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Patching render on 1930s bungalow - Advice needed.


 
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Bern240480

from United Kingdom

Joined: 21 Apr 2008
Posts: 12
Location: Kent,
United Kingdom

PostPosted: Thu Mar 24, 2011 3:40 pm Reply with quote

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:





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plstering

from United Kingdom

Joined: 02 Oct 2010
Posts: 769
Location: United Kingdom
Thanked: 34 times

PostPosted: Thu Mar 24, 2011 7:21 pm Reply with quote

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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Bern240480 (25 Mar 2011)
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Bern240480

from United Kingdom

Joined: 21 Apr 2008
Posts: 12
Location: Kent,
United Kingdom

PostPosted: Thu Mar 24, 2011 7:45 pm Reply with quote

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?
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alastairreid

from United Kingdom

Joined: 21 Nov 2008
Posts: 4893
Location: Edinburgh,
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PostPosted: Thu Mar 24, 2011 8:25 pm Reply with quote

Yes it is fine to pressure wash.

Dulux weathershield masonry paint is breathable.
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Bern240480 (25 Mar 2011)
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Bern240480

from United Kingdom

Joined: 21 Apr 2008
Posts: 12
Location: Kent,
United Kingdom

PostPosted: Fri Mar 25, 2011 10:15 am Reply with quote

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

from United Kingdom

Joined: 02 Oct 2010
Posts: 769
Location: United Kingdom
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PostPosted: Fri Mar 25, 2011 11:57 am Reply with quote

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

from United Kingdom

Joined: 18 Jul 2010
Posts: 160
Location: Norfolk,
United Kingdom
Thanked: 9 times

PostPosted: Fri Apr 01, 2011 8:45 pm Reply with quote

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

Nice holly by the way icon_lol.gif
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