Determining the slope of the roof depending on your location


The geography and climate are the determinants for the design and implementation of the roof. To ensure good performance of the cover, the designer has to take into account, in addition to existing legislation, both indoor and outdoor conditions in location, reflecting on the project with a detailed calculation of the roof, with all its elements and arrangement thereof.

Given the altitude, the force of the prevailing winds, the rain rates and frequency of storms, your country can be divided into three climatic zones. Besides these three areas, we should consider the weather effects that may result from the local situation of each of them, being able to differentiate in each area three types of situations:

  • Protected Situation: Hollow surrounded by hills that protect it from the prevailing winds or stronger winds.
  • Normal Situation: Plain or plateau with minor unevenness
  • Exposed Situation: Heavily stricken areas by wind, coast up to 5 km from the coast, islands and narrow peninsulas, estuaries or bays boxed, narrow valleys, isolated mountains and mountain passes.

Depending on the Climate Zone and place for the deck, plus the type or model of tile to place, the cover shall have a minimum slope indicated in the UNE 136020 for ceramic tiles and UNE 127100 for concrete tiles and the overlap minimum required for each roof eventually.