Free Cavity Wall Insulation

Cavity Wall Insulation is one of the quickest and easiest methods of saving energy in your home and, according to the Energy Savings Trust, could save you up to £140/year* on your energy bills.

It also helps regulate the temperature in your home so you’re warmer in winter and more comfortable in the summer months. Not all homes have cavity walls but this can be checked before you go ahead with any work. Certain homes, including timber or steel frame properties or homes which are exposed to high levels of wind driven rain and properties where the cavity contains rubble or may be prone to water ingress, are not suitable for cavity wall insulation.

There are GRANTS available for cavity wall insulation through the Government ECO (Energy Company Obligation) scheme. The scheme provides help for low income and vulnerable households to improve the energy efficiency of their properties and reduce heating bills. All homes in Great Britain are eligible for a cavity wall insulation grant and in most cases the works are free of charge.

To apply for a grant for your free cavity wall insulation please call us to find out more 0800 0 246 234.

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What is Cavity Wall Insulation?

Most homes built after 1935 will be constructed with a masonry cavity wall.  This is where there is a gap between your internal and external wall which can be filled by drilling a series of holes and pumping in either mineral wool or a polystyrene bead.  The work only takes around half a day to complete. Homes built after 1995 should already have adequate levels of insulation in the cavity.

Free Cavity Wall Insulation


Check suitability of your home.
Call Happy Energy on 0800 0 246 234.


Book a visit from one of our experts. Receive a quote from our team.


Book a date for the work to be completed. It won’t take more than a day.

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Why choose Happy Energy for your cavity wall insulation?

  • Fully accredited and trained installers
  • Free no obligation Happy Energy efficiency consultation
  • Works completed in less than one day
  • 25 year insurance backed warranty
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Why choose Happy Energy for your cavity wall insulation?