- replacement bathtubs http://www.mobilefud.com/story.php?title=replacement-bathtubs Todays tubs are typically white with many variations and in many different shapes. Also the different kinds of tubs have different requirements for bath tubs replacement. Some tubs are made from a flexible plastic and need a bed of mortar to support the weight while others are made from metal with an enamel lining which requires no mortar, and stop cracking and warping. Thu, 18 Feb 2016 03:32:44 PST en