The concept of roof painting is not just based on the aesthetic value it provides. There is no wonder that a house looks way better if it is beautifully renovated and painted.
However, the protective layer that painting provides to the walls is wholly based upon facts and reasoning. As mentioned earlier, a roof that has been left unpainted would become damp and absorb water when it rains.
As a result, the wet nature of the walls would allow the growth of algae and other microbes. This could adversely impact the strength of your home and could even result in an unfortunate event.
So, it is highly recommended that house owners take roof painting seriously and have it done at regular intervals of time.