Layer-by-layer shrinkage specially-arc-shaped heat-preserving and waterproof roof

The utility model discloses a layer-by-layer shrinkage specially-arc-shaped heat-preserving and waterproof roof, belongs to the field of building roof engineering construction and aims to provide the layer-by-layer shrinkage specially-arc-shaped heat-preserving and waterproof roof which can meet heat-preserving and waterproof requirements for a roof and can have a shaping function of a specially-shaped building roof. The layer-by-layer shrinkage specially-arc-shaped heat-preserving and waterproof roof comprises a structural floor (1), a slope finding layer (2), a vapor barrier layer (3), a heat-preserving layer (4), a leveling layer (6), a waterproof layer (7), a protection layer (8), an external decorative keel (9) and an external decorative surface layer (10), wherein a heat-preserving layer keel (5) is arranged in the heat-preserving layer (4), is laid bi-directionally and is fixed with the structural floor (1) and the leveling layer (6) respectively; a heat-preserving material is rock wool.