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Windows - Welded Joints

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  • 05-05-2005 12:05pm
    #1
    yop
    Moderators, Home & Garden Moderators, Regional Midwest Moderators, Regional West Moderators Posts: 16,722 Mod ✭✭✭✭


    Lads

    Anyone know much about PVC windows and the way the joints are done.
    I know welded is one, I think the other chemical joint?

    Anyway, any idea which is better.

    On a side note has anyone dealt with Dalgan windows in Mayo or Mahons Windows in Athlone?

    Cheers


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    #2
    KoNiT
    Registered Users Posts: 578 ✭✭✭KoNiT


    No but I got windows fitted by TJ Grady in Charlestown.

    Mine were a retro fit (teak windows before)

    He was the cheapest & fitment is quite good & lads were neat.


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    #3
    rooferPete
    Registered Users Posts: 1,497 ✭✭✭rooferPete


    Hi Yop,

    There is a world of a difference between Heat welded PVC and a solvent based product.

    The Heat does just what it says, it heats the two joints and bonds them together.

    The solvent is depending on the chemical reaction between the two pieces of PVC, if one side is setting too fast it does not form a joint.

    All the good manufacturers weld the joints, the diffence is a good joint is almost equal to one piece of PVC and the joints don't crack or break apart.

    The solvent is usually a shorter term job and will break apart very easily especially on the sashs / openings.


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    #4
    kadman
    Moderators, Home & Garden Moderators Posts: 5,069 Mod ✭✭✭✭kadman


    Hi Yop,

    Here is a good check list for pvc windows, that may give people some idea of what to look for in a good window fabrication.

    Welded joints on the transom are superior to ordinary self tapping screw joints. And steel reinforcing in the extrusions. That are not always installed in pvc windows, and should be above a certain size. And always in a conserveratory installation.


    http://www.thewindowman.co.uk/window_myspec.htm

    kadman


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    #5
    yop
    Moderators, Home & Garden Moderators, Regional Midwest Moderators, Regional West Moderators Posts: 16,722 Mod ✭✭✭✭yop


    Excellent men, thanks


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    #6
    yop
    Moderators, Home & Garden Moderators, Regional Midwest Moderators, Regional West Moderators Posts: 16,722 Mod ✭✭✭✭yop


    Is there a difference between a mechanical and welded joint?


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    #7
    kadman
    Moderators, Home & Garden Moderators Posts: 5,069 Mod ✭✭✭✭kadman


    Hi Yop,

    A mechanical joint , is a joint using self tapping screws into the end section of the reinforcing bar. This is normally used in lower quality windows, where the horizontal transom is held in by self tappers screwed through the left and right uprights of the window.

    A welded joint , is a joint that has been mitred and welded in a machine, that heats each side of the mitre, then holds them together under pressure, for about 30 seconds, until they cool.

    Welded transoms are a sign of good quality manufacture.

    kadman :)


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