Abstract: The present invention is directed to prefabricated construction panels, which allow for an improved roofing system and method for installation. In one embodiment, panels are provided with a weather resistant surface layer pre-bonded to the panel with tabs extending beyond the panel body suitable for overlapping adjacent panels in order to form a weather resistant roof. In a further embodiment, the panels are prefabricated from Oriented Strand Board (OSB) with tar coated paper bound to one side which extends beyond the edges of the panel body to form the tabs. These features and others allow for the quick and efficient assembly of a weather resistant roof that is cost effective and safer to construct.