Defining the inclination of a roof or the inclination of each of its sides

A roof is inclined when i > 8% (approx. 4.6º).

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Minimum recommended inclination

The choice of roof tile must take into account the roof inclination, the location of the building and the use intended for the roof’s garret.

In accordance with applicable legislation, Torreense defines the minimum inclination for each of its roof tile types, according to the location (climatic zone) and type of exposure to the elements.

Depending on the climatic zone, a building may be subjected to different types of exposure to the elements. The following pictures display the different types of exposure possible:

situacao-protegida Protected
Area fully surrounded by terrain elevations, protected from winds from all sides.


situacao-normal Normal
Flat area, or with slight sloping elevations.


Exposed
Coastal areas up to 5km from the sea, on a cliff side, islands or narrow peninsulas, estuaries or bays, mountain regions and plateaus. Applicable also to high-rise buildings, which, despite their location, are circumstantially exposed

. situacao-exposta-1 situacao-exposta-2


The minimum recommended inclinations for each roof tile type can be consulted on their respective section: Lusa, Marselha, Canudo and Milénio.

Any type of roof tile can be used on an inclined roof. However, if the maker’s specifications and instructions are not strictly followed, no liability can be imparted to them, should the roof tile not fulfil its function properly as a result thereof.

In cases where inclination is inferior to the recommended values, it is necessary to resort to supplementary insulation elements to guarantee the roof is properly watertight.