Blown Double Glazed Window Panes

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A lot of our repairs for double glazing is to replace double glazing glass that is misted or blown. So if your windows have misting with condensation on the inside, between the two panes of glass, contact us!

We offer double glazed unit replacement.

You can send us the approximate sizes and we can give you an idea of cost.

It is a lot lower cost to replace double glazing glass than a new window.

Other UPVC window repair questions? Then please look at our window repair page.

Would you like to see how replacement double glazed glass units aremade? Here is a brief video https://youtu.be/K2wm-DhHIgQ

We also repair doors locks and adjust doors.

What Causes Blown or Misted Double Glazed Windows?

Windows mist or get full of water or condensation for a variety of reasons, this could be age related, poor installation, or due to weather.

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Age of the Sealed Double Glazed Units Can Cause Misted or Blown Windows

The age of the double glazing can be a factor.

As the windows get older, the seals can break down. This lets moisture get into what was once a sealed unit and causes the blown misted glass.

This seems to be a factor in about 10% of the misted double glazed window panes we replace.

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Installation of the Double Glazing Can Cause Misted Windows

The original installation could have been flawed.

Bad installation can let the two panes of glass move. This breaks the seal and causes condensation or misted double glazing.

Or it could be a screw has come up from the frame into the sealant, breaking it, and then you have to deal with the window condensation.

This seems to be a factor in about 60% of the blown replacement window panes.

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Weather Can Cause Misted Double Glazing Glass to Fail

Another thing that can cause failure is weather. Hot spells can break down the sealed glass unit. For instance, a south facing side of the house has much more expansion and contraction of the sealed units than the north facing side of the house.

This expansion causes the seal to be gone on double glazing, it breaks down and your windows mist or fog.

Again, this seems to be a factor in about 30% of the blown double glazed windows we replace.

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How Can We Help? Sealed Double Glazed Glass Unit Replacement!

We replace the blown double glazed glass with new glass units and take away the old ones.

If you have rough measurements of the misted double glazed pane, we can give you an idea of cost if you send them to us via email.

Also, it can be helpful to send a photo as well, showing the blown window in relation to the wall.

We do not use your measurements to order the replacement glass, it is only to give you an idea of cost.

Then, if the quote is acceptable, we will then come out and get accurate measurements and confirm the cost and get your approval before ordering.

Will the misted glass pane problem go away if left, or do I need to do something about it?

Left alone, the misting may well come and go for a time, depending on the humidity, but the double glazed pane is now defective, and the misted pane needs to be replaced with a new double glazed pane. Otherwise, it will just get worse over time.

The whole window does not need replacing. Only the blown double glazed unit with the condensation needs replacing.

What to Keep In Mind About the Quote

Please keep in mind that there are things that can affect the cost.

For instance, there is a cost difference between clear standard glass, and glass that needs to be safety glass, or has a type of leading, or Georgian bars, or is obscure glass, like found in many bathrooms. If you know your glass is one of these, just mention it. Otherwise we will get a replacement glass quote in standard clear glass, and confirm the type of replacement glass needed after a home visit.

Why not email us for a no obligation quote for your misted double glazed window pane replacement by using our Contact Form?

You can see our 5* reviews at Yell.com and Google

We also repair doors locks and adjust doors.

Other UPVC window repair questions? Then please look at our window repair page.

Or take a look at this page to see our frequently asked questions.