Durock - Hardi - Wonderboard - Kerdi
Confused. So many options. I was set with a contractor to have a bathtub done using Durock with a poly membrane underneath. Then I did some internet reading and found too much information. Is one system better than the other? I read Kerdi is good, but expensive. Expensive is a turn off being the conventional ways have been working fine for years. Is Kerdi necessary? Is Hardi board better than Wonderboard or Durock?