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My Blog

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Walls, rough cast render and pebble dash cleaning.

Posted on 15 April, 2013 at 13:28
Hi Folks,

Just a quick one on something that we are coming across a fair bit lately.

Wall Cleaning 

Walls, roughcast renders and pebble dash treatment. 

The extensive use of rough cast renders and pebble dash on walls has led to the development of appropriate cleaning techniques. 
Coloured renders or Monochouche as it’s also known was particularly popular during the most recent building boom here in Ireland.  
Although the new build industry has all but gone these types of plastering are appearing more and more as services such as External Insulation continue to grow. 
There’s nothing wrong with these wall coverings, done right they actually look really well and versus a traditionally plastered then painted wall I’d choose a coloured render all day long. 
Like all external surfaces though it’s only a matter of time before they become dull, discoloured and stained from growths such as red and green algae or lichen.  Trouble is, due to the granular type finish to render or the easily loosened pebbles on pebble dashing the very last thing you would want near these surfaces is PRESSURE WASHERS! 

 I recently done a roof repair for a girl whose house was finished in a bright yellow render, the place was immaculate, you could tell she spent many hours in the garden and cleaning her home. A little too much as it happened. I asked what happened to the gable wall where I noticed a section where there was streaks going in all sorts of directions. Putting her hand to her forehead she told me that after noticing a red colour appearing on the wall she decided to try and rinse it off with her little electric pressure washer, big mistake!   
 
Like our Roof Cleaning technique, our treatment of Moss, Algae and Lichen is soft and safe enough to use on any type of external surface without any risk of damage to the substrate, and without the use of PRESSURE WASHERS!
















Categories: Effects of moss growth.

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