How to Demist Double Glazing

July 13, 2017

Condensation in Double Glazing

Misted up windows can be annoying. They’re normally associated with old single glazed windows or faulty double glazing. This is not always the case and it can often be easily solved. Let’s clear up the myths around condensation and find the solutions for demisting double glazed windows.

Here at Jack of Glass, we have created a handy guide for you on how you can demist your double glazing and reduce condensation. If you have any further questions on how you can demist your windows and doors, then please get in touch with our team today.

white upvc sliding sash window glazing - how to demist double glazing

What is Condensation?

Condensation is the process where water vapour turns into a liquid. Water vapour is produced daily by showering, cooking or drying clothes inside. Even breathing could cause condensation to form in smaller rooms. You can see it in windows that look misted or by a pooling of water around the frame. When it encounters a colder surface such as a window pane, condensation occurs. Sometimes this occurs on some windows and not others as it depends on their position.

Should Double Glazing Ever Get Condensation?

The short answer to this is yes but not in all cases. You might assume any condensation is a sign of faulty windows but sometimes it’s the complete opposite. Condensation on the outside of windows mean they’re doing the job they’re meant to. The space in-between your double glazing prevents cold air being transferred to the inside pane. When air comes into contact with a colder surface, condensation forms. With high quality double glazing, heat can’t move between the glass. If the outside temperature is warmer than the window, condensation occurs.

If you have new double glazing and find condensation on the inside, don’t panic and think there’s something wrong. Condensation on the inside pane can be annoying as water can pool and cause mould if left too long. The blame can be put on faulty windows but it could actually be that they’re extremely efficient. If the temperature inside your home is higher or more humid than your windows this will cause your windows to mist up.

Older windows often have less condensation but this could be because they’re letting air pass through them. This might be ok in summer but during the winter this will leave you with a colder home and higher heating bills.

If you have any questions about condensation and what you can do to remove condensation from double glazing, contact our team today!

golden oak upvc casement window - how to demist double glazing

How to Demist Double Glazing?

In most cases you don’t need to demist double glazing as it should clear by itself. Condensation on the outside should clear up with warmer temperatures during the day. Make sure you let plenty of air circulate if the condensation is inside to prevent damp and mould. If you have an extractor fan, use this when cooking and dry clothes outside when possible. Open windows to let air flow around, especially after showering.

When is Condensation a Problem?

If you have condensation in-between the panes of your double glazing whether it is your casement windows or patio doors, this could be an issue. This is normally caused by your window seals failing. The seals create an airtight and weatherproof environment. This stops changing temperatures affecting your windows and your home’s comfort levels. If they’re damaged or worn, moisture can collect inside which can cause further problems. It might just be the glass that needs replacing but be prepared that it could be the whole window unit. Give our team a call today on 01494 611 107 if you have any questions on condensation inside double glazed windows.

upvc double glazing amersham

Replacement Double Glazing, High Wycombe & Buckinghamshire

If the seals on your windows have become damaged, you will probably need to have the windows replaced. Here at Jack of Glass, the clue’s in the name. We are experts in all things glass from double glazing to mirrors and splashbacks. Our windows are all tailor made and we can create any kind of thickness, colour or style that you prefer.

Our glass offers exceptionally high levels of insulation to keep your home at a comfortable temperature all year round. This also protects your home from the elements and unwanted noise. Get in touch if you want any more advice on demisting double glazing units or to discuss replacing your windows.

Double Glazing Prices

If you’d like to replace your windows, but want to know exactly how much they will cost, then we can provide you with affordable and bespoke prices based on your exact specifications.

Why not try our online quote tool and you can instantly receive a personalised price based on your project requirements. You just need to submit your details and within minutes you can get a bespoke price. It’s really that easy!

If you’d like to find out more, then you can give us a call on 01494 611 107 or send us a message via our online form. We would be happy to answer any questions you may have and provide you with all the advice you need.

Start your Quote


Areas we serve

Operating out of High Wycombe for 30 years, we know the local area like the back of our hand. We supply and install high quality glass and glazing to homes in Princes Risborough, Chesham, Amersham, Beaconsfield, Marlow and beyond.

If you have a particular way of improving your home in mind and reside anywhere in or around a 20 mile radius, feel free to get in touch with our reliable team. We’ll be in touch swiftly.

K. Piowman-sale

Jack of Glass have done a wonderful job in putting a coloured glass worktop to my dressing table and installing a mirror. Has totally transformed my room. Unbelievable. Take a look at their showroom some really good ideas with glass, fantastic colours.

A. Hunt

Outstanding quality of service, and great at catering to bespoke requests. They are fantastic value for money, and a lovely bunch of boys to boot 🙂

H. Ellams

Great service at Wycombe Museum last Friday. The guys went above and beyond with their glass delivery service. This is the 3rd or 4th time i’ve used them.Just to let you know I shared it on High Wycombe facebook page too.

M. Harber

Incredible transformation. Great service. Amazingly fast replacement of a very big window!! Everything cleared up and great value for money.

M. Shoaib

Purchased 2 green house windows, got the size wrong, went back to get it cut to a smaller size FREE of charge and stayed after closing time until I arrived.

N. Shanta

I highly recommend Jack of Glass! Matt, Chris and their team deliver an outstanding service. I am extremely happy with the job that they did in our flat. It really exceeded all of my expectations and the room looks absolutely beautiful with the floor to ceiling mirrors.

S. Nandha

Great team and with great quality to detail on the finish of my glass splashbacks, also the bi-fold door works a treat for our dream house

Mr. Barlow

I recently needed to replace around ten or so panes of glass in my greenhouse . Very good service very nice guys ,cut and wrapped the glass while i waited and even made an alteration to a pane that i had measured wrongly .Thank you for the help and i will use again.

A. Lovell

We have recently had our front door and windows replaced by Jack of Glass. They were great. The communication was amazing, we knew every step of the way what was happening and they left place spotless. Our new door and windows have completely changed the house. Very happy and would recommend to anyone.

Josh Webb

Jack of glass have recently replaced all my windows efficiently and to a high standard. The price was also very reasonable. The customer service was outstanding along with the services they provide. Highly recommended.

Mr Bennett

I had to replace a small double glazed panel in a window. I though it would be difficult to get anybody interested as it was such a small job. However, Jack of Glass did the work. They visited the house to take the measurements, ordered the replacement glass and fitted it all very efficiently and at a reasonable cost. I will use them again.

Start A Quote

Contact Us

Start A QuoteGet In Touch