If your home was built after the 1920s, it probably has cavity walls and filling them with insulation is one of the best ways to make your property more energy efficient. It stops heat escaping straight through your walls so your heating system doesn’t need to work as hard saving you money on energy bills.

Normally installed using mineral wool or polyurethane foam, this is blown into your cavity wall from the outside of your house through small holes drilled in the brickwork. It is a quick process which only takes around two hours, and it doesn’t usually cause any mess. It will also be covered by a 25-year guarantee once complete.

It is possible to install this yourself (but it’s not recommended), but you will need to buy the insulation yourself and follow the manufacturer’s instructions carefully to ensure it’s done correctly. You will also need to check with your local building and fire codes before attempting the job yourself. It’s also a good idea to consult with your installer before starting, and they can give you guidance on the proper safety precautions for each type of insulation.

As it is a DIY option, this doesn’t tend to be as cost-effective as having it professionally installed. You can find a list of registered installers on the National Insulation Association website and it’s generally much easier to deal with an established company than trying to organise individual contractors yourself. Cavity wall insulation near me