Affordable Hither Green Misted Windows & Double Glazing Repairs  

Are you struggling to see clearly out of your windows due to hideous misting between the glass? Then why not take advantage of our affordable Hither Green misted windows repairs? Because our expert double glazing repair team will clear up your misted units by offering Hither Green a top-quality window replacement service!

Many Hither Green homeowners choose to increase the value of their homes by investing in uPVC windows. Ensure that your double glazing remains in tip-top shape with our local Hither Green misted windows repair service. At A& E Locksmiths, we provide Southeast London and beyond with a range of Double Glazing Repairs. We skillfully boost the lifespan of your misted windows by offering a misted unit replacement throughout Hither Green and South East London.

Our team are fully employed and are taking care of repairs in the SE13 and Southeast London areas daily. Our headquarters is at 40 White Horse Hill, Chislehurst and you are more than welcome to pop in or call 020 8168 0581 to request a quote for your repair.

Replacement Glass For Hither Green Misted Windows

Unsightly cracks, breaks and misted windows not only detract from the appearance of your windows but also endanger the security of your home. When your double-glazed windows become misted, it indicates that calcium deposits have discoloured the glass. Your degraded unit now holds water inside.

Blackheath Misted Windows

Can You Repair a Blown Window?

The industry term ‘broken down’ or “Blown Window” relates to a double-glazed unit’s perimeter edge seal that has lost integrity. This means moisture is getting in, which degrades the condition of the glass. Although it may be challenging to detect initially, misting becomes prominent when sunlight or heat sources draw up the moisture. Separating the glass should not be tried as the sealed unit is factory-manufactured, meaning the glass is bonded.
If this occurs, there is no need to replace the complete window, including the frame. Our Blown Window Repair experts can, in fact, just replace the misted double glazed unit itself.


This is a question that many Hither Green based customers ask us. Double glazing is manufactured by setting two panes of glass together with a thermally efficient spacer bar in between. The spacer bar is slightly smaller than the glass’s overall dimensions to form a recess between the panels. The glass sections are then sealed together using a hot melt adhesive to create a double glazed unit.

The air confined between the two parts of glass (or gas for enhanced thermal efficiency) creates an insulating barrier that retains heat and keeps the cold out. When the seal on the double-glazed glass breaks down or fails, condensation will work its way inside the glass unit, resulting in misted double glazing.


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Double glazed sealed units are only referred to as broken down (failed) if moisture or “misting” develops between the two double glazed glass panes. More importantly, when misting does arise, it is clearly no longer a “sealed unit”. So, as a result, it will not be fulfilling the role of a sealed double glazed unit. The broken-down unit can no longer keep the cold out or enable heat generated by your heating system to be kept in, allowing solar gain to be held inside the home.

The seal can rupture for several reasons, including the age and condition of the window frame. On occasions, this could be due to a problem with the production of the unit. It could also be down to how the window was initially installed. Chemical cleaning materials applied on windows can also cause the seal to degrade over time.

Broken Down Unit Replacements

A& E Locksmiths can supply and install double glazed units to the strict British Standard, and we will furnish you with a 10 year sealed unit guarantee. Investing in home maintenance by replacing broken down (failed) sealed units will unquestionably be money well spent.


The task of replacing sealed units that have broken down is not all that significant throughout the hotter summer months. It is, however, essential to have the work done before winter. Broken sealed units are oozing costly energy out from your home into the atmosphere, causing your heating system to work harder than it needs to.

Failed sealed units can also be rather ugly, so, all in all, they are worth replacing to renew the energy efficiency of the windows and/or doors that the faulty sealed units are in.

For Hither Green homeowners with advanced energy rated aluminium or uPVC double glazing, replacing broken down sealed units are uncomplicated and straightforward to do. However, many homes with ancient fenestration systems or timber double glazing discover replacement can be more costly, mainly when the units are settled into the frames with putty rather than wooden beads.


This is a widespread misunderstanding. Replacement double glazed units are a considerably cheaper option than installing new windows. Because a misted-up window is due to the seal on the glass. The misting has nothing to do with the frame itself. Indeed, as long as the window frame is in good shape, you really just need to replace the glass unit. When undertaking double glazing repairs, it is an excellent moment to upgrade the glass to A-rated energy efficiency to get more reliable insulation and lower heating bills.


Why is there condensation on the inside of the interior glass pane?

Condensation on the inside of double glazing indicates a ventilation issue within that room that requires fixing. You can also create condensation inside the units when clothes are being dried in a room when it is cold and wet outdoors.

Checkatrade Review

"Les was a pleasure to work with. He was able to visit my property at short notice to repair my faulty uPVC window handles and locks. He provided accurate quotations in advance, arrived promptly and kept me informed of my options for the work all the way through. Very tidy workmanship too. I cannot recommend this company highly enough."

Why is there condensation on the outside of the external glass pane?

Condensation on the outside suggests the double glazed unit is working exactly as it should, and you will see it fade throughout the day as the sun intensifies. This event is a natural phenomenon and not a defect with the glass or the window. So to reiterate, this situation is not due to your double glazed window failing as outlined above. The problem occurs mainly in Spring and Autumn, when the glass temperature drops to a low level at night, with the mist of a heavy morning dew condensing upon the cold surface of the glass.

Have a Question?

We can offer a life line to Hither Green misted windows! With expert repairs and misted unit replacement to solve all your double-glazed issues!
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      Our Misted Window Service Areas Include:

      • Downham

      • Elmers End

      • Farnborough

      • Hayes

      • Keston

      • Locksbottom

      • Mottingham

      • Parkgate

      • Penge

      • Petts Wood

      • Southborough

      • St Mary Cray

      • St Paul’s Cray

      • Wigmore

      • South East London

      • South London and Kent

      Locksmiths Chislehurst- Our Location Areas