Balcony elements may be watertight or water permeable. The first type is more common because usually there is a terrace or another balcony below the balcony.

The load-bearing elements of the balcony consist of pillars and beams, the choice of which depends on the width of the span and the architectural solution. Balconies are subject to strict requirements regarding load bearing capacity and sagging. Snow loads also need to be considered.

Balconies are always equipped with barriers. The choice of barriers is wide – wood, steel, stainless steel and their combinations with glass, metal grating or meshes.