Hi Chris
We're glad that you like the tiles.
Yes, you do need to seal the tiles. We provide an installation guide with orders for your tiler to follow.
Sample tiles are also available for all of our encaustic range - https://www.periodpropertystore.co.uk/flooring-c6/tile-c60/ca-pietra-cement-encaustic-salisbury-pattern-tile-p3427
The tiles are hardwearing, and are perfectly suited to hallways.
PPS
Period Property Store