Re-glazing your tub is a far less expensive alternative than a complete replacement. Re-glazing not only saves you money, but time too. Re-glazing a tub usually takes less than a day. Meanwhile, a complete tub replacement takes little over a week. Buying a new tub is costly and you also have to figure in fees for the contractors, demolition, and the plumbers. Re-glazing avoids all that hassle while providing you with the same beautifully restored bathtub.