rendering 100mm turbo block on external wall.

Discussion in 'Builders' Talk' started by samtheman, Nov 9, 2009.

  1. samtheman

    samtheman New Member

    Can anyone please tell me the correct way to render a 100mm turbo block external wall.

    Its a wall of a garage so not worried about thermal values,just after the correct mix for this time or year.

    Any help would be appreciated.

    thanks sam
  2. ecm

    ecm New Member

    Scratch coat - 4:1:1 sand:cement:lime
    Float coat - 5:1:1 sand:cement:lime

    If you don't want to, don't use lime but use a bit of plasticiser/rendermix instead. Use a stainless steel render stop beads. Oh and don't bridge the DPC!
  3. nearnwales

    nearnwales Member

    no lime in the first coat !
  4. samtheman

    samtheman New Member

    thanks for the advice i wont be using lime,i was going to render to the floor so would be bridging the dpc,the first two courses are enginiering bricks on crazy paving,would this be ok.
  5. sinewave

    sinewave Screwfix Select

    the first two courses are enginiering bricks on crazy paving,would this be ok.

    That'll be 'engineering' then eh?

    It's quite common to paint the these two courses a contrasting colour like black for instance. ;)
  6. doing a bit

    doing a bit New Member

    3 courses of engineering brick will do as a dpc, nothing else reqd
  7. ecm

    ecm New Member

    Don't bridge the DPC - as I said before!
  8. building control

    building control New Member

    so if you are not bothered about thermal, why use turbo blocks?

    and is the thing really built off a crazy paving path? if so rendering is the least of your problems.

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