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Double-glazing finance – what to do if you don’t qualify for a grant

Tom Gill
Written By
Christopher McFadden
Reviewed By
Updated on 14 February 2025
  • Many double-glazing companies offer financing options
  • These can help you spread the cost in manageable installments
  • Double-glazing helps insulate your home and reduce outside noise
A window installer

Double-glazing is one of the best ways to make your home warmer, quieter, and more secure.

As with any long-term investment in your home, there are upfront costs to consider. Installing double-glazing in a three-bedroom home costs, on average, between £ 4,000 and £ 16,500 (between 8 and 10 windows).

Some people will qualify for government grants that will help reduce these costs, but the criteria for these grants are quite strict, and not everyone will be eligible.

This is why some people choose to get their double-glazing installed on finance, which helps them spread the upfront costs into more manageable monthly payments.

In addition to the comfort and quiet, the Energy Saving Trust estimates that installing double-glazing in an average semi-detached house will save roughly £140-£150 (depending on quality) a year on its energy bills, so it is well worth the investment.

In this guide, we’ll cover everything you need to know about double-glazing finance, including a typical finance payment plan and other ways to reduce the upfront costs of getting new windows and doors for your home.

If you want to install double-glazing, we can help. Fill in our online form, and our trusted partners will contact you with a no-obligation quote.

At the time of writing (September 2024), double-glazing companies like AnglianEverest, and Safestyle offer credit terms at a representative 12.9% APR – rates vary subject to status – and credit terms that start from 36 months.

Deposits for windows, doors, roof trim, and garage doors start from just £249. This excludes timber windows and doors, where deposits start from £999.

Look at the table below to see what you would be paying each month, how much you would be paying, and how a typical finance option for doors and windows breaks down over a 96-month term.

The below example is for illustration purposes only using information from Anglian, Everest and Safestyle for a 96-month finance plan. The interest rates used are from February 2025. Interest is charged from the date an account is opened.
Contract price*£6,340
Deposit£249
Amount of credit£6,091
Interest rate12.2% per annum fixed
Representative APR12.90%
Total term96 months
Monthly repayment£99.65
Total amount payable£9,815.40

This example is for illustration purposes and is courtesy of Safestyle UK.

For a free bespoke quote for new windows and doors for your home, fill in our simple form and a trusted installer will be in touch. There are a small number of schemes available for homeowners looking to install double-glazing that are unable to qualify for a grant:

  • Green Deal Loan scheme
  • Barclays Greener Home Reward

You’ll also be able to get financing options from some of the best-known double glazing companies in the UK, including Anglian and Everest. Both provide comprehensive finance plans to help you spread the cost of installing double glazing throughout your home.

The government initially set up the Green Deal Loan scheme to help people make energy-saving home improvements. Unfortunately, government involvement ended in 2015, but the scheme again found life in private providers’ hands.

The Green Deal Loan scheme allows you to spread the cost of improvements over a 10 to 25-year period. You can use the scheme to help pay to install double glazing, as well as:

  • Energy-efficient lighting
  • Insulation (lofts or walls)
  • Draught-proofing windows and doors
  • Improving heating
  • Green technologies, including solar power and wind power

You’ll pay back your loan via monthly payments on your energy bill. What’s good is that your energy bills should be reduced due to the changes, which should help offset the monthly cost of the repayments.

To qualify for the Green Deal Loan scheme, you’ll need to get your property assessed by a qualified assessor. They’ll recommend the home improvements that will most impact your home’s overall energy efficiency. It’s not available in Northern Ireland.

The Barclays Greener Home Reward is a one-time cash reward that can contribute to the costs of double glazing or other eco-friendly home improvements, including:

The reward depends on the measures you take —for double or triple glazing, it’s a maximum of £500, so you won’t be saving all that much with the scheme.

