SuperTubs, LLC Bathroom Remodeling Services in Hilton Head, SC Supertubs, LLC in Harrisburg, PA provides bathtub refinishing services as well as repair and refinishing services for tile, sinks, and countertops for homes in central Pennsylvania, northern Maryland, and western New Jersey. Their expert technicians can refinish your worn out tub, shower, or sink to restore its original look and save you the cost and hassle of replacing the fixtures.