Loft insulation

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Loft Insulation

Install loft insulation and save up money on your energy bills

Up to a 1/4 of all heat loss from a UK home can be through the roof of an uninsulated home. Having the correct depth of loft insulation installed is a simple, cost effective and easy way to keep your home warm. Insulation on the loft floor helps to trap heat which rises through the house towards to roof and prevents heating an uninhabited space. It also helps keep a home cooler in summer.

Loft insulation is effective for at least 40 years and is the most cost-effective measure to install.

New installation regulations may require additional ventilation to be fitted as part of a loft install.

*Based on a gas heated, detached property.

How much can you save?

England, Scotland and Wales

Loft insulation (0 to 270mm)Detached houseSemi-detached houseMid terrace houseDetached bungalow
Fuel bill savings per year£445£270£240£440
Typical installation cost**   (if no grant applies)£1200£930£880£1200
Carbon dioxide savings (kgCO2/year)1000 kg620 kg550 kg1000 kg
Loft insulation top up (120 to 270mm)Detached houseSemi-detached houseMid terrace houseDetached bungalow
Fuel bill savings per year£40£25£25£40
Typical installation cost**    (if no grant applies)£930£760£720£940
Carbon dioxide savings (kgCO2/year)95 kg55 kg50 kg95 kg

Estimates based on insulating a gas-heated home with either an uninsulated loft, or topping up existing insulation from 120mm to 270mm. (The recommended depth for mineral wool insulation is 270mm but other materials require different depths). 

Is my home suitable?

Your home is suitable if:

Note: If you are privately renting you will need your landlord’s permission

Grants & Subsidies

Subject to your property and circumstances, there can be grants available to help towards the cost of installing Loft Insulation – with up to 100% grant funding available to homeowners.

For more information, head to our Financial Support page or contact Action Surrey on 0800 783 2503 or email info@actionsurrey.org

Alternatively, fill out our enquiry form online and one of our team will get in touch with you.

* All figures are taken from the Energy Saving Trust Feb 2024.

** Average unsubsidised professional installation costs, although these will vary. Figures are based on fuel prices as of Feb 2024.

Benefits of Solar Energy

Renewable Energy

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Energy Saving

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Easy Installation

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Energy Solution

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Technical Support

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Solar Maintenance

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Is your home suitable?

There are several criteria needed for a home to suit a biomass boiler:

  • Your property is not listed building or in a conservation area. To check contact your local council’s planning department.
  • Your property does not sit within a smoke control zones.
  • Check that you have a large enough space to store fuel, allow deliveries, and feed the boiler.
  • Check you have a local fuel supplier.
  • Make sure the biomass heating system is sized correctly to the room that it will be placed.
  • Check that you have enough room for a flue, which meets the regulations for a wood-burning appliance.

Frequently Asked Questions

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