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how to stop iron girder leaching rust

  • 16-08-2011 8:03pm
    #1
    baldric
    Registered Users, Registered Users 2 Posts: 71 ✭✭


    HI

    I have iron girders at openings form the interior to exterior in my house ( i Know..... i was told I didnt have a choice cos of spans etc etc, but anyway they are there now !!). ANyway they are sitting on heavy duty strengthened concrete ( all engineer specified inspected etc) .I have made provision for external cladding and internal insulation stepped back from the internal wall, both with a view to avoiding any form of rust leaching (inside or out) or damp or cold bridging ( inside!) from the steel and concrete pads.

    I have made provision for enlarged window frames to accommodate the additional area taken up by the various claddings.

    Anyway before doing any internal or external insulation or cladding I am boxing in the actual girders and infilling with insulation in all areas.

    I have a couple of questions

    1.want to have belt and braces on the issue of damp and leaching of rust so prior to putting on the internal and external finishes I wanted to wrap the boxing (heavy ply) and surround the concrete pads with something like dpc...but I am concerned the dpc may sweat and cause more moisture than I was worried about in the first place.....any ideas?

    2. has anyone fixed any of that e-board type external cladding and is there any skill to it which my plasterer might not be aware of as he hasnt done it before? Or is it pretty straightforward

    Thanks


    Baldric
    Tagged:


Comments

  • #2
    BryanF
    Moderators, Home & Garden Moderators Posts: 10,146 Mod ✭✭✭✭BryanF


    any chance of a picture?
    what is your architect recommending?


  • #3
    Mellor
    Registered Users, Registered Users 2 Posts: 39,902 ✭✭✭✭Mellor


    They are most likely steel not iron. Just FYI.
    You can paint them to reduce the effects of moisture. The opening should be detailed properly with a DPC to keep moisture, this applies to all windows and not just when there is steel over.


  • #4
    Quazzie
    Registered Users, Registered Users 2 Posts: 29,312 ✭✭✭✭Quazzie


    The best idea would be to have it galvanised first, but as Mellor states a generous coating of Hammerite or similar paint would be your best bet at this stage.


  • #5
    baldric
    Registered Users, Registered Users 2 Posts: 71 ✭✭baldric


    yeah lads thanks for that.... the metal guy said the same...grind off the existing rust, paint it ...box it then seal the joints and keep my fingers crossed.....!! thanks for your help

    by the way as for my second question..anyone applied any of that eboard (external cladding/insulation) and if so how did you get on?

    Baldric


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