Date: 4/8/2008 11:28 pm EDT
I may not be following your exact application, but I will comment on a couple of points. First, Avaire tile is probably not a good choice for a vertical surface above a tub. We've done a few vertical applications as toe kicks under cabinets and it performs fine there. A color matched caulk is probably a better solution at a 90 degree corner. If you could send pictures we might be able to address your questions more precisely. Also, I suggest you call our technical advisor, Joe Fuller at 402-505-7627 - he might have some additional ideas.
Thanks for considering Avaire tile!