System of provisional two-pitched roofs, application with aluminum beams and PVC cover sheets. The T74 Building roofs combined with the side shields on the scaffolding, are lightweight structures and suitable both for the protection of construction sites from atmospheric agents and for the protection of the surrounding environment from the processes that cause dispersion of material in the air. A protected construction site does not suffer delays protected from the weather. The aluminum covers are fixed on any type of multidirectional or prefabricated scaffolding existing on the market or on wall or tower structures with any lifting system.
