Improving energy efficiency at home is a key priority for many UK homeowners. One of the most effective ways to reduce heat loss is through cavity wall insulation. In this article, we explain what cavity wall insulation is, how it works, its benefits, and how you can determine if your property is eligible for installation through a government-backed grant.
Most homes built in the UK after the 1920s were constructed with cavity walls. A cavity wall consists of two layers (also known as leaves) of brick or block with a gap in between, known as the cavity. Originally, this gap was designed to prevent moisture from penetrating through to the inside walls. However, it also allows a significant amount of heat to escape.
Cavity wall insulation fills this gap with insulating material. It prevents heat from passing through as easily and helps to maintain a more comfortable indoor temperature. As a result, it leads to significant energy savings.
For example, a properly insulated cavity wall can reduce heating costs by hundreds of pounds per year. Therefore, it is one of the most cost-effective energy efficiency improvements available to UK households today.
Installers inject insulating material, usually made of mineral wool, polystyrene beads, or polyurethane foam, into the cavity space. This is done through small holes drilled into the external wall. Once the cavity is filled, they seal the holes, leaving the appearance of your home unchanged.
This insulation acts as a thermal barrier. It slows down the movement of heat through the walls. It also keeps your home warmer in winter and cooler in summer. Consequently, you will reduce your need to rely on central heating or cooling systems.
Additionally, cavity wall insulation contributes to soundproofing, which can improve comfort in noisy environments. While not its primary function, this added benefit is worth considering for homes in busy areas.
There are several advantages to installing cavity wall insulation in your home:
Not every home is suitable for cavity wall insulation. The property must meet specific criteria:
If your home meets these conditions, you may be a good candidate. To be certain, you can arrange a Cavity Wall Insulation Survey through Green Homes Group. Our team will assess your property to ensure it is suitable and explain the next steps in detail.
Alternatively, if you are unsure about your home’s wall type, our survey will identify this for you. Knowing whether your home has cavity or solid walls is crucial in deciding the best insulation method.
Once eligibility has been confirmed, the process is quick and non-intrusive. A trained team follows a simple step-by-step method:
Most installations are completed in less than a day. You won’t need to vacate the property during the process.
Furthermore, we take steps to ensure your home remains tidy throughout the process. Our installers always aim to minimise disruption.
Many UK households qualify for cavity wall insulation through the Energy Company Obligation (ECO) scheme. This initiative is aimed at improving energy efficiency in low-income and vulnerable households.
Through the First Time Central Heating Grant and Air Source Heat Pump Grant, homeowners can also access complementary support for heating upgrades.
If you are unsure whether you qualify, our team can guide you through the application process. We aim to make the experience as simple and stress-free as possible.
To see if you qualify, visit our Grant Eligibility page or contact our team for a quick consultation.
At Green Homes Group, we have years of experience helping homeowners access grant-funded energy improvements. From initial surveys to installation and aftercare, our team manages the entire process with professionalism and care.
In addition to cavity wall insulation, we also offer a range of services to further improve your home’s efficiency. These include:
Choosing Green Homes Group means choosing a reliable, professional team that puts your comfort and energy savings first.
Cavity wall insulation is a smart investment that can save you money, increase comfort, and reduce your carbon footprint. If you’re unsure whether your home is eligible, book a free survey today. Green Homes Group is here to help you every step of the way.
To learn more, visit our About Us or Contact Us pages.
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