Insulation
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 house | Semi-detached house | Mid terrace house | Detached 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 kg | 620 kg | 550 kg | 1000 kg |
| Loft insulation top up (120 to 270mm) | Detached house | Semi-detached house | Mid terrace house | Detached 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 kg | 55 kg | 50 kg | 95 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:
- Your loft insulation is below the recommended 270mm in depth
- Your loft has no damp and condensation problems.
- You are able to have all boarding in the loft removed to install the insulation
- You are able to have anything stored in the loft space removed.
- Your loft is at least 1.2 metres high (lower than this could be difficult to insulate),
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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 [email protected].
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.