Types of Sealers
Topical sealers. Topical sealers act as a protective barrier that sits on top of the tile’s surface. They are cheap to apply and provide a layer of armor that absorbs most of the damage that would otherwise afflict your tile. Unfortunately, topical sealers are typically softer than the material they are protecting and will require consistent reapplication or buffing to mask scratches and scuffs.
Impregnating sealers. Impregnators, on the other hand, work beneath the tile’s surface, blocking its pores and making the tile much less absorbent. Most impregnators will not affect the appearance of the tile, and they usually last for several years before requiring reapplication.