Existing roof repairing waterproof structure

The utility model aims to provide a waterproof structure for repairing an existing roof, which is characterized by comprising a colored sand layer, a first polymer waterproof layer, a first reinforcing layer, a second polymer waterproof layer, a first emulsified waterproof layer, a second reinforcing layer and a second emulsified waterproof layer, the first polymeric waterproof layer and the second polymeric waterproof layer are styrene butadiene rubber polymer asphalt self-adhesive layers, the first reinforcing layer is polyester filament non-woven fabric, the first emulsified waterproof layer and the second emulsified waterproof layer are emulsified asphalt layers, and the second reinforcing layer is polypropylene fiber non-woven fabric; the whole structure is simple, using is convenient, the skin type waterproof effect is achieved, waterproof durability is ensured, advantage complementation of coating and coiling combination is achieved, the service life of the coiled material is prolonged, the bonding cap