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Green Home Energy Efficiency Improvements to Double Glazing


The Government has now scrapped the Green Home Grants Scheme. Please get in touch with the bodies responsible for the scheme if you require further information.


Government Website



What is the value of the vouchers?

Later in August 2020, under the Green Homes Grant scheme, homeowners in England can check eligibility for vouchers worth up to two-thirds of the cost of hiring tradespeople to upgrade the energy efficiency of their home – the maximum contribution will be £5,000, or for those on lower incomes, a 100% grant up to £10,000 will be available for certain work.

The vouchers, which will be issued from the end of September, will help pay for energy efficiency improvements, that will help cut energy bills and potentially save families hundreds of pounds a year.


What improvements will the scheme cover?

A statement from the Department for Business, Energy & Industrial Strategy (BEIS),  said consumers will be able to use a TrustMark Registered Business from their local area to carry out energy-efficient measures in and around their homes. They will be able to use the vouchers to install one or more of the following:

• solid wall, under-floor, cavity wall or roof insulation
• air source or ground source heat pump
• solar thermal

In addition, households can use their voucher for further energy-saving measures. These include one or more of the following:

• double or triple glazing/secondary glazing, when replacing single glazing
• upgrading to energy-efficient doors
• hot water tank/appliance tank thermostats/heating controls

The grant scheme is available until the end of March 2021. 

The Green Homes Grant scheme, which Chancellor Rishi Sunak launched in his summer statement, will see £2bn invested in improving the energy efficiency of the nation’s homes.

Simon Ayers, CEO of TrustMark, welcomed the opportunity to work with the industry sectors to support the delivery of quality work and ensure that consumers receive the high standard of work they should expect. The home improvements carried out under the scheme will have greater levels of technical standards and commented that the Green Homes Grant scheme is the “kickstart” the construction and energy sector need to help recover from the coronavirus pandemic and help the UK reach the target of being carbon neutral by 2050.  

He said: “As we undertake this journey, the construction and energy industries will play a vital role in the delivery of low carbon homes, providing healthier and more comfortable living conditions. 

“The Green Homes Grant scheme is an important step in creating new jobs, protecting the existing and delivering low carbon housing.  As an industry, we need to collaborate to support the initiative, ensure businesses are supported and consumers can rely on the tradespeople that carry out work in and around their homes making them fit for the future. The vouchers will help prime the market and allow eligible property owners to make energy efficiency improvements and save on their energy bills.” 

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-Last updated 8 August 2020. Main Source: Trustmark. Click here to visit the unedited article.

Click here for Government Publication of the Green Home Grant Scheme

Green Home Grant Scheme

Frequently Asked Questions

The Green Homes Grant is a government-funded voucher scheme to help domestic customers install energy efficiency measures on their homes, helping them reduce their energy bills and their carbon emissions.

Under the new scheme, the Government will fund up to two thirds of the cost of home improvements for over 600,000 homes, supporting over 100,000 jobs in green construction. 

The Green Homes Grant is a key part of our green economic recovery following COVID-19, which will also help us on the road towards reaching net zero emissions by 2050.

The Green Homes Grant applies to England only – so won’t cover homes in Scotland, Wales or Northern Ireland.

The Green Homes Grant allows homeowners to apply for a voucher that funds up to two thirds of the cost of hiring trades people to upgrade the energy performance of their homes – up to a maximum contribution of £5,000. It could help save families up to £600 a year on their energy bills.

For example, if a homeowner of a semi-detached or end-terrace installed cavity wall and floor insulation, costing around £4,000, the homeowner would pay just £1,320 – with the government paying £2,680. Doing so could save the owner over £200 annually on their bills and reduce their carbon footprint by cutting 700 kg of CO2 a year from their home alone. 

Low income and vulnerable households, including park homeowners and those on certain benefits, will be eligible for a grant covering up to 100% of the cost, up to £10,000.

Vouchers will contribute towards the cost of specific home insulation and/or low carbon heating measures. Homeowners and social and private landlords will need to use their voucher to install at least one of the following, which they will receive before works commence: 

1. Solid wall, under-floor, cavity wall, loft, flat roof, room in roof or park home insulation; or
2. Air source or ground source heat pump or solar thermal (where the home is suitably insulated). 

In addition, households can use their voucher for further energy saving measures, up to the value of 50% of the voucher (and capped at the amount of the government contribution to the primary measures). These include one or more of the following: 

1. Draught proofing: draught-proofing your home (for example around windows
    and doors) can block up unwanted gaps that let cold air in and warm air out.
2. Windows and doors: Double/triple glazing (where replacing single glazing),  
    secondary glazing (in addition to single glazing), energy efficient replacement doors.
3. 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

For example, if a homeowner wants to install cavity wall insulation and receives a voucher worth £400 towards this measure, they can receive up to £400 more for further energy efficiency measures, such as replacing single glazed with double glazed windows.  

