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Internal plastering - scud coat or not

  • 30-10-2010 11:44pm
    #1
    Registered Users, Registered Users 2 Posts: 24


    Just about to start the internal plasterwork. My plasterer is telling me that a sand and cement scratch coat and top skim coat are all that is required. Is an initial scud coat required or is that just used on the external walls?


Comments

  • Registered Users, Registered Users 2 Posts: 14,547 ✭✭✭✭Poor Uncle Tom


    A scud coat is used to provide a key between the blockwork and the plaster/render coat. So, it is wise to use it wherever there is a blockwork wall needing a plaster or render finish in case the blockwork is not rough enough on its own to take a heavy coat.


  • Banned (with Prison Access) Posts: 15,857 ✭✭✭✭paddy147


    A scud coat is used to provide a key between the blockwork and the plaster/render coat. So, it is wise to use it wherever there is a blockwork wall needing a plaster or render finish in case the blockwork is not rough enough on its own to take a heavy coat.


    Can I ask you,for some advice please?

    I had my fireplace replastered recently.The plasterer used a scatch coat on the bare brick,and then a top plaster coat applied.But the plasterer will not come back to re do it,just keeps on giving me silly excuse afer silly excuse.:mad:

    I havent used my fireplace yet,but the plaster is cracked to bits,long cracks all over the front and sides of the fireplace.

    A different builder told me the best solution is to scrape off all the plaster and re do it from scatch.

    But he says that a large sheet of plastering mesh put up on the chimney breast wall will prevent any cracking in the future.

    Does this sound right,as I didnt know that there was such a think as plastering mesh sheets??

    Thanks.


  • Registered Users, Registered Users 2 Posts: 14,547 ✭✭✭✭Poor Uncle Tom


    paddy147 wrote: »
    Can I ask you,for some advice please?

    I had my fireplace replastered recently.The plasterer used a scatch coat on the bare brick,and then a top plaster coat applied.But the plasterer will not come back to re do it,just keeps on giving me silly excuse afer silly excuse.:mad:

    I havent used my fireplace yet,but the plaster is cracked to bits,long cracks all over the front and sides of the fireplace.

    A different builder told me the best solution is to scrape off all the plaster and re do it from scatch.

    But he says that a large sheet of plastering mesh put up on the chimney breast wall will prevent any cracking in the future.

    Does this sound right,as I didnt know that there was such a think as plastering mesh sheets??

    Thanks.
    From what you describe I agree with the builder about using the mesh for your fireplace wallPlaster_lath021-DJFs.jpg
    It will actually help prevent cracking where you will have temprature varients.


  • Banned (with Prison Access) Posts: 15,857 ✭✭✭✭paddy147


    From what you describe I agree with the builder about using the mesh for your fireplace wallPlaster_lath021-DJFs.jpg
    It will actually help prevent cracking where you will have temprature varients.


    Thankyou,good to know that the builder is talking sense to me,as after the hassle I had with the last builder and plaster,er I was a tad wary of what I was being told this time around.

    Thanks again.:)


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