Scarifiers for concrete and asphalt surface preparation. Scarifiers leave a clean, textured or rough finish on any concrete or asphalt surface. The GrindLazers are the contractor choice for all-around scarifying jobs including parking lot lines, intersection markings, construction zones and sidewalk smoothing. With the optional LineDriver system its productivity is unmatched and means you can get more work done everyday without the fatigue from walking. Use Graco scarifiers for removal off and scarification of old unwanted traffic paints coatings parking lot lines, runways markings crosswalks smoothing of uneven surfaces.