  • The main scheme is open to owner occupiers (freehold/leasehold), landlords who rent privately or though the social rented sector. It is not open to non-domestic properties or to new build homes.
  • The low-income and vulnerable scheme is open to owner-occupied households and park-home owners.
  • The Green Home Grant Local Authority Delivery element will focus on owner occupiers, those in the private and social rented sector, with a household income of under £30,000. Local Authorities will set out detailed eligibility criteria in due course.

The scheme will start at the end of September 2020 and close at the end of March 2021.

No – a voucher can only be issued for work to be completed under the scheme and not before. For further information, please refer to the administrator of the scheme.

Yes they are! Government has confirmed that double glazing, triple glazing, and secondary glazing will be included within the scheme.

Eligible homeowners may only use the grant for these measures if upgrading from single glazing provided that one or more of the primary works have been carried out prior to changing the UPVC double glazing windows and doors. Also, the cost of the double glazing cannot not exceed the cost of the primary work.

Provided you meet the above criteria, vouchers can be used on the following:

  • Double glazed windows
  • Triple glazed windows
  • Secondary glazing
  • Energy efficient doors

No. This grant only covers new windows or doors if you have single glazing. Homeowners cannot upgrade from the existing double glazing to a more energy efficient double glazing.

However, homeowners may be able to use it on secondary glazing if they already have upvc double glazing.

In late August 2020, homeowners across England will be able to check their eligibility on the Simple Energy Advice website. For the general scheme, the following properties are eligible:

1. All owner-occupied homes (including long-leaseholders, shared ownership)
2. Landlords of private rented sector domestic properties
3. Landlords of social sector domestic properties (including Local Authority owned homes)
4. Park homeowners (for residential sites including Gypsy and Traveller sites)

New-build domestic properties and non-domestic properties are not eligible.

If they are carrying out works at your property within the Green Homes Grant Scheme, they must be registered with TrustMark. You can always check this on the TrustMark website at Ada Windows Ltd is registered with TrustMark. Visit our page

The Green Homes Grant scheme will deliver energy efficiency improvements to over 600,000 homes, supporting over 100,000 jobs if all vouchers are claimed. It could help save families up to £600 a year on their energy bills.

It will make people’s homes warmer and more environmentally friendly. It will deliver average savings of £257 for the main scheme, and as much as £640 a year for those living off the gas grid in the low-income and vulnerable households’ scheme.

The Green Homes Grant scheme will be time-limited, to help stimulate the economic recovery and support and create tens of thousands of green jobs immediately.

Allocations for future years will be determined at the forthcoming Spending Review in the Autumn.

Later this month, homeowners across England will be able to access advice and support on improving the energy efficiency of their homes from the Simple Energy Advice service. They will suggest appropriate home improvements they may be able to apply for vouchers to help fund. 

The Simple Energy Advice will then offer households a list of approved TrustMark Registered Businesses including those approved via the Microgeneration Certification Scheme (MCS) scheme in their local area to carry out the work. 

Once the works are agreed, vouchers will start to be issued from the end of September so work can commence. 

At the moment, it appears that all applications for the Green Homes Grant Scheme will open in September. Application will be places on the Simple Energy Advice website. However, you will first need to obtain a quote from an approved installer.

The Simple Energy Advice (SEA) website also recommends some suitable home improvements to homeowners. Based on the recommendations, you will be required to obtain a quote from a local company who is TrustMark registered or MCS certified.

Only if and when the works are deemed suitable, a voucher will be issued to homeowners.

If you are looking for a quote for double glazing, we can provide you with one once you book in a site visit.

Only from late September will it be possible to apply for the grant online.

Unfortunately we are currently not able to participate in the scheme.

Simply fill in our online form and we’ll be in touch with you as soon as possible. Or simply call us on 020 8803 8004 or email to start the quotation process.

North London's Premier fabricator and installer

Ada Windows Ltd production factory is based in Enfield, North London. We are manufacturers but also installers of selected double glazing products. We specialise in the fabrication and installation of uPVC and aluminium replacement windows, doors, bifold and conservatories. Service operation covers most parts of London, however also operate in Hertfordshire, Essex and Kent. The firm is FENSA registered and it provides 10 year guarantee on services and products.

uPVC & aluminium windows & doors with style

The Company’s management continues to build a wealth of experience, since 2001. Service coverage has extended to a wider area while also developing a wider range of products and quality checks to ensure quality installations above the minimum regulatory standards. Whether to match the style of your home or simply your preference, our products are available in an extensive range of styles, hardware, colours, glazing options and accessories. We are North London’s favourite fabrication and installation company.

Top Quality Installation FENSA regulated

Ada Windows Ltd works closely with FENSA, the regulatory body in the window and door industry, which means our installations are inspected regularly to ensure high quality fitting. In addition, our services are  covered by a 10 year guarantee, including 10 year insurance backed guarantee which protects your deposit. Whether uPVC or aluminium, you can rest assured in choosing Ada Windows Ltd for the replacement of your window, door, bifold and conservatory requirements.

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