Cavity Wall Insulation - Payback Within 3 Years

Installing cavity wall insulation is one of the most cost effective ways of retaining significant amounts of heat and reducing your heating bills as as result.

Cavity Wall Insulation

Many homes built after 1920 were constructed with a cavity between the outer and inner walls, these cavities significantly helped reduce damp and keep houses warmer than the single skinned walls that pre dated them, but there are still improvements to be had.

By filling the cavity with an insulating material such as polystyrene beads or mineral wool you can retain as much as 33% of the heat that would have previously been lost through the cavity, and it's all relatively simple to do.

A surveyor will measure your walls, deduct the area of the windows and doors resulting in the amount of insulating material that is required.

Holes will be drilled into the wall by the installation team who will then pump the material into the cavity, this all sounds quite a major job but in fact is quite straight forward and a such is a relatively low cost method of gaining significant savings.

How Will it Benefit Me?

Over and above the significant savings on your central heating bills you will also notice that your home will be cooler in summer, all due to the improved insulating properties of the walls, it will also help reduce condensation on the walls and ceilings and provide a more stable and even temperature throughout the home.

Is My House Suitable?

There are two steps to see whether your house has cavity wall.  The year that your property was built will give you a good indication:

  • Before 1932 your house is unlikely to have cavity walls
  • Between 1932 and 1982 your house is likely to have cavity walls
  • Houses built after 1982 are likely to have cavity walls as standard
Typical Brick Wall Suitable For Cavity Wall Insulation

Then, if the configuration of the bricks in your house looks like the ‘Typical cavity wall’ diagram then your house will more than likely have cavity walls.

How Much?

A typical house will cost around £250 to insulate which will reduce your heating bills by as much as £90 per year, this equates to a payback of only 3 years, in other words, after 3 years you'll have an extra £90 in your pocket, every year! You'll also be helping the environment with a reduction in your CO2 emission of as much as 750kg per year

Are There Grants or Subsisdies Available for Cavity Wall Insulation?

Subsidies are available for both loft insulation and cavity wall insulation from Warm Front in England.