Originally Posted by Bud Cline
So show us the documentation to support what you say.
I think you are misconstruing what I said. All I have said is that the manufacture of the product I mentioned recommends it for a particular use. The documentation to support what I said (i.e., that they recommend it) is in the link I provided.
Testing is expensive. Not tested doesn't mean won't work. Not tested doesn't mean inferior. All it means is no test has been performed. I'm pretty sure my computer was not tested by Dell to see if it would work on this forum, but that doesn't stop me from using it that way. Medical doctors prescribe drugs to patients in ways that have not been tested too (called "off label"). Sometimes bad things happen, but sometimes good things happen.
Just for fun I looked at the documentation for the tile I installed, and wood is listed as "not acceptable" for a substrate. Ditto for drywall. They don't mention plastic laminate. So if our OP is using the same kind of tile I have, then he must install concrete backer board (or a mortar bed), because that's the only method the manufacturer has tested and approved, right?
Either that, or he can do what many homeowners, and even some contractors have done, and use alternate methods. You suggested one yourself. I suggested two others.
If I have trouble with my tile backsplash, I'll let you know. If it fails, I suppose I'll need to cut out a section of my cabinet, replace it with Durock, and start over. But with a sheer strength of several hundred pounds/ square inch, I don't think I need to worry too much.