本发明涉及建筑防水技术领域，且公开了逆作法抽真空防水保温隔热一体化屋面，包括两个女儿墙和屋面板，两个所述女儿墙之间一体成型有所述屋面板，所述女儿墙的顶部和侧面与所述屋面板上表面两侧一体成型有防水层；本发明中的可重复抽真空的保温、隔热、防水、排水一体板由于在工厂预制好，施工不受环境温度影响，施工速度快，大大缩短防水、保温层施工周期。由于密封防水层在施工前是流体无接缝逆作法施工，所以不存在接缝及保温层吸水问题，同时在压力作用下可以修复混凝土结构屋面的裂缝和缺陷密封漏水问题，由于采用逐层物理方法紧固和屋面紧紧形成一体，达到一次施工终身无忧的目的。

The invention relates to the technical field of building waterproofing, and discloses a waterproof heat-preservation heat-insulation integrated roof vacuumized through a reverse construction method. The waterproof heat-preservation heat-insulation integrated roof comprises two parapet walls and a roof panel, the roof panel is integrally formed between the two parapet walls, and waterproof layers are integrally formed on the tops and the side faces of the parapet walls and the two sides of the upper surfaces of the roof panel. According to the waterproof heat-preservation heat-insulation integrated roof vacuumized through the reverse construction method, due to the fact that a heat-preservation heat-insulation water prevention and drainage integrated plate capable of being vacuumized repeatedly is prefabricated in a factory, construction is not affected by the environment temperature, the construction speed is high, and the construction period of a water prevention and heat preservationlayer is greatly shortened; and due to the fact that a sealing waterproof layer is constructed through a fluid seamless reverse construction method before construction, the problem of water absorption of joints and the heat preservation layer does not exist, meanwhile, the problems of cracks and defect sealing water leakage of the concrete structure roof can be solved under the action of pressure, and the sealing waterproof layer is fastened through a layer-by-layer physical method to be tightly integrated with the roof, so that the purpose of one-time construction without worries is achieved.