Triple Glazing vs Double Glazing. What is best?

One of the things to think about when buying new windows and doors are the differences between triple glazing vs double glazing. Virtually all our new windows and doors come with the option of triple glazing but it is worth the extra cost and is there noticeable benefits?

Triple glazing does give you better insulation and more energy-efficient windows as a starting point. In this article, we explain more about the glass we use in all our products and how triple glazing can improve these.

Triple glazing vs double glazing. What you need to know

triple glazing vs double glazing showing triple glazed samples in front of a window

As the name suggests, triple glazing uses three pieces of glass compared to the two pieces well-known with double glazed units. After all, the term ‘double glazing’ is used to describe newer windows or property with the original windows replaced.

Choosing the right glazing is as important as the investment you’re about to make in new windows and doors. As well as this, the recent awareness of greater energy efficiency and our energy usage on climate change will no doubt influence current and future buying decisions around glazing.

Triple glazing isn’t a new technology. Scandinavian countries have used triple glazing for more than ten years already and some climates even have quadruple glazing. You’ll also discover, composite windows using a combination of materials, often come as standard with triple glazing, that’s a perfect complement to the excellent insulation of timber inside and aluminium outside.

Both the latest generation of high specification double glazed units we use in our products contribute to energy efficiency. When comparing triple glazing vs double glazing, triple glazing is better.

Improved U-Values with Triple Glazing

The U-Values you get with new windows vary depending on the material and its insulation and the glass type. For instance, large minimal-framed sliding doors have excellent thermal performance even with double glazed units because there’s so much glass and so little aluminium.

Therefore many factors affect the energy efficiency of windows and even enhancements such as the aerogel insulation available in windows by Origin, again with excellent U-Values even with double glazing.

Triple glazing is used in the highest performing windows such as those used in Passivhaus and low-energy buildings. Where a typical double glazed unit high performance window can achieve around 1.4Wm2K U-Value, triple glazed windows go to U-Values below 1.0Wm2K. Remember, the lower the U-Value the better the energy efficiency of the window.

Extra insulation also means reduced condensation, although there are many factors that cause windows to condensate.

Therefore, if you’re looking for the best performing glass in your windows combined with an insulated or composite frame, triple glazing does make sense.

Sound insulation when comparing triple glazing vs double glazing

Acoustic glass uses two different thicknesses of glass, one usually being a laminated construction that helps lower sound levels. You’ll find acoustic glass used a lot on properties, residential or commercial, near busy roads, transport hubs, schools etc.

Triple glazing using three pieces of glass is better at sound insulation than double glazed units. If your triple glazed unit uses laminated glass in the middle pane, then the sound performance is better still.

Triple glazing is more secure

There’s no doubt, double glazing is already very secure, using toughened or enhanced security laminated glass in doors or windows.

Triple glazing undoubtedly gives a potential intruder a further barrier of glass to get through, so when you want insulation, acoustics and added security, again triple glazing is a consideration.

The disadvantages of triple glazing vs double glazing

There are a few disadvantages to consider with triple glazing, some being important, others subjective.

Triple glazing does cost more than double glazing. There’s a greater amount of glass with additional materials and manufacturing times. Typically you can expect to pay around 20-30% more for triple glazing vs double glazing as a glass cost.

The important factor is whether the energy-saving properties of triple glazing are worth the extra cost and especially taking into account a whole house full of triple glazed windows and doors. It can take many years to recoup the investment in triple glass compared with what it saves you on energy bills. However, it’s also a case of considering whether the enhanced comfort levels outweigh this.

Finally, there’s the extra weight. This isn’t a huge factor for most modern windows or doors as the hardware is designed for larger sizes and, in the case of doors, some pretty large sliding or folding panels. But you might want to consider the weight if, for example, there are disabled or elderly occupants that already find opening doors more difficult.

It’s also mentioned by some users, that whilst small, there’s a slight loss of visual clarity looking through three panes of glass compared to two.

