Metal multilayer board waterproof sealing strip for buildings

The utility model discloses a metal multilayer board waterproof sealing strip for buildings. The metal multilayer board waterproof sealing strip comprises a body and an outer cover, wherein the body is of an inverted F-shaped structure; the upper end of the body is a flush surface; an opening is formed in the lower end of the body; a combined segment consisting of a plurality of spaced concave-convex grooves is arranged on the inner-side vertical surface of the body; a hook pipe is formed on the outer side of the body; the outer cover is L-shaped; a combined segment consisting of a plurality of spaced concave-convex grooves is arranged close to the lower side of the vertical surface; an embedding strip is arranged close to the outer side corresponding to the hook pipe of the body. The metal multilayer board waterproof sealing strip is applied to side blocking engineering of wall surface windows; the clamping of the hook pipe and the embedding strip is added during construction, so that the combination stability of the hook pipe and the embedding strip is enhanced, and the situation of separation of the outer cover from the body is avoided; lastly, all construction steps can be finished by directly plugging the waterproof sealing strip into an opening in the outer side of a horizontal plane and plugging the waterproof sealing strip into a gap in the upper side of a window frame, so that construction is simplified, the construction time can be effectively shortened, the construction cost is reduced, and the surface attractiveness can be maintained.