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Redo solvent weld joint?

Discussion in 'Plumbing and Central Heating' started by datadiyer, 13 Jun 2020.

  1. datadiyer

    datadiyer

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    Hi,
    I have connected the break in the run already but found it coming loose. Can I sandpaper off all the glue and redo it as it is? Or would I have to do it the harder way?
    Many thanks in advance.
     

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  3. terryplumb

    terryplumb

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    Clean up pipe and inside fitting ,and remake the joint. When you say glue ,I assume you are not using glue ,but the correct stuff for the job!!
     
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  4. datadiyer

    datadiyer

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    Sorry, yes, proper solvent weld, gives me a right headache once I catch a whiff of it!!
     
  5. datadiyer

    datadiyer

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    Sorry, just to clarify, I can solvent weld in the same place on the pipe as long as I clean it up ok?
     
  6. bernardgreen

    bernardgreen

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    Is the pipe "solvent weld pipe" or "push fit pipe" ?

    Push fit pipe will not solvent weld.
     
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  7. datadiyer

    datadiyer

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    Yes, it's solvent weld, not push fit.
     
  8. terryplumb

    terryplumb

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    Yes ,with a liberal coating inside fitting and outside pipe
     
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  9. Madrab

    Madrab

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    Yup, a bit of 40/80grit and clean up the outside of the pipe and inside of the fitting and then re-solvent weld.

    Personally I only coat the outside of the pipe being inserted and not in the fitting itself to avoid a buildup of solvent being left inside the pipe.
     
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  11. Jackrae

    Jackrae

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    If you've already had a solvent weld joint, there is no way you should be able to get it to come apart. Solvent weld is exactly that - a WELD. If you can get it apart then either the materials are not correct (pipe, joint or 'glue') or the mating surfaces were seriously contaminated with something like silicon lubricant.
     
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  12. lostinthelight

    lostinthelight

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    Those crossing copper pipes look a bit close together or is it camera angle that makes it look that way
     
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  13. datadiyer

    datadiyer

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    It's the camera angle thankfully! It was this I was more concerned about (all strengthened now tho). The last pipework pic is my fault to be fair.
     

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  14. datadiyer

    datadiyer

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    I was moving the soil pipe into position which in turn moved the solvent weld joint. TBH, I don't think I let them set for long enough. I've learned my lesson tho.
     
  15. Madrab

    Madrab

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    Solvent weld sets in minutes, if not seconds, so I don't think it would be that.

    What solvent cement are you using? Are you using enough? Are the fittings loose or tight on the pipe?
     
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  16. datadiyer

    datadiyer

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    Thanks Madrab, im using Floplast solvent weld and it was the only joint that failed strangely enough. I made sure I also purchased all the same branded joints (floplast) and the fit was quite snug like the rest of the ones I did. When you ask 'did I use enough', admittedly solvent weld was difficult to paint on the underside of pipe, perhaps that's where I went wrong.
     
  17. Madrab

    Madrab

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    Possibly, may just be one of those things. When inserting the pipe into the fitting always try to make it so it can be twisted through one revolution, it makes sure the cement is distributed evenly or at least try and twist a bit to move the cement about a bit.
     
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