I have looked at the instructions, msd sheet and goggled. Not finding any info on this. As usual I am way overdoing my project. Putting in an ASB surround. Put in Hardibacker over studs due to mold issues in the bathroom from old home owners putting surround over drywall. Now in a moment of panic because of dealing with other mold issues in my old new home, I then applied RedGard to the walls. What glue would create a good adhesion for the surround over the RedGard? Any info would be much appreciated.