Best double glazing companies Double glazing companies rated
Double glazing companies are renowned for dubious selling techniques - so it's really little wonder that only around 6% of Which? members say they trust glazing firms.
If you’re wary of who to buy from, our 2014 double glazing company satisfaction survey results in the table below reveal Which? customer scores for the big four national brands - Anglian, Everest, Safestyle and Zenith - as well as local independent companies and traders. You can use our survey results to help you find a reputable installer.
Table notes: Customer score combines overall satisfaction and likelihood to recommend. Sample sizes: Anglian (134), Everest (112), independent and local builders, joiners, carpenters (135), independent and local double glazing companies (2,129), Safestyle (83), Zenith (31). Survey conducted in July 2014.
Independent double glazing installers
The vast majority of Which? members have used small independent companies rather than big brands, with some citing the traders' need to maintain their strong reputations in the community as the reason for going local.
Our guide to double glazing sales and quotes will help you cut straight to the chase when companies try the hard sell, and contains tips from local installers themselves.
How Which? rates double glazing companies
In 2014, we asked 2,872 Which? members questions about their experience of double glazing installation and companies. All had double glazing installed in the last five years with either a local/independent firm or a big name such as Anglian, Everest, Safestyle or Zenith.
We asked them to rate the company they used for various aspects of their experience, such as quotation process and customer service. The table above reveals satisfaction ratings and customer scores for the brands covered by our survey.
- How much should you pay? Find out in our double glazing pricing guide
- Got more questions? Our experts explain double glazing
- Save more energy and cut your bills, with our guide to how to install loft insulation
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