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Last updated: 16 May 2022

Best Double Glazing Companies

Top 5 Double Glazing Companies in the UK

The double glazing industry has been growing in the UK since the 1980s. Currently, there are several double glazing companies and manufacturers offering double-glazed windows and doors across the nation. Choosing the one that fits you best can be difficult.

Double Glazing Companies

To help you avoid falling directly into the hands of the worst double glazing companies out there, Greenmatch has put together a list of 5 top firms and reviewed them. Our methodology includes the following criteria:

      • Latest customer reviews (based on Trustpilot Rating)
      • Special offers
      • Financial assistance
      • Availability of warranty or guarantee
      • Area of operations

Our review on double glazing companies includes:

I want to find the best double glazing companies near me! It is good to keep in mind that the above mentioned are the 5 biggest double glazing companies in the UK. Many other local firms also provide energy-efficient solutions. Just select your region to find the providers that fit your needs best.

Why Should You Invest in Double Glazing?

Before delving into the review, it is worth mentioning what double glazing is and how it works. You may also be wondering what you would improve if you decide to install double glazing. Don’t worry; we’ve got that covered.

Double glazing is the glazing process whereby two layers of glass are fitted so that a small gap of air remains between them. The gap is usually 12 to 16 mm wide and is filled with either normal dry air or, in some cases, argon, xenon, or krypton gas.

Watch how double glazing works in this 2-min video:

DOUBLE GLAZING  - What is it and how does it work? │GreenMatch

Here’s Why Smart Britons Are Opting for Double Glazing April 2022! 

    • Warmer and quieter house 
      Double glazing and uPVC windows decrease disruptive noises from outside and create an extra barrier to heat loss, so you will make your home quieter and warmer.
    • Maximise savings with better insulation 
      You’ll make financial savings on your energy bill.
    • Reduce your carbon footprint
      Double glazing units have better energy efficiency. They can significantly reduce the emissions of greenhouse gas from heating and cooling.
    • Double glazing is durable 
      According to all suppliers included in this review, double-glazed windows should last for at least 20 years if properly maintained. 
    • Long-term guarantee
      Also good to know that these companies provide long-term guarantees between 10 to 12 years.

Review of the Top 5 National Double Glazing Suppliers

a double glazing manufacturer can significantly impact the quality of your double-glazed units. There are many you can choose from, but don’t feel overwhelmed. We are here to help you save time and energy. Below you will find a list of 5 renowned suppliers that offer high-quality double glazing products.

Comparison of Top 5 Double Glazing Companies
Comparing Trustpilot rating (April 2022) Special Offers Finance Options Warranty/ Guarantee Area of Operations
Safestyle  4.1/5 Up to 20% lower prices than leading competitors 3 options of finance available 10 years  Across England and Wales
Everest 4.3/5 Multi-buy savings Loan or lending options available 10 years  Across England, Scotland, and Wales
Anglian 3.9/5 Up to £150 off upon online orders Up to £250 cash reward on recommendations to friends (unlimited) Credit available with a minimum deposit of £199 10 years  England, Scotland, and Wales 
CR Smith 4.8/5 Monthly special offers Loan option available. No deposit required 10 years  Primarily in Scotland 
First Home Improvements 4.1/5 Up to 30% off on their whole product range £100 deposit, interest-free credit options available 12 years Across the counties of England

1. Safestyle UK

Safestyle4 stars.

Safestyle UK has been installing windows and doors in Wales and England for over 20 years. It offers you a quote online with just one form to fill in. They are one of the few companies to give you a quote on the same day and not keep the customers waiting. All of their products come with a 10-year guarantee. They also offer you price matching for quotes from other double glazing companies.

Safestyle UK also gives you the option to choose a finance plan. Their most appealing options are the ‘24 Months Interest-Free Credit’ plan and the ‘Buy Now Pay in 12 Months’ plan.

2. Everest

Everest4.5 stars.

Everest Ltd. has been in business for over 50 years. With a customer base of more than 2 million people, they're one of the UK's most experienced and biggest double glazing companies. Their expertise and high-quality products come at a higher cost. Hence, Everest double glazing quotes will probably not be the cheapest offer. However, as they price-match with quotes from other double glazing companies, it would be worth keeping an eye on other installers' deals. You can also check Everest’s multi-buy savings special offer.

