dry time

I just finished building some kitchen cabinets. I sanded and primed with Benjamin Moore Fresh Start latex. Since I am spraying with HVLP, I had thinned by about 15% to get to a viscosity of about 20 seconds on a Ford #4 as recommended by the HVLP manufacturer. After spraying I waited just...

I am redoing my bathroom floor and have decide to use wonderboard as the backer board. When I set that into the subfloor with thinset and then screw it down every 6" or so. Meshing the joints and what not. Do I have to let the Thinset & Wonderboard base dry before I start placing tiles? Has...