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  • FIRST POST
    • gundo
    • By gundo 4th Aug 08, 10:27 PM
    • 190Posts
    • 58Thanks
    gundo
    Double Glazing - K Glass or Planitherm?
    • #1
    • 4th Aug 08, 10:27 PM
    Double Glazing - K Glass or Planitherm? 4th Aug 08 at 10:27 PM
    I'm looking at getting double glazing. Most of the quotes have specified Pilkington K glass but one guy recommends "Planitherm". He reckons the U value is better and there's less discolouration (K glass has a reputation for making nets look grubby due to a slight tinting effect). Personally I don't care re appearance I just want the best glass. Anyone know what's best? The DG guy says that Planitherm and K glass are the same price and he stresses how much better Planitherm is than K glass and that I'll regret getting K glass.
    Trying hard to be a good moneysaver.
Page 1
    • thebaldwindowfitter
    • By thebaldwindowfitter 4th Aug 08, 11:24 PM
    • 1,294 Posts
    • 631 Thanks
    thebaldwindowfitter
    • #2
    • 4th Aug 08, 11:24 PM
    • #2
    • 4th Aug 08, 11:24 PM
    planitherm does have a better u value and is made by st gobaine which is frances equivellent of pilkingtons .they also do a lot of glass for motor trade
  • McAzrael
    • #3
    • 5th Aug 08, 7:03 AM
    • #3
    • 5th Aug 08, 7:03 AM
    I prefer Planitherm - better insulation, clear (K is blue) and cheaper. But I shouldn't obsess over it, the difference is slight.
  • littlesos
    • #4
    • 5th Aug 08, 2:19 PM
    • #4
    • 5th Aug 08, 2:19 PM
    I prefer Planitherm - better insulation, clear (K is blue) and cheaper. But I shouldn't obsess over it, the difference is slight.
    Originally posted by McAzrael
    K-glass is clear too, are you thinking of Activ-Blue, which is as the name suggests blue. Activ blue is the self-cleaning, insulating glass you find in conservatory roofs, although pilkington now make a clear version now.
    • ih8stress
    • By ih8stress 5th Aug 08, 2:41 PM
    • 1,705 Posts
    • 4,720 Thanks
    ih8stress
    • #5
    • 5th Aug 08, 2:41 PM
    • #5
    • 5th Aug 08, 2:41 PM
    I'm looking at getting double glazing. Most of the quotes have specified Pilkington K glass but one guy recommends "Planitherm". He reckons the U value is better and there's less discolouration (K glass has a reputation for making nets look grubby due to a slight tinting effect). Personally I don't care re appearance I just want the best glass. Anyone know what's best? The DG guy says that Planitherm and K glass are the same price and he stresses how much better Planitherm is than K glass and that I'll regret getting K glass.
    Originally posted by gundo
    I am currently having trouble with the glass on a dining room window - see this thread:

    http://forums.moneysavingexpert.com/showthread.html?t=741801

    I am about to check with my window fitter if the glass I have IS Pilkington K but would advise you to try and find out as much as possible for both options you have before deciding.

    My fitter never mentioned this beforehand, otherwise I may have checked this forum and elsewhere earlier.

    HTH
    • thebaldwindowfitter
    • By thebaldwindowfitter 5th Aug 08, 8:05 PM
    • 1,294 Posts
    • 631 Thanks
    thebaldwindowfitter
    • #6
    • 5th Aug 08, 8:05 PM
    • #6
    • 5th Aug 08, 8:05 PM
    k glass actually has a green tint to it .planitherm has a blue tint(very faint)
  • McAzrael
    • #7
    • 5th Aug 08, 8:40 PM
    • #7
    • 5th Aug 08, 8:40 PM
    K-glass is clear too, are you thinking of Activ-Blue, which is as the name suggests blue. Activ blue is the self-cleaning, insulating glass you find in conservatory roofs, although pilkington now make a clear version now.
    Originally posted by littlesos
    I can assure you that K glass is not clear.
  • simcla
    • #8
    • 5th Aug 08, 10:56 PM
    • #8
    • 5th Aug 08, 10:56 PM
    Planitherm is a "softcoat", Pilkington 'K' is a "hardcoat". Softcoated glass is better at reducing heat loss, and generally offers less visual distortion than hardcoated glass. Pilkington 'K' is a "brand" in the UK where as Saint Gobain Planitherm isn't, but I would go with the Planitherm and I work for a company that installs windows. Pilkingtons make a softcoat glass, ask how much that would be in relation to Planitherm! The suppliers are not trying to pull a fast one!
    Last edited by simcla; 05-08-2008 at 11:01 PM.
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