Green Homes Grants for Double Glazing Windows and Doors

After being launched as part of the government's plan to "build back greener" the Green Homes Grant scheme is now closed.

Only 6 months after launching in September 2020, to much fanfare, the scheme will come to an end at 5pm on Wednesday 31st March 2021. The previous end date was set to be 31st March 2022 after a recent decision to extend the initiative.

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Until March 2022, you can apply for a government grant to carry out efficiency improvements on your home. In some cases, this can include a grant towards new windows and doors.

Green Homes Grants are primarily intended to help homeowners improve insulation or install renewable heating, but if you get one of the primary grants, you can also apply for a grant for windows and doors.

NOTE: This page was updated September 30th 2020.

What is the Green Homes Grant?

The government is putting aside £2 billion in funding to enable around 600,000 households in the UK to become more energy efficient. The money will be distributed via vouchers called Green Homes Grants which will be up to £5,000 in value, with up to £10,000 available for the lowest-income households.

The grants are intended to help UK homeowners reduce their heating costs and carbon footprint as part of the government's £3 billion carbon reduction strategy. The UK needs to reach net-zero carbon emissions by 2050, but 20% of the country's carbon comes from our heating systems.

UK properties are famously poorly insulated, particularly when compared to other European countries. This means it is harder to keep heat inside the home, meaning we use our heating systems for longer and at higher temperatures to compensate. This leads to unnecessary fuel consumption and, as the majority of UK households rely on natural gas or oil fired boilers, high carbon emissions. Using renewable energy to heat our homes and/or improving insulation (e.g. by installing insulation and double glazing) will reduce heat loss, reduce carbon emissions and heating bills.

Unfortunately, the majority of UK households do not have the cash available to make their property more efficient, which is where the Green Homes Grants come in. The government has claimed that Green Homes Grants could help families to save up to £600 per year on their energy bills.

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What work will the Green Homes Grants cover?

The Green Homes Grants will cover the cost of around two-thirds of the upfront cost of energy efficiency improvements.

The scheme has two categories of home improvements: primary and secondary. Window replacements have been classed as a secondary measure and as such are not eligible for funding unless you are receiving a grant for a primary measure.

Primary Green Homes Grants

  • Insulation: Solid wall, cavity wall, under-floor, loft, flat roof, room in roof, park home.
  • Low carbon heat: Air source heat pump, ground source heat pump, solar thermal
  • If you are having primary work completed, you may also be eligible for a secondary grant.

    Secondary Green Homes Grants

  • Windows and doors: Double/triple glazing (where replacing single glazing), secondary glazing (in addition to single glazing), upgrading to energy efficient doors (where replacing doors installed prior to 2002).
  • Draught proofing.
  • Heating controls and insulation: appliance thermostats, hot water tank thermostats, hot water tank insulation, smart heating controls, zone controls, delayed start thermostat, thermostatic radiator valves.
  • How much could you get towards new windows and doors?

    Green Homes Grants will cover two-thirds of the cost of primary improvements like insulation and renewable heating. These grants are capped at £5,000 for general applications and £10,000 for low-income households. As grants for windows and doors are only available as a secondary measure, you can only receive a secondary grant with the same value as the primary grant.

    So, if you receive £2,500 towards the cost of installing insulation or a heat pump, you can get up to £2,500 towards the cost of new windows. If you receive £1,000 towards the cost of insulation, you could receive £1,000 towards new windows or doors. You cannot apply for a grant only to replace windows or doors.

    Benefits of double and triple glazed windows

    If your windows are poorly sealed and/or single glazed, you could be losing as much as 10% of your heating to the outside air. With a Green Homes Grant lowering the upfront cost of installation, you could see several long term benefits after installing double or triple glazing.

    Lower heating bills
    With less heat escaping through leaky windows, you will not need to use your heating as much and can reduce your heating bills.

    Feel more comfortable - all year round
    Double or triple glazing will keep more heat inside during the winter and stop hot air from entering the home in the summer.

    Improve home security
    Double and triple glazed windows are much harder and louder to break which is a deterrent for potential intruders and makes your home more secure.

    Reduce condensation
    With an airtight seal around new windows you can prevent moisture from building up and prevent mould from forming.

    Make your home more peaceful
    Double glazed windows can also reduce noise pollution which will make your home quieter and improve your privacy if you live in a busy area.

    Reduce your carbon emissions
    Because you will not need to use your heating as much, you can reduce your carbon emissions and do your bit for the planet.

    Boost the value of your property
    With so many benefits, installing double or triple glazing can make your home more attractive to potential buyers.

    Who is eligible for a Green Homes Grant for windows?

    You cannot apply for a grant towards window or door replacement if you are not also applying for a grant towards a primary home improvement. Here is the eligibility criteria for primary Green Homes Grants.

    To apply to the general Green Homes Grants scheme for funding up to £5,000, the following properties are eligible:

  • All owner-occupied homes (including long-leaseholders, shared ownership)
  • Landlords of private rented sector domestic properties
  • Landlords of social sector domestic properties (including LA owned homes)
  • Park home owners (for residential sites including Gypsy and Traveller sites)
  • New-build properties (domestic and non-domestic) are not eligible.

    To qualify for the Green Home Grants low-income scheme (which offers grants of up to £10,000 to only owner-occupied properties and park homes) you must be in receipt of at least one of the following benefits:

  • Income based Jobseekers allowance (JSA)
  • Income based Employment & Support Allowance (ESA)
  • Income Support (IS)
  • Pension Guarantee Credit
  • Working Tax Credit (WTC)
  • Child Tax Credits (CTC)
  • Universal Credit (UC)
  • Disability Living Allowance (DLA)
  • Personal Independence Payment (PIP)
  • Attendance Allowance
  • Carer's Allowance
  • Severe Disablement Allowance
  • Industrial Injuries Disablement Benefit
  • Contribution based Jobseekers allowance (JSA)
  • Contribution based Employment & Support Allowance (ESA)
  • Housing benefit
  • How do homeowners apply for a Green Homes Grant?

    To get a grant for new windows or doors, you will need to apply for a primary grant to improve insulation or install a renewable heating system. Only then can you get a secondary grant for windows or doors.

    The online application process is now open and will last until the end of March 2022. Only window installers who are registered with the scheme and are TrustMark approved will be able to complete work under the Green Homes Grants scheme.

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