requirements

To qualify under the ECO funding scheme, at least one resident in the property must be receiving one of the following benefits:

  • Universal Credit

  • Child Tax Credit

  • Working Tax Credit

  • Housing Benefit

  • Income Support

  • Pension Credit Savings Credit

  • Pension Credit Guarantee Credit

  • Income-based Jobseekers Allowance

  • Income-related Employment & Support Allowance

  • Child Benefits (depending on how much you earn)

Great British Insulation Scheme Criteria

For the GBIS, eligibility may depend on:

- Energy Performance Certificate (EPC) Rating: Homes generally need to have a lower EPC rating, often in the lower bands such as D, E, F, or G, indicating a need for improved energy efficiency.

- Council Tax Band: Eligibility is often linked to the property's Council Tax band, with a preference for homes in the lower bands, reflecting a lower property value.

- Location: Some local authorities might have specific eligibility criteria based on the geographic location of the property within their jurisdiction.

- Income Level: The scheme may set income thresholds or target lower-income households to ensure the assistance reaches those most in need of reducing their energy bills.

- Homeownership Status: Like other schemes, the GBIS often focuses on privately owned or privately rented homes, excluding social housing or council-owned properties, though these may be eligible under different governmental initiatives.

Ready to Enhance Your Home's Energy Efficiency?

Don't miss this opportunity to make your home more efficient and cost-effective. Check your eligibility for internal wall insulation grants today and take the first step towards a warmer, more sustainable home environment. Fill in the form below to get started.

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.

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Check Your Eligibility Using Our Grant Checker

Please ensure that all information provided below is 100% accurate. Any errors in your personal information could delay or prevent you qualifying for a government funded grant.

Please note that you do not necessarily need to be in receipt of tax credits or benefits as we still may be able to obtain funding for you via your Council or through other funding schemes.

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