All buildings face challenges on their roofs with the outflow of water. In the case of roofs, the “key to success” is the correct slopes. The problems that arise from stagnant water are diverse and multidimensional if not addressed.

Some indicative problems of poor/inadequate roof slopes both internally and externally of the building are:

• Moisture inside the building from leaks
• Appearance of mold inside and algae outside
• Degradation of structural capacity
• Corrosion of reinforcing steel
• Aging of concrete from continuous and abrupt cycles of cooling-heating
• Reduced or extensive lack of thermal insulation
• Increased cost for cooling in summer and heating in winter
• Increased maintenance costs

All of the above lead to unpleasant and unhealthy living conditions within buildings.