Strip-Serts: used to remove heavy buildups of paint, mastic, rubber, resins, tar, fiberglass, ice with out damaging concrete. . Double Concrete Grinder rents for $80 for 4hrs/ $120 a day. Single Concrete Grinder rents for $58 for 4hrs/ $84 a day. Dyma Serts Set of Three rents for $50 for 4hrs/ $70 a day.