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Lime Mortar ?

  • 14-10-2009 1:26pm
    #1
    flynnboy
    Registered Users, Registered Users 2 Posts: 358 ✭✭


    Hi

    Can anyone tell me how to mix a lime mortar for re-pointing the old stone wall of an out building ? I have some powdered hydrated lime and I don't know if I can simply mix this with sand, sand/cement or if I have to make a lime putty from it before I mix it with the sand ???

    Thanks

    FB


Comments

  • #2
    ART6
    Registered Users, Registered Users 2 Posts: 2,632 ✭✭✭ART6


    flynnboy wrote: »
    Hi

    Can anyone tell me how to mix a lime mortar for re-pointing the old stone wall of an out building ? I have some powdered hydrated lime and I don't know if I can simply mix this with sand, sand/cement or if I have to make a lime putty from it before I mix it with the sand ???

    Thanks

    FB

    Google.ie "Lime Mortar". There's a wealth of info there.;)


  • #3
    RKQ
    Registered Users, Registered Users 2 Posts: 2,292 ✭✭✭RKQ


    Do not mix cement with lime!
    The idea with lime is to mix sand and water slowly & completely.
    There is an Expert in Tullow! PM sent.

    Never use cement in an old stone wall - lime moves & breaths, cement doesn't


  • #4
    yekim
    Closed Accounts Posts: 13 ✭yekim


    for RQK

    I have an old stone house that i plan to renovate too and i want to raise the entire exterior wall and gable ends up by 2-3 feet, my questions are:
    can this be done safely with a lime based concrete and could this be supplied by usual suppliers or would it have to be mixed on site.
    If you have any thoughts or answers, post a reply or contact details for the guy in Tullow.

    Thanks


  • #5
    RKQ
    Registered Users, Registered Users 2 Posts: 2,292 ✭✭✭RKQ


    PM sent.
    Raising the roof level will require planning permission. A professional can advise on this work.


  • #6
    jwshooter
    Closed Accounts Posts: 4,612 ✭✭✭jwshooter


    lime mortar will draw moisture in ,has little no strength compared to Portland and lads take a lot shxt about stone breathing .

    if you have a problem wall with loose stone drawing the damp in ,i would use white cement ,sand ,waterproofer in the mix.


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  • #7
    oleary.k1
    Closed Accounts Posts: 3 ✭oleary.k1


    flynnboy wrote: »
    Hi

    Can anyone tell me how to mix a lime mortar for re-pointing the old stone wall of an out building ? I have some powdered hydrated lime and I don't know if I can simply mix this with sand, sand/cement or if I have to make a lime putty from it before I mix it with the sand ???

    Thanks

    FB

    You need to use a hydraulic lime for the re pointing of an old wall, The traditional Lime Company will give you the info you need. The hydrated Lime you get in a builders providers is useless for what you need. Dont use cement on the wall as this will damage the wall over time.


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