How long to let thinset dry in joints before Redgard?
You appear to have 3 threads going on this single tile project. It is best to keep all questions in one place so we can easily read the history of the project. In a few days some of the threads will disappear from view.
I'd allow overnight drying. Does it say anything on the label?
TILE GUY - retired- TROY, MI - Method & Product suitability consulting.