Lead welding

  1. Evening All,
    I’m back to pick the brain cells of any one who has done any lead welding on roofing lead for chimneys/ valleys? What kit do you use/ what gases? Any tips on learning how to do it?
    Many thanks
    James
     
  2. addjunkie

    addjunkie Member

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    Leadmate!
     
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  3. eLuSiVeMiTe

    eLuSiVeMiTe Forum Supporter

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    @roofman maybe.

    Oa with a nozzle suited to lead I believe.

    Buy some flashing and filler and practice.
    Shape and weld around timbers and bricks on the deck until your happy.
     
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  4. eLuSiVeMiTe

    eLuSiVeMiTe Forum Supporter

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    For flashing into a wall maybe
     
    • image.jpg
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  5. roofman

    roofman Purveyor of fine English buckets and mops

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    These days i pick the phone up and sub my hot lead work out...easier and looks 1000 times better than my attempts :D
     
  6. eLuSiVeMiTe

    eLuSiVeMiTe Forum Supporter

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    My sentiments exactly.

    Unless I already have the gear to do a specialised job I reach for the phone.
     
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  7. It’s on mine/ my dads house, I’m an only child so need to get the reroof right he is a chippy by trade and has done roofs in the past but not lead burning. I would like to learn a new skill but not if I need acetylene I hate rental on bottles. Can you use o/p?
    James
     
  8. Fazerruss

    Fazerruss Member

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    You dont need OA for lead. The melting point is so low you can use a decent blow torch. As for filler just cut some stops of lead and scape off oxidation. Lead is lovely to weld bit like TIG
    I've done it with a little butane torch.
     
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  9. roofman

    roofman Purveyor of fine English buckets and mops

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    you make it sound so easy
     
  10. brightspark

    brightspark Member

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    you haven't got the versatility of a small oxy acet torch. using butane or propane you cant localise the heat . yes can be done but not very good
     
  11. Shox Dr

    Shox Dr Chief Engineer to Carlos Fandango

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    I’ve TIGed lead using strips as filler, puddle is very dirty regardless of how clean you get it.
    Found a turbo torch and a roll of solder faster with better results
     
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  12. Fazerruss

    Fazerruss Member

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    2,284
    West Yorkshire

    I never said I was good at it!

    I used a pencil style butane torch with a very narrow flame to join a piece of code 4 flashing. I found it very easy to manipulate and make the join disappear.

    Maybe I was lucky and it was a quality piece of lead.
    I saw it done on a documentary by an old guy. He paid particular attention to the join making sure the joining surfaces were scraped until shiney and same for the filler rods.
     
  13. 500e

    500e Always buy fire insurance a flood is hard to start

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    Only ever done it with OA but cleanliness was what I was told (like any soldering) + do it just before running the joint in, used a triangular paint scraper to clean surface & strips cut from the parent metal, when I did the surrounds for 20 large roof light surrounds, I used killed Nitric acid as a flux an old tin smith gave me a pint in a glass stoppered bottle (it is not nice stuff) but it made the lead job almost easy.
    I expect there is another less dangerous stuff to day.
    He showed me how to repair honeycomb rads as well, he build them from the component parts for veteran\vintage cars, he is long gone now wish I listened more.
    The lead was not a difficult to get a grip on as alloy TIG by a large factor
     
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  14. gordon stephenson

    gordon stephenson Forum Supporter

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    I sold a tiny torch quite recently, Fine flame required, (and quite a lot of skill) the correct term is 'Lead burning" When I worked on the steel works coke oven plant we had a full time lead burner, certain area's of the plant had all steelwork covered in lead, A real treat to see him work, Made it look so easy to do a lovely run, None of the dab dab dab that I have seen others use, Good luck.

    s-l640.jpg
     
  15. gaz1

    gaz1 Member

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    im staying quiet here :whistle:
     
  16. brightspark

    brightspark Member

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    I sold one on here to a member as I would never use it as I already have 4 oxy acet torches :)
     
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  17. eLuSiVeMiTe

    eLuSiVeMiTe Forum Supporter

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    ???
     
  18. gaz1

    gaz1 Member

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    lead pipe welding is just as hard get it too hot and it runs off and drips to the floor

    both old ways are kinda lost nowadays
     
  19. Seadog

    Seadog Forum Supporter

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    I'll bet there are a lot of moles out that that are thankful for that :D
     
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  20. julianf

    julianf Member

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    Get some lead scrap, a torch, and some leather, and give it a go.

    For small jobs you can even use a wad of damp tissue, but it heats up (ie the tissue) quickly, which is a pain.

    You need to control the heat so the lead is like a slush. Too hot and you'll just blow holes.

    I'm no pro, as I've not had to do much at all, but I reckon, if I wasn't in a rush, it wouldn't take long to get practiced.
     
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