It depends. If your bathtub is made of porcelain or enamel, it should last for about 10 years with proper care. If it's made of acrylic, it should last for about 5 years. If it's made of fiberglass, it should last for about 3 years. And if it's made of cast iron, it should last for about 25 years.

It depends. A bathtub can last anywhere from 10 to 15 years, but it really depends on how well it's taken care of and the type of material it's made from.Acrylic tubs typically last longer than porcelain or fiberglass tubs, but they're also more expensive to replace. If you have a cast iron or steel tub, it could last up to 30 years, but again, this depends on how well it's taken care of. The most important thing is to make sure that you clean your bathtub regularly and don't let any hard water or soap scum build up.