Condensation on the outside of new windows explained

Condensation on the outside of new windows can surprise many people who’ve invested in the latest double or triple glazed windows and patio doors. So why does it happen and does it mean your new windows are faulty? No, your new windows are actually working exactly as they should. In fact, condensation on the outside of new windows is a sign of just how energy efficient they are. Here’s an explanation of this phenomenon you’ll see more often in autumn and winter and why it happens.

An explanation about condensation on windows and doors

condensation on the outside of new windows showing a misted glass pane
It’s common to see condensation on the outside new windows at sunrise.

If you’re replacing your old windows that are frequently condensated, the reason for this is simple. Window glass is usually the coldest surface and especially with single glazed windows. So as we go about our daily lives, cooking, heating, showering, drying clothes inside and even breathing as we sleep. All of these actions cause moisture. Moisture needs somewhere to settle and the first cold surface is where it goes.

But even if you do have new windows or double glazing, it’s worth bearing in mind they will never eliminate condensation. The only way to prevent this is to ensure our rooms are well ventilated. Humidity in our homes and especially in winter when we tend to keep everything closed is a cause of condensation.

Condensation on the outside of new windows and why it happens

What’s surprised a lot of buyers of new windows is condensation on the outside. It’s tempting to think there’s a problem, but there isn’t and there’s a very simple explanation why.

First of all is understanding that your windows are more energy-efficient than ever before. Highly insulated frames in our aluminium windows combine with glass with a higher specification than ever before. It’s standard today to windows fitted with double glazed units with a soft-coat low-emissivity coating, warm edge spacer bars and argon gas fill. These are far superior to old double glazed windows that are just two pieces of glass with air in between.

Just like condensation on the inside, the outside pane of glass is the coldest surface compared to the inside of your home. Because the insulation of your windows is working so well in not letting heat escape, the result is (quite obviously) that your outside pane of glass is cooler!

It’s the makeup of the insulated frames in aluminium, multiple chamber frames in PVCu and the outstanding insulation of wood in our hybrid glazing systems, combined with high-tech glass units.

Low-E glass is now widely used and this works brilliantly in reflecting heat and energy. For your new windows, Low-E glass keeps the glass temperature cold outside and warm inside. Even better with this coating is how it retains the heat consistently in your home making your energy bills lower too.

Even simple, heat is no longer escaping from your windows and the cold outside isn’t getting through either.

Why many external factors affect outside condensation

It’s the conditions outside that also affect condensation on the outside of new windows. The property elevations, cloudy or clear conditions, how exposed your windows are, compared to those in city environments.

All these factors and more can affect how much you get on the outside pane of glass and some windows may get none at all.

What can you do about external condensation?

Other than going to clean your windows or waiting for the outside temperature to rise, there’s not a lot you can do. You’ll probably find condensation in the early hours of the day.

Condensation on the outside of new windows means better windows

At Open Living, our entire range of high quality aluminium, PVCu and composite products comes with the latest in design, glass, security and energy-efficiency. You can see examples of our glass in our showroom, so why not get in touch and arrange a viewing?

The Glass and Glazing Federation also has some excellent further reading on condensation as well as preventative measures inside your home for better living.

Published on October 29, 2021

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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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