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Horizontal lines on double glazing

Discussion in 'Windows and Doors' started by paulbrannan, 11 Jan 2021.

  1. paulbrannan

    paulbrannan

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    Hi,

    Moved in to a new house and the double glazing has regular horizontal lines on the panes that won't clean off . wondering if these have blown perhaps? Not sure how visible it is in the picture

    Thanks
     

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  3. Notch7

    Notch7

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    I reckon it's damage to the soft coat, which is probably on side 3 of the double glazing (counting from outside)

    Is it silvery?
     
  4. paulbrannan

    paulbrannan

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    Not really. Just looks like water marks more than anything
     
  5. crank39

    crank39

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    Can't see anything
     
  6. paulbrannan

    paulbrannan

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    I'll take a better picture in the day time tomorrow
     
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  8. paulbrannan

    paulbrannan

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    Is that more visible?
     

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  9. diy_fun_uk

    diy_fun_uk

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  10. paulbrannan

    paulbrannan

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  11. ronniecabers

    ronniecabers

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    Looks like roller marks from production line to me ( as glass is ' rolled ' through sealed unit plant to be washed) . If they are on the inside of the sealed unit ( which I suspect they are ) then you aren't going to get rid of them ...ever. My suspicion is that the units have indeed ' blown ' and this is the residue forming through calcium deposits being left on the glass
     
  12. paulbrannan

    paulbrannan

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    Cheers. Yes marks are inside. Was going to replace them anyway but nice to have confirmation
     
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