Double glazing salespeople have a dubious reputation - but the extent to which this is fair varies hugely, as our double glazing customer satisfaction survey shows.
On this page, we explain how to get the best double glazing quote and give tips on steering clear of the tricks that some window companies use.
Double glazing quotes - and sidestepping sales tactics
Get quotes from more than one double glazing company (aim for three) and don't sign a contract on the spot.
We've found that window salespeople frequently quote a higher price to begin with, which they drop over the course of their sales visit. The price you're quoted could drop by 75%, or over £10,000, during a sales pitch. Be wary of a company using these sorts of tactics, or anyone who asks for a large deposit upfront.
Ensure each company gives you prices for exactly the same products and materials, so you can compare the quotes fairly. Compare the costs of what is included as standard and what is priced up separately as an optional upgrade or extra. Don't rush your decision; take time to look at the details and make a fully informed choice.
Double glazing prices
Double glazing can cost very different amounts depending on whether you use a local or national company, how many windows you're getting installed, the type of window and type of frame.
To find out how much you should expect to pay for different double glazing jobs, from sash windows to uPVC doors, see our double glazing pricing guide, which also includes tips from installers on how to save money and avoid paying too much.
Find a reputable double glazing company
Our double glazing company reviews show how major national brands compare to independent installers in areas such as value for money, the quotation process, and of course the quality of the windows. We'd also recommend using a company that's been around for 10 years or more.
If you decide to use an independent local company, be sure to ask friends and family for their recommendations. You can also find recommended double glazing installers on Which? Trusted Traders, where traders listed have been through our rigorous checks. If you've encountered a good double glazing company yourself, you can also make a recommendation using the site.
Fensa, BM Trada and Certass-registered glaziers
It's a good idea to choose a double glazing installer that is registered with Fensa, BM Trada or Certass. Membership of competent person schemes such as these means that companies can self-certify that their work complies with building regulations. In England and Wales, new and replacement windows must meet a certain level of energy efficiency, and you need to get a certificate to show that your windows comply with these regulations. An installer registered with one of the self-certification schemes will issue this certificate for you - otherwise your council will need to come and check the work. For the Channel Islands, Northern Ireland and Scotland, contact your local authority for information on applicable regulations for windows.
C & L Windows and Conservatories Ltd
65, Seymour Road
Gloucester
Gloucestershire
GL1 5PT
65, Seymour Road
Gloucester
Gloucestershire
GL1 5PT
01452 526028
www.candlwindows.co.uk