CAVITY WALL INFORMATION
Cavity wall insulation keeps your house warm in the winter and cool in the summer. Cavity wall insulation is insulating medium blown in between the gaps between your interior and exterior walls. It helps stop heat escaping through the cavity walls of your home. With cavity wall insulation you could save wasting as much as £160 every single year.
If your brick-work looks like the one on the left you have cavity wall and could be eligible for Free cavity wall insulation.