Actually flat roof has long been known, especially in countries of sub tropical climate with low rainfall. Trends create a flat roof more and more used here as the availability of technologies that facilitate the concrete roof-making process of this type. On the roof of the school of architecture design is made roof drain, so that rainwater can be channeled directly into the vertical pipe. As for preventing the risk of further leaks, the roof is usually a water-resistant paint coating (waterproof).
