Apply For a Grant!

Free Cavity Wall Insulation

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Apply for your free cavity wall insulation upgrade now

If your home was built after 1935 it is likely to have cavity walls and by insulating them you could reduce your heating bills by around 35% saving £150* a year (*Source: Energy savings Trust)

All homes across Britain are eligible for a cavity wall insulation grant, in most cases the works are completely free but call now and we can confirm what the grant is likely to be based on your home and personal circumstances.

Happy Energy can install bead or fibreglass insulation and all works come with a 25 year guarantee.

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

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.

Request a call back

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
Find out more
Why choose Happy Energy for your cavity wall insulation?