Get a quote today for triple or double glazed windows and doors by Open Living

In June 2022 Building Regulations are changing requiring window replacements and in new build homes to have even better-performing windows. So there’s a strong argument that triple glazing will become the norm to meet these new requirements. As well as this, when comparing triple glazing vs double glazing, three pieces of glass do add more comfort inside the room.

Some windows like hybrid already come with triple glazing as standard, therefore it’s quite likely the market will shift to this glass type by default and address the issue of climate change and reducing heat loss even more.

Our Letchworth showroom showcases our entire range of windows and doors in all materials. Contact us today to arrange a viewing and discuss your glass options with a member of our team.

Published on January 3, 2022

Some of the images on our website are indicative images illustrating how products may look. Please contact us for full product details and specifications.
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Customer Reviews

Andy & his apprentice today were what you would expect today, professional, courteous.
Tom W.
Tom W.
16:58 03 Dec 21
Ordered Origin bifold doors. Diane, Marsha and Danny have been a pleasure to deal with. Slight delay to install date but all handled professionally. Fitters completed in one day as agreed. The product is excellent, would thoroughly recommend.
David N
David N
10:44 25 Sep 21
Lovely aluminium French Doors.Initial issue with square of door sorted out immediately and the response from both the office and the fitter was excellent. I would fully recommend Open Living Ltd.
colin H.
colin H.
13:43 02 Feb 21
Excellent service designing, removing previous (tough job it was) and installing two bespoke floor to celing windows.
Richard J.
Richard J.
13:22 19 Jan 21
Open Living was one of the last suppliers we discovered, but we were taken by their great range of windows, doors and lanterns as well as their sales team. Diane walked us through the many options but also listened to our preferences. Rather than steering us toward the most expensive option they were usually able to offer a choice on each aspect and the pricing was very transparent and competitive. Excellent quality ranges of windows, doors and lanterns. We opted for the Origin bi-fold doors, Origin aluminium windows and Atlas roof lights, all superb build quality/spec and great colour options.The installation team led by Danny and backed up in the office by the all-knowing Marsha and Linda were efficient, thorough and a pleasure to have on-site, coordinating well with our builder. Our neighbours also used Open Living before us and had a few issues at installation, but we believe these were mainly due to a supplier issue. All our windows, doors and roof lights went in as planned, well secured and sealed, with no damage.The only little point of feedback on their whole process is that the final quote and specification can spread across more than one document which did add a little uncertainty. This meant we had to double-check exactly what was coming. An all-inclusive final statement of all the options would be good. However, with a little bit of checking everything did come exactly as expected and we are extremely happy with the finished project.We would definitely recommend Open Living.
Paul E.
Paul E.
11:21 29 Aug 20
Fantastic service, great customer care. 5****
Angela I.
Angela I.
08:40 02 Jul 20
Good staff ,great fitters excellent product!
Paulo R.
Paulo R.
17:45 07 Jun 20
Open Living installed Origin bi-folding doors for our home. Their quality and service has been excellent throughout. Very trustworthy company. Right from the start, they provided good advice to help us select the right doors for our home; their quote was very competitive; their customer service was excellent throughout as they kept us updated on progress. The quality of the doors and the installation has been top-notch. Would highly recommend.
Kinjal P.
Kinjal P.
11:06 05 Jun 20
Bought a bifold door for our house extension. Great quality products and fantastic service. Very happy with Open Living
Ajith S.
Ajith S.
14:37 21 May 20
We have just had are bifolding doors fitted,We're over the moon. Marsha is very helpful and friendly.Service was great 😀Would recommend open living.Geoff
Geoff P.
Geoff P.
10:01 18 May 20
Open living installed our ORIGIN bi-fold doors about a year ago now. The fitters were great guys with really good standards. We are so pleased with our installation. It’s great 👍
Phil B.
Phil B.
22:48 02 May 20
