Stoic wrote:

Yep, my expertise? Done it and it worked.


In article , says...

Stoic wrote:


If it's going to be a wet-area application, like a shower, I wouldn't
recommend it. If it's a counter backsplash in a kitchen, regular tile
adhesive is the way to go. You can't use thin set on sheet rock.



Look folks! Another 'expert'..





You're clueless..
Wet areas such as showers require a water-resistant substrate. Be it
mortar or tile backer. Drywall is NOT an acceptable substrate in those
applications.

Also, thinset has been used as a setting agent for installing tile on
drywall since it's inception.