Many homes across the UK now feature either double or tripled glazed windows as they offer an array of benefits that not only save you money but also improve the comfort of your home. The differences between double and triple glazing are pretty straightforward, making it easy for you to make an informed decision on which windows may best be suited for you and your home.

Understanding the differences between double and triple glazing

If you’re creating your dream home from scratch, or simply think your current windows need to be upgraded, it is imperative that you know the difference between double and triple glazing. Having installed many Windows in Milton Keynes, we are very confident with our glazing knowledge and thought we should share our expertise with you. Both double and triple glazing provide you and your home with a number of benefits, so it is entirely down to personal preference which one you opt for. Currently, triple glazing is commonly used in places such as Scandinavia as they provide excellent heat insulation, but they are becoming increasingly popular across the UK. In fact, it wasn’t until the 1970s that even double glazing rose in popularity in the UK. Before this time, building codes were fairly relaxed, meaning people did not have the incentive to improve their home’s energy efficiency. You can read all about the minimum energy efficiency standards for UK properties here.

Although glazing may not seem like an important feature of your property, it has the potential to save you hundreds of pounds in energy bills and improve your home entirely. So, without further delay, here are the main differences between double and triple glazing.

What is double glazing?

Double glazing is fairly self-explanatory – double glazed windows consist of two panes of glass separated by a layer of air/gas. This gas, combined with the added layer of glass, acts as excellent insulation against both noise and heat loss. Many people opt to have double glazing installed throughout their home to reap the benefits of a warmer and quieter home. In fact, according to Which? 67% of homeowners said that their home was significantly warmer after getting double glazing. The money-saving benefit is also worth mentioning as it is what convinces many people to invest in double glazing. To put into perspective how much you could really save, the Energy Saving Trust claim that if all of the single-glazed windows were replaced in a detached house with A++ double glazed windows, you would save between £110 and £115 per year.

double glazing


There are a whole host of advantages of double glazing, which makes them so attractive to homeowners. As well as providing better insulation than traditional single glazing, double glazed windows can effectively reduce noise. This can be very beneficial if you live in a city or near a busy road where it can be noisy at all times of the day. Not only will double glazed windows block noise from the outside to create a quiet and peaceful environment, but it will also keep any noise coming from your house inside. For example, if you enjoy listening to music in the evenings, you can do this without the fear of disturbing your neighbours. Moreover, if you are quite security conscious of your home, then you should definitely consider double glazing, as they provide increased protection compared to traditional windows. Being considerably hard to break and difficult to force open from the outside, double glazed windows act as an effective burglar deterrent as your home will no longer be an easy target. Another great thing about double glazing is you can customise them in various ways that can even increase their level of security. By opting for laminated or toughened glass for your double glazed windows, you can minimise the risk of breakage and improve security. We offer double glazing in Milton Keynes which you can pair with any of our popular window styles, keeping your property secure at all times. Lastly, there is a common misconception that double glazing requires a lot of maintenance and specialist cleaning products to keep it in pristine condition, however, this is not the case. When it comes to cleaning your double glazing, the process is exactly the same as if you were cleaning any other glass window. We recommend using a microfibre cloth and non-abrasive cleaner/regular soapy water. If you opt for regular soapy water, add about 250ml of white vinegar as this will aid in creating a streak-free finish. Once thoroughly cleaned, all you need to do is wipe away any excess water with a squeegee. If these advantages have inspired you to utilise double glazing in your home, why not pair our excellent double glazing services with one of our conservatories in Milton Keynes – giving your property the ultimate home improvement!


Although double glazing has a great number of benefits, like anything, it also comes with a few drawbacks. Although we believe the advantages of double glazing far outweigh the disadvantages, we want to make you fully aware of all factors which could influence your decision. A downside of double glazing is that it cannot be repaired. The layer of insulation between the two panes of glass can be susceptible to condensation if the seal isn’t airtight. However, once sealed the panes cannot be pulled apart or repaired and, if condensation appears, the entire window will need to be replaced. However, if you use a reputable company to install your windows, it is highly unlikely you will experience this issue. Moreover, although double glazing is excellent at trapping heat during the winter months, this can be somewhat problematic during the summer. The heat which gets trapped inside the windows can result in a stuffy and uncomfortable hot interior, which is not what you need on a glorious summers day. For this reason, many people opt to have their windows tinted to block the heat and keep their home at optimum temperature.

triple glazing

What is triple glazing?

The latest innovation in window insulation comes in the form of triple glazing. Unlike double glazing which consists of two panes of glass, triple glazing utilises three panes. A layer of argon gas still separates the panes, but the extra layer of glass provides better insulation. As the most energy-efficient glazing option, triple glazing boats the lowest U-value of any domestic window. As we are all encouraged to reduce our carbon emissions and actively make changes which will reduce the impact of global warming, triple glazing is a desirable property feature.


The advantages of triple glazing are reasonably similar to those of double glazing, but there are a few additional benefits which you should know. As previously mentioned, triple glazing boasts an impressively low U-value, which reduces the risk of condensation. Triple glazed windows help towards minimising internal condensation issues as the heat is kept inside the building and stops cold external temperatures reacting with internal warm air – resulting in condensation. Another reason which makes triple glazing worth the investment is its durability. Lasting from anything between 10-35 years, and having the ability to withstand extreme weather conditions, you can feel confident that your triple glazing will last and remain a beneficial feature of your home for years to come.


In terms of the disadvantages of triple glazing, the main issue is cost. It is no surprise that triple glazing is a little more expensive than double glazing as there are extra materials needed to make the final product. As well as the added materials, triple glazing also requires more precise manufacturing conditions, making the production process more costly. Similarly, triple glazing is heavier than double glazing, which can sometimes impact transportation costs. With the expense of triple glazing being more than double glazing, the amount you save on your energy bill may not be in proportion to how much you spent on installation. However, do not be completely put off the idea of this glazing option as you will still be able to save more money compared to double glazing, it just may take longer to recoup your investment,

Over to you…

Now that you know the differences between double and triple glazing, you can make an informed decision as to which one may be best suited for your home and lifestyle. Both glazing options offer excellent benefits, which make them a great addition to any home, so it is entirely your choice as to which one you choose. If you would like to know more about glazing and what will work best in your home, please do not hesitate to contact us and a member of our expert team will be more than happy to advise you.