Question 1

Can double glazing be repaired?

Accepted Answer

In many cases, yes. From blown units to stiff hinges and failed seals, a lot of common double glazing problems can be fixed without a full replacement. A tradesperson can usually tell you within a quick inspection whether repair or replacement makes more sense.

Question 2

Can condensation or fogging between double glazing be fixed?

Accepted Answer

Yes. Fogging or misting between the panes is caused by a broken seal that's let moisture into the gap, and in most cases the glass unit can be swapped out on its own without replacing the whole frame. [Request a quote](https://www.checkatrade.com/post-a-job) to get a repair sorted.

Question 3

Can condensation between double glazing be fixed?

Accepted Answer

Yes. A tradesperson can usually replace just the misted glass unit rather than the whole window, without needing to replace the whole frame. [Request a quote](https://www.checkatrade.com/post-a-job) to get started.

Question 4

Can I replace just one pane in a double glazed window?

Accepted Answer

Yes. If only one pane is blown or cracked, many glaziers can replace just that glass unit without touching the frame. It’s a cost-effective fix that restores performance without the faff of a full replacement.

Question 5

How do I know if my double glazing is blown?

Accepted Answer

Look for misting or condensation trapped between the panes. It’s a sign the seal has failed and the insulating gas has escaped.

__Other clues:__

- The window feels colder than it should
- You’re getting more noise from outside

Question 6

Is it worth repairing double glazing?

Accepted Answer

Often, yes. If the frame is sound and the damage is limited to the glass unit or seals, a repair is usually far cheaper than a full window replacement. It's only worth considering a full replacement if the frame itself is warped, rotten, or beyond economical repair.

Question 7

How much does window replacement cost?

Accepted Answer

The exact cost will depend on several factors, including the size, style, material, and glazing type.

As a rough guide, here are some average costs for the supply and installation of a new window in the UK:

-   Casement windows – **£500**    
-   Sash windows – **£1,000**    
-   Sliding windows – **£700**    
-   Tilt and turn windows – **£700**    
-   Bay windows – **£2,500**    
-   Bow windows – **£3,000**
    
It’s worth noting that these are estimated average costs, and actual prices may vary.

**Factors affecting the cost of window replacement**

To get a more accurate price for replacing your window(s), you’ll want to consider the following factors:

-   Size of the window(s) – Larger windows generally cost more
    
-   Type of glazing – Double or triple glazing is more expensive than single glazing
    
-   Window style – Bay windows and other complex styles cost more than standard windows
    
-   Quality and type of materials – Higher-quality windows often come with a higher price tag and different materials, like uPVC and timber, have varying costs
    
-   Number of windows – The more windows you need, the higher the overall cost
    
-   Location – Labour costs often vary depending on where you live, e.g. London and the South East are typically more expensive than other parts of the country

Learn more about window replacement pricing in our [guide to double glazing costs](https://www.checkatrade.com/blog/cost-guides/double-glazing-cost/).

Question 8

Can you fix condensation between double glazing?

Accepted Answer

Yes - it's one of the most common double glazing repairs. A tradesperson specialising in double glazed window repair can replace the misted unit. [Enter your postcode](https://www.checkatrade.com/) to get started.

Double Glazing Repair in London (45)

Describe your job

Describe your job

Express

Window Reseal by Express

More Express services coming soon

CLEARVIEW GLAZING SERVICES LLP

Services & skills

Abbey Repairs (Double Glazing Repairs and Conservatory Repairs)

Services & skills

Ewell Window Company

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We Fix Double Glazing Ltd

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1st Class Glass

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Windows To Fit Ltd

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Ethinex Ltd

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Aj Doors & Windows Ltd

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Ruby Dog Ltd

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Wallington Glass Ltd

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D C Glass & Glazing

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Building Solutions

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Find double glazing repairs near you in London

How much does double glazing repair cost in London?

Find the right person for your windows in London

Looking for more tradespeople in London?

Double Glazing Repair in London (45)

Search results

Describe your job

Describe your job

Express

Window Reseal by Express

More Express services coming soon

CLEARVIEW GLAZING SERVICES LLP

Services & skills

Abbey Repairs (Double Glazing Repairs and Conservatory Repairs)

Services & skills

Ewell Window Company

Services & skills

We Fix Double Glazing Ltd

Services & skills

1st Class Glass

Services & skills

Windows To Fit Ltd

Services & skills

Ethinex Ltd

Services & skills

Aj Doors & Windows Ltd

Services & skills

Ruby Dog Ltd

Services & skills

Wallington Glass Ltd

Services & skills

D C Glass & Glazing

Services & skills

Building Solutions

Services & skills

Find double glazing repairs near you in London

How much does double glazing repair cost in London?

Find the right person for your windows in London

Looking for more tradespeople in London?