A quarter of heat is lost through the roof in an uninsulated property.

By installing insulation in your loft, attic or flat roof you will reduce heat loss and save money on your heating bills.

Check if you are eligible for funding
What is loft insulation?

Loft insulation is a simple and effective way to improve the energy efficiency of your home and lower your bills. Materials used for loft insulation are typically glass fibre or renewable wood fibre, which when installed into your loft space, prevent heat from escaping.

Loft insulation can be installed between the joists of your loft floor or in between the rafters that support the roof.

How do I know if I need loft insulation?

If you have easy access to your loft then take a look at the current floor space of your loft, between the rafters or joists. If there is a thick layer of insulation between 270mm and 300mm in situ it may be that loft insulation has already been installed.

Benefits of loft insulation


Reduce your heating bills

Improve your home’s energy efficiency rating

Increase the value of your home

Loft Insulation FAQ’s

Can my loft be used for storage after being insulated?

You can’t compress the loft insulation as this will cause it to lose its thermal qualities. You would need to ensure that any storage does not sit directly on top of the insulation.

Does my loft need to be empty to complete the insulation process?

For the installation of loft insulation you will need to remove any personal belongings from this space.

Is there such a thing as too much loft insulation?

Yes. The ideal amount of insulation is 270-300mm deep. This will also ensure there is adequate ventilation. If you install too much loft insulation you could encourage condensation which could lead to mould.

Do I need to remove old loft insulation before adding new?

We don’t recommend you take on the task of removing existing insulation. Your loft insulation experts will remove any insulation that may not be fit for purpose, or top up with new additional insulation.

How do I insulate a loft conversion?

If your loft is also a living space, you will need to insulate the inside of your roof rather than your loft floor. Roof insulation is more costly to install than loft insulation, however it will save money on your fuel bills.

How long does loft insulation last for?

Loft insulation will last indefinitely and will save you money on your heating bills by keeping your loft area warm and cosy throughout the year.

How long does it take to install loft insulation?

Installing loft insulation is generally a quick and effective process, taking between 1- 3 hours providing all personal belongings have been removed before the installer arrives.

What funding is available?

ECO4 funding is available for loft insulation improvements in certain areas, check your ECO scheme eligibility here.

The Great British Insulation Scheme now provides funding for loft insulation , check your ECO scheme eligibility.

Potential savings from Loft Insulation Grants


Loft Insulation Grant

What is a free loft insulation grant?

Individuals with the lowest incomes, as well as those who are in less energy-efficient housing or in the lowest council tax bands, are eligible for ECO grants.

How do grants for loft insulation work?

To begin, eligibility is assessed by a number of factors such as household income, EPC rating, and whether or not you are currently getting any government benefits. Residential Energy Services will then work with you to select the best energy-saving strategies for your home. We also collaborate with a trusted network of partners to verify that such measures are implemented correctly.

How do I apply for a loft insulation grant?

Contacting Residential Energy Services is the quickest and easiest way to determine if you qualify, put together your qualifying requirements, and contact energy suppliers for loft insulation grant assistance.

How much can I get from an ECO grant?

Free home energy efficiency upgrades are provided to qualifying households via the Great British Insulation Scheme and the ECO4 initiative. Grant financing is solely reliant on establishing the best measure for your house at the moment.

How much money is available in ECO grants?

The Great British Insulation Scheme is anticipated to cost £1 billion. The ECO4 initiative, which will run through March 2026, is estimated to provide up to £4 billion in energy efficiency and heating improvements.

I already receive government funding; can I apply for an ECO grant?

If you are currently receiving government assistance, you may be ineligible for the ECO4 scheme. You may, however, be eligible for free insulating measures under the Great British Insulation Scheme.

Who pays for improvements to my home?

The Energy Company Obligation is a government programme in which energy companies support energy efficiency solutions for your house that are installed by approved licenced installers.

Who decides what measures I’m suitable for?

The energy supplier ultimately decides which steps are appropriate; however, a home energy assessment with RES may make this process more accurate, relevant, and efficient, ensuring you’re getting exactly the help you need.

Loft Insulation Grant Eligibility

Am I eligible for ECO funding?

If you own your home or rent privately and your EPC grade is D or lower and you get any of the benefits that qualify for ECO4, you should be able to get help through either ECO4 or the Great British Insulation Scheme.

Is the ECO scheme means tested?

If you get means-tested government benefits, the ECO initiative may be suitable for you. Check your eligibility before contacting your energy provider.

What benefits do I need to receive to get ECO funding?

If you receive at least one of the following government benefits the energy company obligation should be able to support you with new energy efficiency measures:

  • Child Benefit
  • Pension Guarantee Credit
  • Income-related Employment and Support Allowance (ESA)
  • Income-based Jobseeker’s Allowance (JSA)
  • Income Support
  • Tax Credits (Child Tax Credits and Working Tax Credits)
  • Universal Credit
  • Housing benefit
  • Pension credit saving credit

I already receive ECO funding, can I apply for a new grant?

If you have previously received government assistance and your household still qualifies, you may be eligible for the Great British Insulation Scheme.

What EPC rating do I need to be eligible for ECO funding?

To qualify for ECO4 funding, your property must have an EPC rating of D, E, F or G. To qualify for funding under the Great British Insulation Scheme, your EPC rating must be D or below and your Council Tax Band A-D.

What tax bands are supported by the ECO scheme?

Households with low incomes in council tax categories A to D are eligible for assistance under the Great British Insulation Scheme.

I live in a rural area, am I eligible for ECO funding?

If you do not live in a tax band A-D but have an EPC rating of D or lower, you may still be eligible for ECO assistance. Check with RES to see whether you are eligible.

Is my home suitable for Loft Insulation?