Lise wrote:
[em]
[/em] Can I ask why? I thought you had to get a dry surface? Putting water in the tub would make the surface area wet, no?
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Good question! You totally want to keep your work area dry (the gap betwen the tub and the tile), but you also want to create some downward pressure by filling the tub (say 2/3 full) with water to mimic the condition under which you expect the caulk to perform- ie, you're having a bath. This will ensure the seal is adequate.
Don't worry, I'm no home handy expert. I've just made enough mistakes over the years. Plus, I listen to Shell Bussey in my sleep on weekend mornings when my radio goes on!