Terraprime is an additive for prime coat emulsion that when formulated with CSS-1 or CSS-1H, improves penetration, surface coverage and setting. TerraPrime is an additive for Prime coat which we offer, possess excellent bond strength & imparts water resistance to the surface. One of the major functions of the prime coat emulsion is to bond the asphalt mixture to the surface of the base. TerraPrime added to the prime coat emulsion improves the spreading and the spray quality of the emulsion to give uniform spray and coverage. This additive for prime coat emulsion also makes the prime coat penetrative and waterproof.