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Best double glazing companies


Article 4 of 5

Put us to the test

Our Test Labs compare features and prices on a range of products. Try Which? to unlock our reviews. You'll instantly be able to compare our test scores, so you can make sure you don't get stuck with a Don't Buy.

We've surveyed Safestyle's double glazing customers to find out how its products and service compare to other double glazing companies.

We've surveyed 2,239 double glazing customers to find out whether big brands Safestyle, Everest and Anglian are worth spending your money on, especially when pitted against independents local companies. 

Our results reveal that the difference between some of the companies is vast - the top-rated firm scored 86%, and the bottom just 56%.

Which? members can log in now to unlock the table below and reveal all Safestyle's ratings, as well as customer comments on the brand. 

If you're not a member, signing up for a trial subscription to Which? will give you access to this page, all our double glazing reviews, and our guide to double glazing prices, so you don't pay more than you should. 

If you want to compare all the brands and independents, go to the best and worst double glazing companies.

How did Safestyle score in our double glazing survey?

Once unlocked, the table below shows a full breakdown of how Safestyle was rated by its customers for a number of different factors. You can use our results to find out whether Safestyle double glazing is the best choice for you.

Everest survey results
Sales or installation factors Which? rating
Overall customer score
Knowledge of staff
Clarity of documents
Customer service
Quality of products
Value for money
Installers keeping to arranged times
Knowledge and helpfulness of installers
How well the installers communicated
Mess during and after installation
Quality of installation
After sales support

We asked Safestyle double glazing customers to rate the company so we can tell you exactly what it's like to buy double glazing from Safestyle. 

These ratings encompass crucial elements of the double glazing buying process. Examples include the knowledge of staff (both sales and installers), quality of products and installation, and clarity of documentation - such as the contract. 

These additional ratings help you to see which aspects the companies in our survey are clearly struggling on, and where they stand out from the crowd.

Safestyle customer comments

As well as customer scores and ratings, we have also collated a number of comments from Safestyle customers. This means you can get a true idea of what people are saying about the company. Logging in or signing up for a trial subscription to Which? will reveal what customers really think of Safestyle.

Signing up or logging in will also unlock:

  • double glazing sales and quotes - which includes tips from double glazing customers and experts on how to side-step sales tactics
  • double glazing prices - where you'll see the average prices for different types of doors and windows. You can use our pricing research to make sure you don't get overcharged for your double glazing.

Safestyle double glazing

Flick through the images below to see some examples of the types of double glazed windows and doors Safestyle provides, and read on below to learn more about its services.

What does Safestyle offer?

Areas in the UK Safestyle covers: England and Wales (not Scotland or Northern Ireland).

Types of windows: casement, sash, bay, tilt and turn, arched, heritage (traditional collection in a range of oak and paint finishes).

Types of doors: front and back, bi-fold, French, patio, half glazed and stable doors (where it opens at the top but not bottom) in uPVC (and timber effect) and composite.

Window energy ratings: windows are A-rated and its Eco Diamond windows are endorsed by the Energy Saving Trust. 

Window and door guarantees: 10-year guarantee for replacement and repair on all windows and doors. This can be transferred to new owners with no charge.

Other services Safestyle offers: porches, conservatories, orangaries, extensions, roofing work (roof trim, bargeboards, facias and soffits, cladding, guttering and downpipes).

Competent Persons Scheme: accredited by Fenestration Self-Assessment Scheme and Glass and Glazing Federation, which means Safestyle installers can self-certify that the double glazing is compliant with building regulations.

To find out more about the different types of windows and energy ratings, go to double glazing explained.