I am on the board of directors for a new condo development that has a pool that has what we call the beach area. That simply means the entry to the pool is a very gradual slope. I would guess it is about 15 degree grade, 20 feet wide and extends into the pool 20 feet before leveling off and then stepping down. The pool is done entirely in vitreous (glass) tile and someone slips almost daily. It is only a matter of time until someone is seriously injuried.
We have explored coating the tile with a clear epoxy like material that contrains an abrasive material but either it fails when it is in chlorinated water or it yellows so badly it is unacceptable. I am going to take some samples this afternoon to be sandblasted but have my doubts that will work. Another suggesting is to wash it with muriatic acid which I will try as well but don't believe it will have an effect on the tile at all.
I have found tile with a rougher finish we could replace the existing tile with but the cost is prohibitive.
Any suggestions at this point would be greatly appreciated.