External Wall Insulation

What is External Wall Insulation?
External Wall Insulation (EWI) is a type of solid wall insulation whereby a layer of insulated material is fixed to your external wall and render (plastered) or cladded. The render can be adapted to feature a smooth, textured, pebbledash paneled or brick slip finish.
The benefits of EWI:
  • Reduces your energy bills
  • Protects the structure of your property
  • Improves weatherproofing and is sound resistant
  • Reduces draughts and condensation on internal walls
  • Reduces your carbon footprint 
Is EWI cost effective?
Although there is a cost to installing EWI, you can save up to £145-800 a year on your energy bills. However, with the launch of the Green Homes Grant, EWI is listed as a primary measure. If you are ‘able to pay’, you can receive two thirds of the cost, capped at £5,000.
Can you receive EWI for free?
With the launch of the Green Homes Grant, if you live in England and are on income support you can apply for 100% of a grant, capped at £10,000. Look at our Installer List for more information.
How can you apply for EWI?

When you decide to install External Wall Insulation into your property, ensure this is being completed by a trusted and regulated installer. Pick an Installer near you from The IAAs Installer List to ensure your property is covered by a 25 year guarantee Selecting an IAA Installer, you have the peace of mind knowing your installation is carried out by a regulated installer to the highest possible standard.