we recently remodeled our bathroom. We put up wainscoating put in a pedestal sink and a victorian style toilet. the only fixture that we didn't change was the bathtub. after everything else was done we realized that we should have changed that too. In comparison the bathtub looks old and grungy, no nicks or chips, but the glaze looks worn and there is slight discoloration around the drain. So does glazing help, how long should it last and is there anyway to check references on a glazing company? thanks, Patti