Like most double glazing companies, it only provides you with a quote after one of its installers has inspected your house. Conveniently, you’re able to book an appointment for free online. This company also offers you a premium lifetime guarantee on their uPVC windows for condensation and fogging between the panes and a ‘Personal Loan’ or ‘Secured Lending’ option with Kandoo.

3. Anglian

Anglian4 stars.

Anglian Ltd was established in 1966 and is, alongside Everest, one of the biggest double glazing companies in the UK. Their customers value them because of their exceptional quality and competitive prices. Anglian Ltd offers a 10-year guarantee on uPVC, aluminium or wooden doors, windows and conservatories.

Additionally, they price-match quotes for uPVC products within seven days. Like most double glazing companies, they give you a quote after one of their team members has inspected your home. Anglian gives you the option to finance your double glazing units. However, this credit is subject to affordability, status and lending criteria with a minimum deposit of £199.

4. CR Smith

CR Smith5 stars.

CR Smith has been part of Scotland’s business community for a century. They offer multiple options for windows and doors for your home or a conservatory. With CR Smith, you can get a loan without a deposit required. This credit is, however, subject to status and affordability.

Their website includes a monthly updated section with the company’s latest offers. They seem to have one of the best customer services with the highest Trustpilot rating.

5. Home Improvements

First Home Improvements4 stars.

First Home Improvements has been in the market for over 45 years. They have an extensive choice of double-glazed and uPVC windows and doors. They also have products available for conservatories and orangeries. 

They display testimonials from their customers that show their high customer satisfaction practices. Providing a 12-year warranty across their range of windows is among their top features.

Company Bodies—How to Protect Your Rights

All of the companies listed above do their best at protecting consumers' rights. However, it is also essential to check if your installer is certified by one of the regulatory bodies for the double glazing industry. They verify double glazing companies to ensure that your units are installed and fitted correctly.

Key regulatory bodies:

  • Double Glazing and Conservatory Ombudsman Scheme (DGCOS): It is an organisation that protects consumers’ rights. Their services are free and include, among others, mediation to fully resolve issues with double glazing companies, a consumer advice line, guarantees, and insurance.
  • Fenestration Self-Assessment Scheme (FENSA): It is a scheme implemented by the Glass and Glazing Federation (GGF). Like the DGCOS, FENSA also protects your rights by verifying double glazing companies, making sure that these comply with the Building Regulations.
  • Certass: It is a certification body accredited by the United Kingdom Accreditation Service (UKAS). Certass offers the same services as FENSA and provides mediation support, like DGCOS.

How to Choose the Right Installer

Once you’ve decided on your home needs, you’ll have to look at various double glazing manufacturers. It's essential that you consult professionals, compare different installers and choose the company that can comply with all your requirements, including the most competitive double glazing prices.

Generally, double glazing prices vary depending on the type of window/door, material (e.g. uPVC, aluminium, timber), and size. Other factors may also affect your final bill. For instance, the number of windows, type of glass, frame colour, the floor where you want to install the window/door (e.g. ground floor vs the second floor), and potential delivery costs.

Follow these 4 tips while choosing an installer:

1 seek help from professionals.

2 make sure they're certified.

Get multiple quotes.

4 Don't rush things, take your time choosing.

Keep in mind that the double glazing companies listed above are the biggest installers and manufacturers in the UK. Many other smaller local double glazing companies offer you similar services. If you prefer to choose a local installer or manufacturer, be sure they're certified by one of the above schemes.

However, consider that choosing a big company may be in your best interest even if small ones can sometimes offer better prices. For instance, larger companies can usually afford better warranties and guarantees, and many are insurance backed. 

By clicking on your region, you will find the best providers that fit your needs.

Ana Kukoska
Written by Ana Kukoska, Former Writer

Ana is a Content Coordinator at GreenMatch. With a background in journalism and digital marketing, she has several years of experience in research, analysis, and content creation. On top of this, her focus lies on SEO and digital PR in the following areas: geen sector, sustainability, business, innovation, and more. She and her content team have been published in reputable sites like The Odyssey Online, My News Desk, Zero Waste Home and more