Santo Tomas marble on shower: seal or waterproof or both?
I just bought a used house that has Santo Tomas marble on all floors, including the shower walls.
I would like to protect it but don't know a thing about this. So I turn to you, the experts.
My questions are:
1) Should I seal it or waterproof it? How often to reapply?
2) what is the difference between sealing and waterproofing?
3) Would it matter if some treatment was applied before? (I don't know if it was treated before but would assume so). The floor in the shower seems rougher than the walls.
4) what product would you recommend?
5) what about the rest of the marble in the house... What kind of protection should I use? How often should I reapply?
6) what about the marble in the kitchen?
The marble will likely require some maintenance from time to time. Not knowing what may have been used on the stone prior to your arrival may put you at a disadvantage.
The first thing I would do is to splash some clean water on the floor here and there and see what happens. Splash it in both the foot-traffic areas and in out of the way places also. If the water beads and stays on the surface the stone has been sealed. But with what?
In the shower the same thing. If the stone changes color and gets a little darker after the shower has been used it could probably use some sealer.
Sounds like you have a sizable investment in marble so I would stay away from the gimmick products and stay with a mainstream manufacturer. Here's a good place to start (not Amazon - DuPont). Talk to their techies also.