Solid Wall Insulation (IWI)
Internal wall insulation can dramatically reduce the amount of warmth that escapes from a property thereby reducing energy bills and creating a warmer home.
Properties built prior to 1930 will most likely have solid walls. These typically allow more heat to pass through than a standard cavity wall, but can still be insulated.
Solid walls can be insulated from the inside. Typically this will cost more than insulating a standard cavity wall, but the savings on your heating bills will be bigger too.
Typical installation costs for a solid wall insulation is around £7,400, However this can be done for free under ECO3
*Based on a typical semi-detached house in Great Britain
3 Simple Steps
Fully certified gas safe heating engineers perform all our boiler installations.
Frequently asked questions (FAQs)
Internal wall insulation is disruptive but can be done room by room. Light fittings, radiators and pipework on internal walls will need to be removed and reattached so that they are flush with your new ‘wall’.
Leaving you with a freshly plastered interior wall.
Solid walls were generally used in building before the early 1930s, so knowing the age of your home is the first useful step in figuring out if you have them. If your home was built before 1930, then it’s highly likely you have solid walls.
Another useful trick is to look at the pattern of your house bricks. A regular pattern of bricks – where all the bricks have square pattern mixed between the usual laid on the long side.
But please don’t worry, we’ll assess your property thoroughly to see if you have solid walls when we come to see you..
No, as it is installed on the inside of your property, if you do notice damp, you need to urgently weatherproof your external walls as they have failed.
Based on a 3-bed semi-detached house, typical installation costs* of solid (Internal) wall insulation is around £7,400.
ECO3 covers internal Wall Insulation so you could have it installed for free if you receive one of the qualifying benefits
No, If you privately rent and not social housing, you should qualify as long as you also in receipt of an ECO3 qualifying benefits
Yes, Especially through ECO3, You can save thousands on the installation alone, plus your reduced energy usage will save you a lot of the next decade.
Check your eligibility
Use our simple online form to find out if you qualify for government-backed ECO3 grants.