I recently bought some pond armor epoxy (http://www.homedepot.com/p/Pond-Armo...QT-R/203886503), and plan to use it to fix the leak at the skimmer throat.
The leaking spot is at the joint between the skimmer and the tile.
The surface looks very rough. Of course, I will try to clean it further, and use sandpaper to polish it.
I am wondering if I need to apply other materials (like grout or plaster) to make it even before applying epoxy?