As a primary measure under the Green Homes Grant, insulation is clearly a priority for an energy efficient home. Energy Saving Trust addresses the key facts you need to know.


Research shows, as many as 40 per cent of us worry about how to heat our homes during the colder months without breaking the bank. While installing a heating system that reduces your energy bills is an attractive option, the key to reducing your reliance on heating altogether is to take a ‘fabric first’ approach. This means addressing the issues that allow heat to escape and cold air to enter your home. 

Energy Saving Trust explains how you can apply this to your own home through the Green Homes Grant 

mother and child sitting in window - green homes grant -

Image: Getty Images


Around one third of all the heat lost in an uninsulated home escapes through the walls. This can be addressed with the installation of solid wall insulation or cavity wall insulation. Solid wall insulation can be applied to either the exterior of your home or the interior – each with its own pros and cons. 

Cavity wall insulation is installed in homes with unfilled wall cavities by drilling into these cavities and filling with a spray foam insulation. 

Both solid wall insulation and cavity wall insulation, alongside loft, floor and roof insulation are all covered as primary measures under the Green Homes Grant.

A warm home is an energy efficient home - green homes grant - grand designs magazine

Image: Getty Images

Windows and doors 

You could save up to £85 a year by installing double glazing throughout your house. Homes with single glazed windows or doors are eligible for funding through the Green Homes Grant. These are covered as a secondary measure under the scheme, meaning that you’ll need to be installing a primary measure as part of the Green Homes Grant already to qualify. 

Energy Saving Trust is an independent organisation dedicated to promoting energy efficiency, low carbon transport and sustainable energy use and as part of the UK government’s £2 billion Green Homes Grant scheme, they can help you decide which type of heat saving measure is best for you.

Visit the Energy Saving Trust website for more information to find out if you’re eligible for the scheme. As a homeowner or landlord in England, you could get up to £5,000 to pay part of the cost of energy saving measures like insulation.

Green homes Grant Email Sign up

Want to learn more about the energy-saving measures available through the Green Homes Grant and get the latest news on the scheme as it happens? Sign up to the Grand Designs newsletter to receive all this and more, direct to your inbox.



Green Homes Grant: Insulation for walls and floors

Green Homes Grant: replacing single glazing under the scheme

Green Homes Grant: a guide to ground source heat pumps

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