Since quarry tiles are made from dense clay, their absorption rate is quite low, meaning that it's not compulsory to seal them. However, if you're using them in high traffic areas like in a kitchen or hallway, where staining is more likely, you could seal with LTP Mattstone Sealer.

Do I need to seal quarry tiles?

Although it's sometimes advised that quarry tile should always be sealed, this is not necessarily true. ... So, for normal wear, sealing is not required for this type of tile, but for abnormal wear, such as high traffic, oil, and grease, you may want to seal the tile. If so, you should use a water-based penetrating sealer.

How do you clean and seal quarry tiles?

Vacuum your quarry floor until all debris has been picked up. Mop your floor thoroughly with a powerful floor cleaning solution. Rinse your mopped floor using soft water. Wipe your floor clean and dry using paper towels.