Improper Installation of Steel Composite Tub
I couldn't get a definitive answer on the Structalite question so we insisted on mortar, instead, since I know that is what is normally used. Structalite might work, but I worried about it's lasting properties. It dries hard, but does it crack or crumble after being stood on day in, day out? Also, how does it react to moisture or condensation? These questions being unanswered made me think mortar was a safer bet. Only after it sets will we know if it solved our squeaking tub problem.