Painted smooth render becomes powdery and friable with age and quite naturally absorbent to wind driven rain. Expansion and contraction caused by extreme weather conditions during the dry summer months followed by a predominately damp winter can cause hairline cracks to appear. Left unattended they then become full blown fissures giving an ingress of water to the brick or block substrate beneath, the external render is now in danger of de-laminating.
Complete re-rendering is expensive and will turn your home into a building site and ultimately leaving you with a wall painting problem which will do nothing other than provide you with an occupational therapy programme for many years to come.
Alternatively you could invest in total preservation of your most valuable asset. Treatexwall resin bonded decorative and protective exterior waterproof coatings have been specified for masonry type walling subject to harsh climatic conditions throughout the UK over a period of thirty-five years with guaranteed proof of performance. Available in a range of heritage pastel shades and brilliant white