Fabricated roof construction method

The invention relates to a fabricated roof construction method. The fabricated roof construction method comprises the steps of S1, structure slope forming construction, wherein a roof is subjected tostructure slope forming and press polish completing according to a deepening design drawing; S2, roof waterproof construction, wherein a waterproof roll is directly constructed on a roof structure board, and adhesion is realized; S3, heat insulation integrated board installation, wherein a heat insulation integrated board is provided with stay cords, tightly laid, flattened and stably padded, andinsulation boards are combined and bonded through bitumen mastic; S4, roof PC gutter construction, wherein paying off and laying of PC gutters are conducted, and the positions of the gutters are determined according to the quantity and position of drain gullies and layout of the roof slope; S5, flashing construction, wherein shaped apron flashings are made by adopting hot galvanized sheet iron andfixed through expansion pi