We have recently bought a property in South East Spain. We are about to repaint the exteria. We have started to prepare the garden walls and found that some of the 'pebbledash' type plastering has fallen way from the wall exposing grey plaster and red bricks underneth. The wall is 16ft long and 3ft high. We have two patches, both about 20inches wide and 1 foot long. How do we go about repairing it before painting the whole wall?
Thank you for your help.