Double Glazing v's Triple Glazing

It has long been the question; what are the advantages and disadvantages of installing double glazing as opposed to triple glazing? This article aims to clear up this debate and discusses the advantages and disadvantages of triple v’s double-glazing when used in your conservatory or orangery side frames.


Householders are increasingly encouraged to install triple glazing as a modern alternative to double glazing, citing the benefits of triple glazed windows in terms of energy saving and noise reduction.

Triple glazing can be a significant investment to install in your home and it is important to understand the costs and benefits discussed in this article before making your decision

Double-glazing remains a viable option for your home, however triple glazing now offers extra benefits, which may tip the balance in its favour. Some of the differences often referenced are detailed below:


Heat-saving efficiency

The measurement of heat loss in window units is calculated in terms of a U-value, with high levels of insulation indicated by a low U-value.

Double glazed units normally offer a U-value of up to 1.0, while triple glazed units have a U-value of 1.0 or better, achieving as low as 0.7, compared to traditional, single-pane windows' with a U-value of 5.0 or more.


Energy cost reductions

It follows that the more efficient your windows are in terms of heat insulation, the more savings you can achieve in fuel bills. One thing often overlooked is if you feel your energy bills are at a reasonable level, you can keep the heating at the same level and simply enjoy higher comfort levels.

Investing in triple glazed windows can keep your home warmer and lead to a saving in utility bills, proven by the prevalence of triple glazing among our European neighbours in colder regions, such as Scandinavia. In Norway, new legislation is coming into effect calling for triple glazing in all new-build properties.


Keep room temperature stable

Triple glazing can also help keep your room temperature steady, both in winter and summer. A study by Germany's Passivhaus Institute showed although double-glazing retained room temperature efficiently, triple glazing was nine per cent more effective at keeping an even temperature, whatever the weather.


Noise reduction

It is often the topic of hot debate that triple glazing can lead to significant noise reduction, making it particularly beneficial for houses near major roads. This may actually not be the case as we look at the different properties of the glass that reduce sound in the home.

Triple glazing does have an additional layer of glass leading people to believe that this may actually be more soundproof however the true noise reduction element of any window, double or triple is the laminate. Laminate is a thin layer of PB plastic placed between the glass when formed. This layer is far more effective than glass at dispersing sound waves and therefore means adding laminate to any window type will be a much more effect sound reduction technique


Enhanced security

As we mentioned above, laminate is a great way to reduce sound in the home but it is also a great way to enhance the security of the glass in your windows. Both double and triple glazing can be enhanced in this way and will therefore see increased security. In both circumstances it is only one pane of the glass that will contain the laminate and therefore neither double nor triple glazing offer a significant advantage.


For further reading on triple glazing please read on here >>