How does the GBIS save you money on EWI materials?

    May 21, 2024

The GBIS (Great British Insulation Scheme) is a valuable initiative aimed at enhancing energy efficiency in homes across the UK. By focusing on the installation of external wall insulation (EWI), the GBIS not only promotes better thermal performance but also offers financial savings on EWI materials. It is part of a broader legislative framework under the Energy Company Obligation (ECO), aiming to mitigate fuel poverty and reduce domestic energy usage through strategic insulation upgrades.

How does the application process for the GBIS work?

The GBIS has a new, streamlined process that allows homeowners to apply for the scheme through various means. System designers, like EWI Pro, have a team dedicated to providing GBIS and ECO-funded projects. Through longstanding partnerships with installers offering funding-backed retrofits, they can fast-track you towards getting funding. The process has input from governing bodies and Ofgem in the following:

What level of funding can you get, and how does the GBIS save you money?

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    Ofgem, which administers GBIS, ensures rigorous monitoring and compliance. This oversight guarantees that the savings and benefits projected from EWI installations are realised, ensuring that investments are cost-effective in the long term.

    GBIS saves you money

    Who is eligible to save money with the GBIS?

    The Great British Insulation Scheme (GBIS) has been designed to maximise accessibility and widen the pool of beneficiaries, focusing particularly on households that can most benefit from improved insulation.

    Key Eligibility Criteria

    Income and Vulnerability Criteria:
    Energy Performance Certificate (EPC) Rating:
    Home Ownership and Tenure Types:
    Council Tax Bands:

    Flexible Eligibility (GBIS Flex)

    GBIS Flex is an innovative aspect of the scheme, allowing local authorities to identify and refer households that might not meet standard eligibility criteria but are considered vulnerable or at risk. This flexibility ensures that the scheme can address specific local needs and reach households that might be overlooked.

    Additional Support for Rural and Off-Gas Homes

    Homes in rural areas or those not connected to the gas network often face higher heating costs and have fewer options for efficient heating. GBIS recognises their unique challenges and provides specific provisions for these homes, including potential uplifts in support.

    Continuous Assessment and Updates

    GBIS eligibility criteria are periodically reviewed and updated to reflect economic, social, and environmental changes. This dynamic approach ensures that the scheme remains relevant and effective in meeting the needs of the population it serves.

    How much does EWI cost, and where can you get the materials?

    The cost of EWI varies dramatically depending on the type of materials chosen. The more benefits you opt for, like mineral wool’s fire resistance, the higher the cost. The cost also depends on the type and size of home you have. However, with some help from our friends at EWI Store, we’ve put together a rough guide on the pricing you can expect:

    Type of home

    Size (sqm)








    £15,000 – £20,000


    20 years




    £8,000 – £10,000


    15 years




    £6,000 – £8,000

    £500 – £700

    12-15 years




    £6,000 – £8,000


    12-15 years

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