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How long does lime last?

Discussion in 'DIY Plastering - Plastering Help - DIY Plastering ' started by NewToLime, May 15, 2017.

  1. NewToLime

    NewToLime New Member


    Am a complete novice.

    Am looking to doing some repointing with NHL 3.5.

    Have purchased some Singleton Birch, 25kg bag.

    On the bag it states that once opened the lime should be used in 2 days.

    As a diy-er I'm never going to use that amount in 2 days.

    I have wrapped up the open bag in plastic bag so it doesn't get wet.

    Is it ok to keep the lime like this? And how long can I keep it like this for?

    How would I know if the lime had a problem? Would it degrade or start solidifying?

    Any advice gladly received, thanks in advance.
  2. algeeman

    algeeman Private Member

    had to read that twice thought you asked......how long does time last.
    • Funny Funny x 1
  3. smoother09

    smoother09 Private Member

    That's what I thought lol. Was gonna say as long as Kim Jon yung keeps his finger off the missile button!!
    • Agree Agree x 1
    • Funny Funny x 1
  4. flynnyman

    flynnyman Private Member

    It goes all lumpy but you can crush it back up
    • Like Like x 1
  5. Danny

    Danny TPF OWNER

    I have not really ever worked with lime but my understanding is that it never really goes off... pleas eosmeone correct me if I am wrong (often am) @malc @flynnyman
  6. flynnyman

    flynnyman Private Member

    It doesn't set hard and can be crushed and used again so I believe.
    • Like Like x 1
  7. Danny

    Danny TPF OWNER

    ok thats what I thought :D
  8. raggles

    raggles Private Member

    As said it should be OK but when you are raking out the joints keep some of the old mortar crush it and put a bit in each mix you do. This will help the new gear blend in better and also act as a pozzolan which will help it cure.
    • Like Like x 1
  9. Danny

    Danny TPF OWNER

    nice idea that

    a few years ago I was watching some plasterers lime render a house and it was stunning it looked so good when completed (think I posted a pic here in the past) then a weeek later the roads flooded and it is now screwed and looks terrible
  10. raggles

    raggles Private Member

    It was a 80 year old stone mason who told me to do it years ago and it also helps if you can get sand that is sourced as locally to the property as possible.
    • Like Like x 2
  11. Danny

    Danny TPF OWNER

    That sort of stuff is what I like... using old to make new look old and in place...

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