I'm completely remodeling our master bath, and I have a quick question. In the shower, I'm putting up all new Durock concrete board and using self-adhesive fiberglass tape on the flat joints. My question is, how do I tape the inside corners? Can I use regular joint tape, or do I need to continue with the fiberglass tape? The paper tape is scored down the center and would be much easier to work with. Will it matter much since tile will be going up anyway?