The finish we apply to your tub is much harder than that of a bathtub liner or insert. Also, our finish is bonded directly to your tub, there are no air pockets such as is the case with a bathtub liner. Thus, no moisture can develop which in turn will lead to mold and mildew growing between the bathtub liner and your tub. This can cause a very annoying odor. Reglazing your tub is also much less expensive than having a bathtub liner installed.