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Double Glazing Basics

10th May 2024

Most modern houses are built as standard with double – or even triple- glazing, and many older properties have had double glazed windows retrofitted. But what exactly is double glazing? What are its benefits? And do you need to get double glazed windows replaced?

What is double glazing?

Double glazing is exactly what it sounds like: a sealed unit of two panes of glass. The two glass panels trap argon between them; as a poor insulator, the gas stops heat transfer from the inside out (or vice-versa). Double glazing usually sits in a uPVC frame; today these come in a range of colours and styles, and wooden frames are also available (although more expensive).

What are the benefits of double glazed windows?

Reduced energy bills. One of the key benefits of installing double-glazed windows is that they help to prevent warm air from leaving your home, reducing the need for heating and, hence, reducing energy bills. Double glazed windows won’t quite pay for themselves, but they will definitely save you money.
Noise reduction. The extra layer of glass doesn’t just insulate against the cold, it insulates against sound, too. Double glazed windows and doors are excellent at muting outside noises; something that is particularly valuable if you live near a busy road or in a noisy area.
Low maintenance. Unlike older wooden windows, which need to be maintained and painted regularly, double glazed units are very low maintenance. The frames don’t discolour, peel or crack; a quick wash and they will look as good as new.
Security. Double glazing is also more secure than single glazing or older double-glazed units. Modern double glazing has reinforced frames for added home security.
Aesthetics and house value. With a host of different designs to choose from, double glazing adds kerb appeal to your home and can make a property look fresh and well-cared-for. It can add value to your property, too.

Are there any disadvantages of double glazing?

One potential issue with double glazing is the reduced ventilation in the home. This is a particular problem when double glazed windows are fitted in an older property. Just as heat is trapped in the home, so is moisture, so the use of double glazing in a property that was not built for it can lead to damp or condensation problems. These issues can be rectified; speak to a double glazing specialist for advice, or contact a local builder and get air vents installed.

While most properties can install double glazing without any issues, some properties have restrictions on what work they can do. If you live in a listed building, check with your local authority to see what types of window you can install without breaching guidelines.

The springtime may not be the time of year to traditionally consider double glazing, which means that it is also a great time of year to pick up some great offers. Take a look at some trusted, rated, double glazing specialists near you, and plan for warmer, drier winters.

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