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Internal plaster mix

  • 05-07-2019 9:54pm
    #1
    robclay26
    Registered Users, Registered Users 2 Posts: 563 ✭✭✭


    Father in law wants to plaster the block work on the inside of the house.

    Does anybody mix is used on internal blockwork? I know external is the corse plastering sand, cement and plasticiser

    Back in his county they use lime based plaster.

    Thanks


Comments

  • #2
    policarp
    Registered Users, Registered Users 2 Posts: 3,667 ✭✭✭policarp


    Depends what you want to do.
    Is this a new build?
    If it is insulation is more important than traditional practice.
    If not he's right.


  • #3
    listermint
    Registered Users, Registered Users 2 Posts: 34,216 ✭✭✭✭listermint


    robclay26 wrote: »
    Father in law wants to plaster the block work on the inside of the house.

    Does anybody mix is used on internal blockwork? I know external is the corse plastering sand, cement and plasticiser

    Back in his county they use lime based plaster.

    Thanks


    Why does he want to do that specifically?


  • #4
    Still waters
    Registered Users, Registered Users 2 Posts: 1,166 ✭✭✭Still waters


    robclay26 wrote: »
    Father in law wants to plaster the block work on the inside of the house.

    Does anybody mix is used on internal blockwork? I know external is the corse plastering sand, cement and plasticiser

    Back in his county they use lime based plaster.

    Thanks

    Its not a job for a diyer is my advice

    Just use normal plastering sand

    But, internal mix is good enough at 4 or 5/1 sand/cement mix

    I wouldnt bother using lime on internal plastering


  • #5
    robclay26
    Registered Users, Registered Users 2 Posts: 563 ✭✭✭robclay26


    It’s just to smooth off some new blockwork before we put up insulated plaster boards, but of patch work really.

    So 4 or 5 / mix and add plasticiser too?


  • #6
    Still waters
    Registered Users, Registered Users 2 Posts: 1,166 ✭✭✭Still waters


    Yea, add some plas to make it workable, make sure to dampen down the blocks as well just before plastering, it'll give a better key


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  • #7
    robclay26
    Registered Users, Registered Users 2 Posts: 563 ✭✭✭robclay26


    Thanks everyone for your help and advice! He knows the craic now ðŸ‘


  • #8
    antiskeptic
    Registered Users, Registered Users 2 Posts: 9,555 ✭✭✭antiskeptic


    robclay26 wrote: »
    Father in law wants to plaster the block work on the inside of the house.

    Does anybody mix is used on internal blockwork? I know external is the corse plastering sand, cement and plasticiser

    Back in his county they use lime based plaster.

    Thanks

    The bare blockwork in my last house's extension was just skimmed - the rough block providing a good key for the skim. 20 years later it's still fine: no cracks or anything


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