External Wall Insulation Grant & EWI Insulation Grants

It is possible to save up to £620 annually on energy bills and drastically lower household carbon emissions by installing a solid wall or external wall in your home. Depending on the design and layout of your house External Wall Insulation Grant can cost anywhere from £7,000 to £15,000. However, you may qualify for funds under the ECO (Energy Company Obligation) program.

Insulation grants can help make your home more energy efficient and reduce carbon emissions to contribute towards the government’s 2050 net-zero targets. External insulation could reduce the heat loss from your home by around 35%.In the ongoing battle against climate change, energy efficiency stands as a crucial pillar for reducing carbon emissions and mitigating environmental impact.

One significant aspect of enhancing energy efficiency in buildings is through insulation, particularly external walls (EWI). However, the cost of implementing EWI can be a barrier for many homeowners and businesses. To address this, governments and organizations worldwide have introduced grants and incentives to encourage the adoption of EWI. This article delves into the importance of the external wall, its benefits, and the various grants available to promote its widespread adoption.

Who Can Qualify For Solid External Wall Insulation Grant?

Free grants are available under the ECO 4 scheme for low-income households (annual income of £31,000 or less) or those receiving certain government subsidies. Through the program, grants for external walls may become available in 2024 to homeowners and certain private tenants.

The qualifying benefits include:

Income-related Income Support (IS) Employment & Support Allowance (ESA)

Guaranteed Credit for Pension Credit

Credit for Working Taxes (WTC)

Child Tax Credits (CTC) Housing Benefit (newly qualifying benefit under ECO4) Universal Credit (UC)

Savings Credit for Pension Credits (newly qualified benefit under ECO4)

If you own at least 50% of your house through a Housing Association, you may still be qualified for a grant. If you rent from a council or housing association, you should get in touch with them directly or the Energy Saving Trust, as they may be able to assist you.

Funding is also allocated under the Great British Insulation Scheme (GBIS) to low-energy households (EPC rating of D or less) and those with the lowest Council Tax categories (A-D in England, A-E in Scotland and Wales).

What Is External Wall Insulation Grant?

When a layer of insulating material is applied to solid exterior walls and covered in render or cladding, this is known as an external wall. You can select from a variety of finishes, including painted, textured, brick/stone effects, smooth, and tiled. The waterproof layer provided by the external wall will shield your brickwork, improve sound resistance, and help ward against moisture problems.

External Wall Insulation Grant

To reduce the floor area and to allow for the least interruption during installation, the insulation material is put to the exterior of the house. It will also help you save a lot of money on your heating expenses, improve the appearance of your walls, and raise the value of the home. In certain circumstances, the external wall may be a viable choice. However, it is typically required for solid wall buildings without any cavities to fill with insulation.

A layer of insulation known as an “external wall” is applied to the exterior of your home’s walls and covered with a particular kind of cladding or plaster. Cavity or solid walls are more common in homes constructed before the 1920s. When it comes to your home, these solid walls allow more heat to escape than cavity walls. Your house will be warmer in the winter and colder in the summer with external wall insulation, which will also help lower your energy costs by reducing the amount of heat that passes through your walls.

Solid And Hollow Walls

Two main types of walls have different functions: solid and hollow. Solid walls are made to offer structural support, insulation, and noise reduction. They are commonly built of brick, concrete, or stone. Buildings, houses, and other constructions are frequently constructed with them. Solid walls are renowned for their resilience to weather, stability, and longevity.

Conversely, hollow walls are made with a space or vacuum between the outside and interior layers of material. Insulation can be placed inside this cavity, which offers superior acoustic and thermal insulation over solid walls. Modern building frequently uses hollow walls because they provide a more economical and energy-efficient option. They are frequently constructed out of materials including metal studs, fiberglass, and gypsum board.

Hollow walls are more affordable, lightweight, and have superior insulating qualities than solid walls. Which are strong, long-lasting, and give structural support. Both kinds of walls have advantages and special uses, depending on the demands of a certain building project. Another useful indicator of solid walls is measuring the thickness next to doors or windows. This is because solid walls tend to be less than 10” thick, cavity walls, on the other hand, are generally more than 10”.

The cavity is designed to prevent dampness and can also be used for insulation purposes. In general, solid walls are less energy efficient than hollow walls due to the lack of an insulating cavity. However, they can be improved with the installation of external or internal wall insulation.


Buildings can be made more durable, comfortable, and energy-efficient by adding an External Wall Insulation Grant. However, many property owners may find the initial expenses prohibitive. Grants and incentives for external walls are essential in removing this obstacle. Since they offer financial assistance lower the cost and increase the accessibility of EWI. Governments and organizations may help reduce carbon emissions. Create built environments that are healthier and more sustainable for future generations by promoting the wider adoption of EWI.

Government-funded programs provide financial assistance to homeowners for insulating their homes’ external walls. The purpose of these grants is to reduce energy consumption, lower heating bills, and decrease carbon emissions. Both the UK and Ireland have such programs in place. The grants typically cover a portion of the cost of the insulation work. With the homeowner responsible for the remaining balance. These grants have successfully improved energy efficiency and reduced the environmental impact of homes.

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