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 up to £275
  • 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 £275 £160 £105 £110 £90
Installation cost £720 £475 £370 £430 £330
Payback time 5 Years or fewer
Carbon dioxide saving per year 1,100 kg 650 kg 430 kg 450 kg 360 kg