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Replies

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  Benedict Simmons January 29, 2014 at 12:28pm

  You would need to do something to seal the top of the wall, otherwise you would have problems with water saturation.
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  Ian Street January 29, 2014 at 1:09pm

  My rendered walls have no coping. All I would advise is, make sure the top beadings line up exactly, otherwise it will lead to a watermark at the join. I do not have any problems with water saturation.
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  Thermo January 29, 2014 at 1:39pm

  if youre going to do them, then a slight fall on the top across the top is a much to remove free standing water. personally I never think its a good idea as ice collects there and it always ends up getting so dirty. much prefer a coping
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  Simon Smith January 29, 2014 at 3:46pm

  as said they are a favourite with designers but practically you leave yourself open to lots of problems regarding maintenance and life expectancy
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  Colin Hunt January 29, 2014 at 4:32pm

  I agree Simon. A lick of paint every year is probably the answer.
  
  Simon Smith said:

  as said they are a favourite with designers but practically you leave yourself open to lots of problems regarding maintenance and life expectancy
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  Ian Hall January 29, 2014 at 4:58pm

  I would say but a coping on every time. The walls may look nice without but their is no protection from the weather.
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  Thermo January 29, 2014 at 6:51pm

  and the frost and ice does so enjoy somewhere to sit and cause problems!
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  Matt Johnson January 30, 2014 at 5:41pm

  Have anybody here used k rend? its a silicon based render and claims to be weather proof/waterproof. This may be an option, i haven't used it yet so not sure if said claims are true
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  Melissa Jolly January 30, 2014 at 6:14pm

  Thanks very much everyone, that's all really helpful. I think it sounds like it's worth recommending a coping stone and then if they still don''t want that I can warn them that the walls will require regular maintenance. I'll also read up a bit on K rend.
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  Tommy Newbold February 3, 2014 at 5:17pm

  I have used monocouche render system before which is a pigmented render that is applied heavily and then 'rubbed back'. the colour goes all the way through and its pretty good at keeping itself clean.

  worst thing was on a new development when new leadwork was installed above and not cleaned off with colvent, so the first heavy rain caused bad, dark streaking, but, it was a 10 second job to remove by very finely rubbing again.