PROBLEM TO BE SOLVED: To provide a weed-proofing and water-proofing reinforcement method using water-based paint for a paved road and a paved surface of a road bridge preventing deterioration of a paved surface at a road edge part, inflow of water into the pavement, and weed growth near a wheel guard or a curbstone, by a simple method especially using an aqueous coating material.SOLUTION: A weed-proofing and water-proofing reinforcement method using an aqueous coating material for a paved road and a paved surface of a road bridge includes: a first step in which a leveling agent is applied on a surface of a paved road or a paved surface of a road bridge having an arch-shaped transverse cross-section; and a second step in which a top coating material containing water-based paint is applied on the surface leveled by applying the leveling agent. The leveling agent applied in the first step is applied after forming a standing part on a vertical surface of a wheel guard or a curbstone, at an edge surface by the wheel guard or the curbstone. Furthermore, the top coating agent is applied to a portion higher above the standing part applied with the leveling agent.SELECTED DRAWING: Figure 1
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