A Guide to Cavity Wall Insulation Types

If you’re looking for a way to keep your home warm throughout the winter, cavity wall insulation could be the answer. Not only will it help to reduce your energy bills, but it’ll also improve your home’s EPC rating, increasing its value and demonstrating you’re doing your bit for the environment.

However, not everyone is aware of the different types of Guide to Cavity Wall Insulation Types available, or even how to check if their property has cavities in its external walls. This article will explore the various cavity wall insulation materials on the market, how they’re installed and if your property is suitable for this form of retrofit insulation.

How Does Cavity Wall Insulation Work?

Cavity wall insulation is a simple process that involves pumping an insulation material into the space between your outer and inner walls. It’s important to note that this is not a DIY job and should only be carried out by professional installers, which you can find online or through trade bodies such as the British Board of Agreement.

Before cavity wall insulation can be installed, your home needs to be inspected to ensure that it is suitable. The walls should be free from damp and in good condition. A registered surveyor can perform a borescope inspection or you can ask the building control department of your local council for advice.

There are multiple types of cavity insulation that can be pumped into your walls, including mineral wool and expanded polystyrene beads. Mineral wool is the most commonly used insulation material for cavity walls because it’s affordable and easy to install. It’s also made from recycled materials, which helps to boost its green credentials. It is a lightweight insulating material and can be inserted easily into the cavity of your walls, where it’s then fused with a bonding agent.