Free loft and cavity wall insulation[1]

All about home insulation

Save up to £150[2] a year off your energy bills by stopping heat escaping through your roof.

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Save up to £145[2] a year off your energy bills. Fill the gaps in your walls to stop heat escaping.

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It's easy to have loft or cavity wall insulation installed. Read our simple step-by-step guide of the process.

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The benefits of insulation

  • You could save up to £150 on loft insulation and up to £145 on cavity wall per year.[2]
  • FREE insulation survey of your home if you are eligible.[1]
  • Quick, easy and hassle free to install.
Home insulation - what to expect

Home insulation - what to expect - 03.43

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[1] British Gas installs in mainland Great Britain only. Free installations are through the Energy Company Obligation and are subject to assessment, technical survey and eligibility criteria. The funding available is to cover insulation and if needed extra specialist equipment i.e. scaffolding and vents.  Some properties require more specialist equipment which cannot always be covered, if you need more, you have the option to pay the extra. Tenants must seek landlords permission.

[2] Savings figure source and, February 2014. Actual savings depend on individual circumstances.

[3] Phone lines are open 8am–8pm Monday to Friday and 8am–4pm on Saturday. Closed on Bank Holidays. Calls are free from a BT landline, however charges from mobile phones and other networks may vary. Calls may be monitored and/or recorded for quality assurance and compliance purposes.