Do Slate Countertops Stain. Black slate that's left untreated can be used as a chalkboard. Liquids would have to remain on the surface a long time to stain.
The natural stone is nonporous, making it an excellent. Black slate that's left untreated can be used as a chalkboard. Slate Countertops are one of the best options that a countertops manufacturer can provide.
How to Remove Stone Countertop Stains: Make a paste of baking soda and water or talc mixed with a diluted solution of ammonia, bleach, or How to Remove Stains from Butcher-Block Countertops: Blot up as much of the stain as you can to prevent it from sinking into the pores of the wood.
Variegated slate tiles can hide a great deal of abuse, wear and stains, making them perfect for a low maintenance counter.
From my research there are several people who have done this successfully, slate is a real I don't know about using slate for a kitchen counter top but I certainly wouldn't want any epoxy near my food. There are many types of slates that need no sealing for preventing stains. Soapstone is also more resistant to staining and chipping than slate, though soapstone can also develop gouges or scratches over time.