Support element made either with small elements or amorphous material and fulfilling water tightness due to the thickness and relative water tightness of the supporting element (generally exposed brickwork or concrete); or through the addition of an absolutely watertight finishing, normally a thin layer of material (rendering).
Support element formed by a post and rail structure that achieves water tightness from the characteristics of the cladding material and the sealing of its joints by means of the mechanisms incorporated in the profiles of the post and rail structure (stick system).
Support element formed by lineal semi-finished products –traditionally logs-stacked in horizontal position and fulfilling water tightness due to the thickness and relative water tightness of the material.