Curtain walling is a lightweight structure made of aluminium, the glazing of which is placed from the outside and is maintained by glazing. This method of assembly allows alternating fixed panels with openings – French, tilt-turn, English, Italian – while preserving a uniform interior / exterior appearance.
Curtain walling is recognizable thanks to its checkerboard effect or frames. Its glazed panels are maintained by glazing beads on open or fixed aluminium profiles and separated by hollow joints. Each frame is independent and has its own waterproof barrier, air and wind. The filling elements are therefore not clamped against the supporting structure but mounted from the outside. The technical reference frame for the design of aluminium facades (DTU 33.1) requires an anti-removal system in order to avoid untimely dismantling of these fills.
In terms of energy performance, a double ventilated and concealed skin is the perfect complement of a curtain walling façade. It greatly improves the thermal balance of a building by reducing its heating consumption in winter and its need to cool in summer (buffer volume function). This benefit is achieved through the use of integrated ventilation systems or even venetian blinds placed between the inner wall and the outer wall of the glass facade. In terms of energy itself, the craze for curtain walling in London is amply justified.
The term “curtain walling” is understood to mean a curtain façade generously constituted by glazing. The glass fills are used either directly in the grid or in the windows placed in this grid (French window, tilt / turn, hidden opening, etc.). The integration is carried out according to three methods: by bonded, parted or attached glass.
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