Vinyl flooring is relatively durable and able to withstand spills and foot traffic. Still, the surface can become damaged and dirty even with regular cleaning. A sealer will protect the floors, and while spills should be cleaned up as soon as possible, a sealer also provides a buffer that will buy some time before a permanent stain occurs.
Clean the flooring with a mild neutral floor detergent. To remove stubborn stains or dirt, scrub the floor with a non-abrasive rag or pad. Allow the floor to dry.
Buy a sealer product. If possible, refer to the manufacturer of the flooring to find out which sealant is recommended. If you are unable to contact the manufacturer, use a high-quality acrylic floor sealer. Keep in mind that the sealer required for a standard gloss finish might be different than one for a high-gloss finish.
Dip a clean sponge or mop into the sealer. Never put the sealer directly onto the floor because this will promote uneven coverage and can result in sealer puddles. Apply one even and thin coat.
Allow the sealer to dry for at least 30 minutes before applying a second coat.