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Underfloor Insulation

When thinking of areas in your home that need insulation, under the floor is not usually the first on the list. However homes with crawl spaces under the downstairs floor can benefit from underfloor insulation.

If you live in an older property you may have suspended timber floors. If you experience cold air coming through the floorboards, underfloor insulation will help to keep the property warm in the winter by preventing heat loss, plus it will also help to keep it cool in the warmer months.


Underfloor insulation eliminates drafts that may enter via the gaps between the floorboards and ground, making you feel warmer.

It is important to NEVER block up air bricks in your wall. They are needed to help ventilate the space under your floor and to stop your floor board rotting.

Bill savings and things to be aware of:

  • Can save between £50-£130 a year on your fuel bills depending on property size (Figures from the Energy Saving Trust and assume property is a gas heated home and sized between a Mid-terrace house to a detached home).

  • Will need to lift the floor boards to fit the insulation.

  • Grant funding is available that can cover the full cost of installation (qualifying criteria apply).

To check if you are eligible under the ECO4 scheme, please click the button below and complete the online form. 

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