the recent change in the weather has prompted , yet again the lady wife, to "request" that redecorate the exterior of our house. However over the years since the rendering last saw a brush, there has been some deterioration, which I feel needs attention prior to this work commencing. Some not all of the rendering is showing signs of is it mould? or weathering. (see photographs. This I feel needs treating. So with what? and what is the best exterior paint from the many that will save me from this task for a while, something called pliolite masonry paint has been suggested ? Advice please on both points very welcome cordially chaffeur