You need a residential mortgage with Barclays to qualify for the Greener Home Reward. You also need to meet the following requirements:

  • Have a direct debit for your mortgage payments
  • Be up to date on all mortgage payments
  • Haven’t claimed the Greener Home Reward before
  • Not be in breach of your mortgage conditions
  • Proof of payments or work carried out, dated within three months of your claim

You’ll also need to use a Trustmark-registered business to make improvements in your home. Once the upgrades are completed, you can claim your reward from Barclays. Ensure you meet all the requirements before starting the work; otherwise, your claim could be rejected.

Yes, there are several things you can do to save money on your double-glazing that don’t rely on qualifying for grants or financing:

  • Get multiple quotes and negotiate — It’s a good idea to get quotes from several companies to compare prices. Also, negotiating a price can be a good idea to see if you can get a price reduction (sometimes possible if buying a certain number of windows).
  • Plan around sales — Window companies often have sales at certain times of the year. If you’re not in a rush, you could be patient and wait for a sale.
  • Replace some windows, not all — You don’t have to replace all of your windows at once. Even replacing just a few windows will improve your home’s energy efficiency, sound isolation, and security.
  • Look for group discounts – Some companies offer discounts or financial incentives for buying windows with a neighbour or friends or for referrals. If you know your neighbours are purchasing windows, consider approaching the company they’re using and asking for a group discount.

Aside from installing double-glazing, you can explore many other options to help save money on your energy bills. These include things like replacing older tungsten light bulbs with low-energy LEDs or fluorescent bulbs, installing draughtproofing, or installing insulation in your loft.

There are other more creative measures, too, like:

  • You can get an air fryer to cut down on oven energy costs
  • Buy smart plugs to monitor and control consumer electronic power use
  • Turn appliances off rather than leave them on standby to eliminate “vampiric power loss.”
  • If you have a hot water cylinder, you can top up its insulation jacket to help save some cash on water heating
  • If you have an open fireplace (and don’t use it), you can avoid it to prevent the loss (and cut heating costs).

Other more capital-intensive measures include installing solar panels, considering cavity or solid wall insulation, and insulating your floors. Depending on your circumstances, you may be able to get some financial help with low-cost loans or government grants.

  • Double-glazing finance helps you spread the cost of installing double-glazed windows.
  • Companies such as Anglian, Everest, and Safestyle offer financing options.
  • If you don’t qualify for grants, there are other ways to save money on double glazing.
  • It’s still worth checking to see if you qualify for a grant before applying for finance options.

Written by

Tom Gill

Tom joined The Eco Experts over a year ago and has since covered the carbon footprint of the Roman Empire, profiled the world’s largest solar farms, and investigated what a 100% renewable UK would look like.

He has a particular interest in the global energy market and how it works, including the ongoing semiconductor shortage, the future of hydrogen, and Cornwall’s growing lithium industry.

Tom also regularly attends Grand Designs Live as a Green Living Expert, where he provides expert solar panel advice to members of the public.

He frequently focuses on niche environmental topics such as the nurdle problem, clever ways to undo the effects of climate change, and whether sand batteries could store energy for clean heating in the winter.

If there’s an environmental niche to be covered, it’s a safe bet Tom’s already thinking of how to write about it.

You can get in touch with Tom via email.

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Reviewed By

Christopher McFadden

Christopher is an Environment, Health & Safety (EHS) specialist with extensive experience advising consumer and trade clients on energy efficiency and sustainability.

With a Master’s in Earth Sciences from Cardiff University, Christopher has attained professional energy and sustainability auditing qualifications and various postgraduate certificates and diplomas. He is a qualified and accredited Level 3 and Level 4 non-domestic and domestic energy assessor, a Green Deal assessor, and a Practitioner member of the Institute of Environmental Management and Assessment (IEMA). He also recently qualified as a level 5 Retrofit coordinator.

In addition to his day job, Christopher has also honed his skills as a STEM writer for several well-known online publishers, sharing his knowledge and passion for science, engineering, and dinosaurs with millions of readers around the world.

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