Abstract: A method includes obtaining a first roll of a first sheet comprising thermoplastic polyolefin and having a width of at least 60 inches; obtaining a second roll of a second sheet comprising thermoplastic polyolefin and having a width of at least 60 inches; heating at least a portion of a width of the first sheet with hot air from a hot air knife to form a heated first sheet; and compressing the heated first sheet and the second sheet between two rollers, to form a laminated roofing membrane, where the heated first sheet and the second sheet directly contact one another without a scrim layer disposed between the heated first sheet and the second sheet.

Abstract: A system includes a plurality of photovoltaic modules configured to be installed on a roof deck and a plurality of roofing shingles. Each of roofing shingles includes a cap layer composed of a first polymer material, and a core layer underneath the cap layer. The core layer includes a first layer composed of a continuous fiber thermoplastic composite tape (CFT), a second layer composed of a continuous fiber thermoplastic composite tape (CFT), and a third layer between the first layer and the second layer. The third layer is composed of a second polymer material.