Stick system

Stick cladding systems comprise a series of vertical members (mullions) and horizontal members (transoms) that form a grid. This grid is used to restrain either solid panels or glass using rubber gaskets, and is normally fixed to the floor edges by specially designed brackets, which provide wind restraint (refer strongback description for definitions). The self-weight of the curtain wall is normally taken to the ground through the mullions.

Stick systems are amongst the lightest forms of cladding (typically 50 kg/m2). Mullion spacings are normally in the range 1.2 – 2 m, although wider spacings are possible. Transom spacings are normally determined by panel requirements and the architectural treatment of the façade.

Stick systems can be ‘unitised’ whereby horizontal and vertical members are prefabricated into units, which are craned onto the façade. Special edge members have been developed for these systems.