Cleaning Slate Tiles can present some difficult challenges due to the many varieties of slate and the fact that Slate Tiles are often sealed with topical water or solvent based sealing products.
It is important to test the slate surface before any cleaning procedure takes place. It is important to understand what type of sealers were used on the slate before any cleaning process can take place.
There are may types of slate tiles originating from many places around the world and the slate tile cleaning process can vary depending on the type of slate tile being cleaned. Before cleaning slate you should test the slate surface to be sure that the cleaning product will not damage or discolor the slate surface. Alkaline cleaning products are generally safe for cleaning slate but cleaning slate with acidic based cleaning products could potentially damage the slate tile surface.