Microsurfacing is a preventative maintenance method developed from slurry seal. It uses a microsurfacing paver to mix graded aggregate, fillers (cement, lime, fly ash, stone dust), polymer-modified emulsified asphalt, admixtures, and water in a defined ratio to create a flowable mixture. The mixture is then evenly applied to the pavement, creating a thin, highly skid-resistant, and durable layer that can be quickly opened to traffic.

Microsurfacing is widely used in the highway industry to repair pavements with a largely intact base layer but some surface damage (such as minor rutting, oil spillage, and surface aging). It can quickly address surface defects, improve road performance, and effectively extend the life of the road.