Unreeling device for waterproof roll construction

The utility model relates to the technical field of waterproof roll construction, in particular to an unwinding device for waterproof roll construction. Comprising a top plate, and two sets of supporting plates are symmetrically arranged on the two side edges of the top of the top plate; the opposite side walls of the tops of the two sets of supporting plates are each provided with a set of limiting grooves. An unwinding roller is arranged between the two groups of supporting plates; an electric push rod is arranged at the bottom of the top plate; the output end of the electric push rod is in transmission connection with a pressing mechanism. The surface of the waterproof coiled material is firstly cleaned through the cleaning brush of the pressing mechanism, then the waterproof coiled material is pressed on the roof through the multiple sets of pressing rollers, and due to the fact that the cleaning brush and the multiple sets of pressing rollers are arranged in the V shape, dust and impurities can be discha