Hi, I am new to this site so apologies if there is already a link available. 

The problem is re the rendering on the inside fascia of our balcony.  Tt is coming off in large sections and we would like to repair it ourselves if possible.  We are not afraid of DIY and are prepared to buy the necessary tools.  The ceiling of the balcony below us has been damaged by the water penetration and although we have been told to contact our insurers, I can’t see the insurers doing the repair work on our balcony.  However, perhaps they will cover the cost for the repair to the damage caused below.  It is essential that we waterproof it.  On the UK market there are products available so there must be something similar in Spain.  This is the link   http://www.thompsonsweatherproofing.co.uk/products/product.jsp?id=1

Our balcony ceiling has also been affected by the same from above us.

We are in Torrequebrada, Benalamadena Costa.