We purchased 1 set of bifold and 1 set of French patio doors, both Origin. Sales approach and customer service was excellent. Fitting and installation also excellent. Can't fault the product, either. Would have been 5 stars if it wasn't for an issue we had around the height of the threshold, which turned out to be much higher than we wanted/were expecting. This issue was resolved in a satisfactory way after discussion. Would definitely recommend, but my advice is to make sure the threshold height for patio doors is agreed at the survey and written on the paperwork before parting with any money.
Ashley B.
Ashley B.
07:52 10 Mar 20
Lovely people to do business with, we bought some BiFold doors and a window from OpenLiving. We did have a couple of minor teething issues once fitted but these were dealt with quickly and without fuss. Recommended!
Dino L.
Dino L.
14:03 28 Sep 19
I looked into a number of companies before deciding on Open Living in Letchworth for our bifold doors. I wanted the bifolds to be from a manufacturer that was very regarded, and Origin (though Open Living can also supply from Schuco and some other suppliers) certainly fall in that camp. I also liked the fact that Open Living were close to home, which made repeated visits to their showroom easy to make. Throughout the process, Linda and Marsha were professional and courteous and I would thoroughly recommend anyone who is looking to get bifolds to put OpenLiving Ltd on their shortlist.
R W.
R W.
16:16 04 Jul 19
So far I have ordered 12.5m sliding doors, 1 set of aluminium bi-folds and 5 windows from Open Living. The fitters are all great guys, and they take time to do a good job.The service and the products supplied have been excellent. I will be ordering more windows and do not hesitate to recommend them.
jeff H.
jeff H.
11:30 17 May 19
Had some OW80 windows that were fitted some time ago (by other installers, who had lost the cill caps).Marsha kindly helped me get some replacement items from Origin despite there being no financial incentive for open living to do so.Assistance has been very much appreciated and would highly recommend.
Mark I.
Mark I.
07:32 13 Mar 19
Great service and choice of products. Highly recommend Open Living
Allison M.
Allison M.
11:11 10 Dec 18
Great service from start to finish. The origin windows and doors look fab. Can highly recommend.
Emma G.
Emma G.
11:15 27 Nov 18
Great price on a roof lantern. Installed on schedule.
Niall R.
Niall R.
14:51 31 Oct 18
Great Service from start to finish. Communication was great. The fitting team were first classWw will recommend and use again in the future.
Asa H.
Asa H.
18:30 04 Sep 18
Superb all roundMarsha was polite and informativeThe system itself is sleek and works greatThe fitter I had was polite and very effective, clean and professionalAnd the price was not only reasonable but the cheapestI genuinely don’t know why you would opt for a more expensive system or company when the origin system provided by this company does it allSuper happy and will use on other properties I haveUse these guys, awesome3772.00 for 3 leaf fitted in a week!! Immense !LukeBishops Stortford
luke J.
luke J.
18:33 18 Aug 18
Great service and brilliant product. Really happy with how the house now looks. Couldn’t recommend them any higher.
Stuart C.
Stuart C.
18:06 23 Jun 18
Had a great experience with Open Living. We had a 6m run of Origin bi-fold doors, an Atlas sky light some upvc windows installed. Customer Service and communication was good throughout, the installation guys did a good job and their technical guy was helpful with determining levels so we could achieve a level and flush threshold on the door. On top of this they were by far the lowest priced installer we found for the Origin doors which we had quoted by another three suppliers. Would recommend to others and will use again.
Richard N.
Richard N.
20:02 22 Jun 18
Great customer service from start to finish. Very helpful and competitive price.Installation was fast and of good standard.Would highly recommend Open Living.
Noleen P.
Noleen P.
11:15 06 Jun 18
We weren't quite sure what bi-folding doors would be best but all the options were clearly and concisely laid out before us and some great solutions suggested to the issues we hadn't been able to work out on our own or with our builder. The showroom has lots of choice, brilliantly set out. We decided that Open Living would install our doors and they came and did a wonderful job.Looking forward to the spring to really get our new "open living" lifestyle underway!!
Paul S.
Paul S.
17:26 27 Feb 17
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