Cavity insulation is a common energy efficiency improvement, helping to save on heating bills. It is also environmentally friendly, reducing carbon emissions and providing savings for homeowners and the wider UK economy.
When fitted correctly by a qualified installer, cavity wall insulation (CWI) can help to significantly reduce heating costs. It works by filling the gap between the two layers of brick, which prevents heat loss. It is an easy and cost effective way to boost your home’s insulation, and you could make a significant saving on your energy bills.
It is important to choose a reputable installer for your CWI installation, so that you are protected by the CIGA guarantee and have peace of mind when making this investment. Look for installers who are members of a professional body such as the National Insulation Association or The Cavity Insulation Guarantee Agency.
The best type of CWI is mineral wool, which is made from recycled materials and can be tailored to suit the width of your cavity walls. This is a safe, durable, environmentally friendly and cost-effective option that offers a good lambda value of 0.034 W/mk, minimising heat loss and saving on heating bills.
Depending on the type of home you live in, CWI could also improve noise levels by stopping sound from travelling through walls. However, it is essential that the cavities are properly ventilated to avoid moisture build-up, which can lead to mould and mildew growth. This is why proper ventilation should be included as part of any CWI installation.