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Cavity wall insulation

Get a cooler home without the price tag

Cavity wall insulation is great for keeping your home cooler this summer and could save you up to £1501 on your gas and electricity bills.

Call us on 0330 400 1083 to book your free cavity wall insulation assessment. Free offer ends on 30 June.2

How can you tell if you have cavity walls

Cavity walls weren't generally used in building until 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 after 1930 then it’s highly likely you have cavity walls.

Another useful trick is to look at the pattern of your house bricks. A regular pattern of bricks – where all the bricks are laid on the long side – usually means you have cavity walls.

But please don’t worry about checking your walls before getting in touch with us. We’ll assess your property thoroughly to see if you have cavity walls or cavity wall insulation when we come to see you.

Is cavity wall insulation messy to install?

No, cavity wall insulation is straight forward and mess free when done by a professional. We can install cavity wall insulation in no more than half a day. Our specialist heating engineers drill 2cm holes in to the outer wall, then inject your wall with cavity wall insulation. Once the cavity is full, the holes are nicely filled in to match the existing wall.

Our work is covered by an Cavity Insulation Guarantee Agency (CIGA), which is valid for over 25 years. We don't leave gaps.

Cavity wall insulation – without the price tag

We're offering free cavity wall for all homeowners and landlords with the option to add loft insulation free of charge. And all homes with cavity walls – big or small, regardless of age – whether you’re an existing customer or not can benefit. It’s part of our Affordable Warmth drive and the Government’s Energy Companies Obligation (ECO) Scheme to tackle fuel poverty and reduce carbon emissions.

No hidden catches. Just extra comfort at no extra cost.

Call us on 0330 400 10831 to book your free insulation installation.

More energy-saving solutions that could warm up your world

Boiler replacement

Keep your house working like a home and get a new installed A-rated Worcester Bosch boiler from just £35 a month with up to three years’ 0% interest free credit.3 We're a credit broker and not a lender.

See our boiler range

tado° smart thermostat

Upgrade your controls to a tado° smart thermostat when you replace your boiler –the smart scheduling app for your smartphone lets you control your heating from wherever you are, making sure energy isn’t wasted.

Our tado° smart thermostats

The important stuff

1 Savings information is provided from the Energy Saving Trust website and based on an average semi-detached household with an old boiler rating of G. Savings will vary depending on the size and thermal performance of your home. Figures are based on fuel prices as of April 2017.

2 Lines are open 8am to 8pm, Monday to Friday, and 10am to 6pm on Saturday. Calls from mobiles and landlines to 03 numbers are charged at your local rate, unless included in your call package when they’re free.

3 0% APR Representative over a period of up to three years, other finance options are available. Representative example based on 50% deposit: Boiler value of £2,500, 50% Deposit of £1,250, Total amount of credit of £1,250, Agreement duration of 36 months, Annual rate of interest of 0% PA (fixed), 0% APR Representative, Monthly payments of £34.72, Final payment of £34.80. Total amount payable equals £2,500. Credit is subject to application status. You must be a UK resident aged 18 or over to apply. E.ON Energy Installation Services Limited acts as a credit broker and not a lender meaning we can introduce you to our chosen finance lender, Barclays Partner Finance. Terms and conditions apply.