This means that after you insulate the cavity in the wall you will end up spending less on home heating. With energy prices increasing with no end in sight, it makes sense to invest in insulation.

In the UK, cavity insulation can cost in the region of five hundred pounds for a standard size house. Home owners in the UK are able to take advantage of a grant (CERT) that allows saves them to save around 50% on the installation costs.

Using the figure of five hundred pounds, this means that the actual cost to the home owner is two hundred and fifty pounds. The estimated yearly heating bill savings from the cavity insulation is around one hundred and sixty pounds. This gives a payback period of 2 years!

Its estimated that if everyone in the UK installed cavity insulation then the resulting heating that was saved would be enough to power over 1,000,000 homes.