Cavity wall insulation is available from as little as £150 and could save you up to £310* on your energy bills.
What is cavity wall insulation?
Is my home eligible?
What are the benefits?
How much does it cost?
How can I apply?
The installation process
What is cavity wall insulation?
Cavity Wall insulation involves filling a brick cavity with an insulating material. This reduces the amount of heat which can escape through the walls and will help to ensure your home is warmer throughout.
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Is my property eligible?
You can check that your home has cavity walls:
- By checking the brick pattern.
A typical solid brick wall will use a combination of brick ends and lengths. A typical cavity wall will just use brick lengths.
- By measuring the thickness of your home’s external walls.
Cavity walls are at least 30cm thick. It’s easiest to check the thickness of the wall by using a ruler at a doorway or window.
Once you've applied for Cavity Wall Insulation a surveyer# will visit your home to confirm that it is suitable for insulation. Once the surveyor has approved your home, a CIGA (Cavity Installation Guarantee Agency) registered company# will carry out the installation of your cavity wall insulation.
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What are the benefits of cavity wall insulation?
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How much does it cost me?
Cavity wall insulation is now available from as little as £150. Call us today on 0845 301 4927 for a free, no obligation quote.
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How do I apply?
You can register online for a survey or call 0845 301 4927, Mon-Fri, 8.00am-8pm, Saturdays 8am-4pm. For more energy efficiency advice contact our friendly energy efficiency team on 0500 201 000, Monday to Friday between 8am and 6pm.
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The Installation Process
The work usually takes 2-3 hours, depending on the size of your home.
1. One of our approved surveyors will asses your home to ensure it is suitable for the installation and if it is we will assign a CIGA (Cavity Installation Guarantee Agency) registered company to carry out the installation of your cavity wall insulation.
2. The installer will make sure that your homes' ventilation isn't affected by the insulation and if needed, will carry out any neccessary work to ensure you remain safe.
3. The installer will then drill small holes (about the size of a 10p piece) on the outside walls of your home and inject the insulating material through these holes until the cavity is completely full.
4. The holes are then filled and, if neccessary, repainted to match the existing wall as closely as possible. Please note, E.ON does not take responsibilty for an exact match of colours.
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* Installing these measures will reduce your heating bills and we calculate that this could be as much as £310 a year for a 1940’s 3 bed semi detached home with a ten year old gas boiler and a gas price of 3.73p/kWh. More modern homes save less. Your individual savings depend on a large number of factors and the £310 quoted should be treated as a guide. Also experience tells us that many customers like to have a warmer home, making it more comfortable. This reduces the saving. But even allowing for this, insulation is a worth-while investment.
** Source: Energy Savings Trust
# This is not a company of E.ON.
