VCT, or vinyl composite tile, is used in homes as a low-maintenance floor covering. It can be installed over other floor materials, laid by an amateur with ease, and cleaned with most household cleansers. This makes it an attractive option. VCT can scratch if it comes in contact with abrasives, and it can also fade when exposed to direct sunlight. For these reasons, VCT should always be sealed a few days or weeks after installation with a clear, acrylic floor polish.
Clean the VCT well, using a neutral-pH floor cleaner and a scrub brush. Many manufacturers cover their tiles in a temporary sealer to protect them during shipping and installation. This sealer must be removed, along with any dirt or debris that could interfere with the new sealer. Rinse the VCT and allow it to dry completely.
Apply an acrylic topcoat sealant to the VCT with a foam paintbrush. Dip the paintbrush in the acrylic to saturate it, and paint the tiles from front to back, covering them completely. Allow the acrylic to dry for the amount of time recommended by the manufacturer.
Apply two or more coats of the acrylic polish to the VCT. The more coats of sealant, the better and longer the protection for the tiles. Allow time between coats for the acrylic to dry thoroughly.