Homeowners looking for moderately priced natural stone tile have hit the jackpot with slate. Available color combinations vary from jet black to greens and cross the spectrum to maroons and purple. Protecting the surface of the stone tile requires painting it with a sealant every four to five years. Penetrating sealant comes in varieties that offer a brilliant gloss or matte finish. Avoid products that simply coat the top surface as they will not last as long, or provide the same amount of protection.
Remove all items from the room that cover the slate floor. Sweep the floor with a broom.
Mix 1 cup of neutral stone cleaner with 2 gallons of warm water. Dip a mop in the solution and wring it out well. Wipe the entire floor with the cleaner. Allow two hours for the area to dry.
Mix a can of stone sealant well by shaking it vigorously. Open the can with a flat head screwdriver. Do this by prying gently under the lid. Pour a generous amount into a paint tray.
Use a paint roller to apply a thin, even layer of sealant on the floor. Complete coating the entire floor in small sections to relieve back strain. Let the product dry for a few hours.
Inspect the floor visually for any areas that may have been missed. Re-coat the area as necessary. Let the sealant dry for 24 hours before replacing any items or using the floor.