I have an interlocking tiled floor in my bathroom - laid professionally about two years ago - and an excellent job.
I have now seen that water is managing to seep between sealant around pedestal and the floor.
I am going to reseal - but I wondered if there is a good matt waterproof "varnish" or similar which I could apply to the relevant tiles to stop further water ingress. Some would be on top surface so I would need something which was not really going to be visible.
Suggestions will be appreciated please.