If your home’s got cavity walls, fitting cavity-wall insulation is one of the most cost-effective ways to improve your home’s energy efficiency and reduce your energy bills.
Most homes built in the past 100 years were built with two layers of wall, leaving a small space or ‘cavity’ between the two layers. The purpose of the cavity is to help prevent rainwater from penetrating through the outer wall to the inside of the property. However, unfilled cavities also let heat escape and could be responsible for 35% of all heat lost from your home. Which not only means your home’s not as cosy as it could be, but also means you’re spending more on energy to heat it up.