Cavity wall insulation refers to the technique of insulating the gap between the internal and external walls of a building or structure, known as the cavity, to enhance thermal insulation and energy efficiency. In this method, an insulating material is injected into the cavity to create an additional layer of insulation within the walls.
The insulating material used in cavity wall insulation is commonly made of materials such as mineral wool, expanded polystyrene beads, or foam. These materials are lightweight, have good insulating properties, and are resistant to moisture, making them suitable for this application. The insulation material is injected into the cavity through small holes drilled into the external walls, which are then filled and sealed afterward to maintain the overall integrity and appearance of the walls.
Cavity wall insulation provides several benefits to the building and its occupants. Firstly, it significantly improves the thermal performance of the walls, reducing heat loss and improving energy efficiency. This, in turn, can lead to lower energy bills and a more comfortable living or working environment. It also helps to prevent condensation on the internal walls, by keeping them warmer and reducing the likelihood of moisture buildup.
However, cavity wall insulation may not be suitable for all buildings. It is typically more effective in properties with a cavity width of at least 50mm and is not recommended for buildings that are prone to dampness or have existing moisture-related issues. Therefore, it is important to assess the suitability of a building before considering cavity wall insulation installation.
