What surface preparation is required for durable asphalt emulsion coating performance?

Durable performance requires a clean, dry, sound surface. Preparation typically includes sweeping, removing oil spots with approved cleaners, repairing cracks and potholes, and ensuring no standing water. Vegetation and loose fines must be removed because they prevent adhesion. Some systems require a primer coat on dusty or porous substrates or after heavy oxidation. Timing matters: coating should be applied in suitable weather and allowed to cure fully before traffic. Poor prep is one of the main causes of early peeling, streaking, and uneven film thickness.