True quartzite can contain pores and natural fissures that allow oils and liquids to enter. A sealer slows absorption and provides more cleanup time. It does not make the stone completely stain-proof and does not prevent chemical reactions in slabs containing calcite. The fabricator should recommend a compatible sealer for the actual stone and finish.
Key considerations
- stain resistance
- moisture resistance
- appearance retention
- penetrating protection
- natural slab
- multiple finishes