This article provides a step-by-step guide to the steps a cleaning contractor will take when polishing a floor. Read on to discover more! Preparation Before polishing a floor, the contractor will ensure it is thoroughly swept and cleaned. Contractors will also need to move all furniture to the centre of the room or remove it entirely. Finally, the contractor will test their machines on an inconspicuous area of flooring to ensure there are no adverse effects on the tile or grout before moving forward.