Man fitting insulation in his loft

Home insulation helps lower your energy usage

Man rolling insulation material

A big step towards low-carbon living

UK homes are behind many other developed countries in the energy efficiency ratings, and that’s mostly down to the lack of thermal insulation. Because most of our older homes weren’t insulated when they were built pre-1960, the heat can escape easily and we need a constant flow of energy to maintain a comfortable temperature. That means it costs more to keep our homes warm in winter.

Does your home have proper insulation?

If you’re worried about your energy bills or are considering switching to a cleaner energy source – such as an electric heat pump – it’s worth taking time to consider how well insulated your home is first. Poor, or lack of proper insulation, could mean you’ll lose all that lovely warm air through your walls, roof and floor – and you’ll have a higher energy bill to show for it.

Benefits of home insulation

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Protect against the elements

Insulation helps keep your home warmer in winter and cooler in summer.

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Cost savings with less waste

An insulated home needs less energy to heat and cool, saving you money.

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Helps other low-carbon solutions

Home insulation is a good foundation as it keeps warm air from escaping.

Insulating your home is the most effective improvement you can make

Having a home that’s well insulated and energy efficient isn’t just about keeping warm air inside. The right materials properly installed can also help reduce moisture and condensation buildup, and minimise temperature fluctuations within the home. And that means you have a more even temperature throughout and will need less energy to warm up cooler areas.

Insulated home

1. Loft

Loft insulation can not only help keep your home warmer in winter, it can also reduce damp air and condensation. You can insulate at roof level (warm loft) or floor level (cold loft).

2. Walls

Insulating cavity or solid walls, using different methods, could make a big difference on your energy saving.

3. Floors

Insulating under the floor can keep your home warmer and reduce drafts or heat loss, saving you money. Whether you have timber floorboards or solid concrete flooring, both can be insulated to improve your home’s energy efficiency.

Effective insulation is down to how heat flows and moves around your home and how it transfers its energy. Heat can also be absorbed, deflected or dissipated — and that’s how good insulation helps maximise efficiency. All insulation is deliberately designed to reduce the flow of thermal energy. Keeping warm air trapped when it’s cold, and allowing it to escape in the summer. This will help maintain the desired temperature for your home all year round, and is key to lowering your bills.

"Insulation is like wrapping your house in a blanket - it’s just a simple step to keep warm and it makes sense."

Jen, West Midlands

Did you know…

A quarter of heat is lost through the roof in an uninsulated home. Insulating your loft, attic or flat roof is an effective way to reduce heat loss and reduce your heating bills - Energy Saving Trust

The average detached house in Great Britain could save around £580 a year on their energy bills by having cavity wall insulation fitted - Energy Saving Trust

In Great Britain, 7.7 million (91%) homes with solid walls remain uninsulated - Household Energy Efficiency Statistics

Frequently asked questions