Cavity Wall Insulation stores the heat within the inner walls, bouncing it back into the room and holding it for longer. This gives you a more even temperature and gets rid of the draughts that come down from the walls.

  • The cavity is located between the inner and outer brickwork of the property (show picture)
  • The main materials used by NIA installers are Mineral Wool (Glass or Rock Wool) and EPS Bead (Polystyrene bead)
  • Cavity Wall Insulation can lower your heating bills, lower wear and tear on your boiler and reduce global warming and climate change
  • CIGA (Cavity Insulation Guarantee Agency) issue an independent 25 year guarantee covering defects in materials and workmanship.
  • The recommended cavity width is 50mm
  • Cavity Wall Insulation can give you an annual saving of around £115
  • There are a number of grants and schemes available to home owners which can substantially reduce the cost of installing these products.
Building Detached Semi detached Mid terrace Bungalow Flat
Annual saving £250 £145 £95 £100 £75
Installation cost £870 £415 £220 £270 £146
Payback time 3 Years or fewer
Carbon dioxide saving per year 1040kg 600kg 395kg 410kg 325kg