Internal wall insulation is more expensive than cavity wall insulation and could cost between 4 000 and more than 15 000 depending on the size of your property.
Cavity wall insulation foam cost.
Cavity wall insulation prices depend primarily on the area to be filled.
Cavity wall insulation is injected through the outer wall of your home into the space between the inner and outer leaves of brickwork that make up cavity walls.
Cost factors of cavity wall insulation.
What is cavity wall insulation.
The average cost of cavity wall insulation depends on only two factors.
Houses built before 1920 have solid walls that aren t suitable for cavity wall insulation.
The main factor is the area that needs filling.
So the more external walls you have the higher the cost will be.
According to statistics the investment in cavity insulation can pay off over 3 years or less.
The second factor is the cost of wall insulation.
Therefore by installing cavity insulation you can save between 200 and 300 per year on your heating bills.
House cavity insulation cost factors.
The cost of cavity wall insulation varies according to the type of property but you can expect to pay about 725 to insulate a detached house or about 475 for a semi detached property according to the energy saving trust.
There are a few factors that determine the wall insulation costs and type of insulation to install in your walls.
Houses built from about 1920 onwards will have cavity walls.
Cavity walls are one of the easiest ways for heat to escape from your home.