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Patching render on 1930s bungalow - Advice needed.

Discussion in 'Plastering and Rendering' started by Bern240480, 24 Mar 2011.

  1. Bern240480

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    Hi all,

    I need to make some repairs to the render of the external walls of my 1930's bungalow.

    Repairs especially need to be made where double glazing was installed 3 years ago. I think the top coat is snowcrete(?) and the walls are concrete (with bits of flint and brick). I may be wrong about this though... so I need some advice on how to do this repair job including prep of the surface, what type of render to use... mix ratios etc. Does it make a difference if the walls have lime render or not? etc etc

    I've included some shots so you can see it:



     
  2. plstering

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    hi mate id hack off old render nd rerender it as its a small bitand if you try patching it youll see it all the time
    imm in kent too maidstone i can pop over if you want and advice you as too what too do
    as for snowcrete itd just white cement
    if your looking for a whitish render
    id use snowcrete /hydratedlime and plastering sand mix top
    coat
    and a nowcrete and plasterng sand with a dash of waterproofer scrach coat
     
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  3. Bern240480

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    Thanks for the speedy reply. What's the best way to remove the algae? Is it ok to pressure wash it off on a concrete wall... the wall won't absorb the water?

    So clean surface, wet surface, scratch coat, top coat?

    Next question: Can I then use masonry paint on it, or will that prevent it breathing?
     
  4. alastairreid

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    Yes it is fine to pressure wash.

    Dulux weathershield masonry paint is breathable.
     
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  5. Bern240480

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    Right, ok seems relatively straight forward. I'll have a crack at that then. Thanks guys.
     
  6. plstering

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    take pics as your doing it m8 and post them on here
     
  7. spc

    spc

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    has it been rendered on top of the rough casting? its hard to tell from the pics.

    Nice holly by the way :LOL:
     

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