That valve can be repaired from the top without having to mess up your tile----
The cartridge can be pulled out and replaced---It's been a while since I serviced one of those---if someone else doesn't give you instructions---I'll wrack my brain and get you instructions----
The cartridge can be pulled out and replaced---It's been a while since I serviced one of those---if someone else doesn't give you instructions---I'll wrack my brain and get you instructions----