External wall insulation, also known as EWI and external solid wall insulation, is a type of insulation that is attached to the outside of your walls. Two layers of material are used – one to offer insulation, and an outer layer of mineral or synthetic render to protect against weather and provide a decorative finish.

By simply having quality insulation properly installed onto your walls, you can make savings of up to £435 per year on your heating bills!

We are able to offer both Mineral Wool and EPS insulation solutions and a range of coloured renders.

External wall insulation involves fixing a layer of insulation material to the wall, then covering it with a special type of render (plasterwork) or cladding.


  • It can be applied without disruption to the household does not reduce the floor area of your home
  • It will renew the appearance of outer walls.
  • It will improve weatherproofing and sound resistance.
  • It fills cracks and gaps in the brickwork, which will reduce draughts.
  • Increases the lifespan of your walls by protecting the brickwork.
  • Reduces condensation on internal walls and can help prevent damp.

Wall Insulation Grant Application

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Annual fuel savings for Mains Gas homes with External Wall Insulation 

Savings are provide by the Energy Savings Trust and are based on mains gas fuelled homes. If you home is heated by Electric, LPG or Oil, your costs savings will be greater.
If you qualify for External Wall Insulation, we can also check if you qualify for other insulation such as Loft and Underfloor at the same time to achieve even greater savings. You may also qualify for new heating or solar panels!

ECO Grant standard qualification criteria

ECO Grants are available to anyone that meets one of the following criteria, no matter where you live in the UK. Grants are subject to conditions related to your property type and residency and can also vary from time to time.

Once you know if you qualify for an ECO grant, through either the standard qualification criteria or via a Local Authority approval, you can check read more about the full list of available grants.

Local Authority grant approvals

In addition to the range of Benefit based criteria, we are also able to gain approval from various Local Authorities to approve an ECO grant. Each Local Authority has its own set list of qualification criteria, which includes an income based option. Please check the list below for full details of each Local Authority.